DE10030868A1 - Method, computer program product, computer system, network server and network client for generating a representation of an object with interactive surfaces in a variable view - Google Patents

Abstract

The invention relates to a method for generating, with variable view, a representation of an object (100-160, 100`) with interactive areas (1000, 1000`) for a computer system (200-280). The invention also relates to a computer system (200-280), a computer program product, a network server (260) and to a network client (260) for implementing such a method. To this end, a browser (300) for a computer system (200-280) is used. In addition, a number of two-dimensional images (400, 402, 404), which each represent the object (100-160, 100`) with variable view and which are represented in a browser window, are used for the variable representation of the object (100-160, 100`). A model area (1010, 1010`) is used for the interactive area (1000, 1000`) to be generated, and the position and/or spatial location of said model area in the reference system (X, Y, Z) can vary. At least one projection of the model area (1010, 1010`) on an image (400, 402) is calculated and is used for defining the interactive area (1000, 1000`) in the representation of the image (402`) in the browser window.

Description

The invention relates to a method for producing a dar position of an object with interactive surfaces in variable cher view for a computer system, as well as a computer system, a computer program product, a network server and one Network client for operating such a method.

Known methods for changing, especially spatial Representation of objects relate in particular to the rotatable one Object representation. It is an object on a computer screen shown. The user has the option of using Input means to change the representation so that it the Ein pressure wins to rotate the object. Technically become this For the purpose of displaying different images one after the other each display the object in a modified view.

Interactive areas are, for example, areas in graphic form Representations on computer screens, on which a user can move a cursor using a computer mouse, for example, and through what actions are triggered when the user turns on pressed a key at this point. Technically, Hy perlinks used. These are based on the state of the art certain areas within a single two-dimensional Image bound by a region ("Area") by specifying the absolute pixel coordinates is defined in the display and the hyperlink is bound to this region. Is located the cursor or mouse pointer within that region while the Mouse button is pressed, the assigned hyperlink executed.  

The known method for creating interactive surfaces is especially for use in the context of a variable spatial representation of an object is poorly suited. This is because there is a plurality for such a representation of images is required, and accordingly in each one individual image each interactive surface must be created. The effort for this is considerable. Add to that that ever de subsequent change is correspondingly complex.

The object of the present invention is an improved one Method for generating a representation of an object with Interactive surfaces in a variable view for a compu tersystem, as well as a computer system, a computer program pro duct, a network server and a network client for operation ben to provide such a procedure.

It achieves this goal by the subject matter of claims 1 or 18-22, i.e. by a method for generating a dar position of an object with interactive surfaces in variable cher view for a computer system, as well as a computer system, a computer program product, a network server and one Network client for operating such a method. there a browser is used for a computer system; also for the variable representation of the object a plurality of two-dimensional images, each of which the object in below display different views and which in a browser window are shown. There is one for each picture Position and / or spatial position of the displayed object in assigned to a reference system. For the interactivity to be generated ve surface a model surface is used, its position and / or spatial position in the reference system is variable. A first position and / or spatial position of the model surface is in Reference system assigned to a first image. At least with one The change of representation from the first to a second picture becomes the Position and / or spatial position of the model surface accordingly the change in position and / or spatial location of the darge posed object changed. At least a projection of the Mon dellfläche is in the new position and / or spatial position  calculated on the second picture. This projection is for the Definition of the interactive surface in the representation of the two used in the browser window.

Compared to the prior art, the invention has in particular the advantage that with a variable object display the Effort for creating interactive surfaces is reduced. Further advantages result from the description below Exercise of embodiments and the accompanying figures. The Claims 2-17 relate to advantageous embodiments of the he making.

The invention is described below with reference to exemplary embodiments len and the accompanying drawing explained in more detail. In the Drawing are:

. 1a-e are schematic representations of possible veränderli cher object views and / or states, which advantageously using the invention can be provided is Fig;

Fig. 2a-c are schematic illustrations of computer systems, in which the present invention is implemen advantage;

Fig. 3 is a schematic representation of the operation of a browser;

Fig. 4 is a schematic representation of an overview of a method in which the present invention is used;

Fig. 5a-c illustrations for the definition of Bildfol gene;

FIG. 6a, b show schematic representations of the processing of the image data for transfer;

Fig. 7a-c illustrations of a preferred processing transmitted image data;

Figure 8a, b illustrations of a preferred method for incorporation of program elements in a browser page.

FIGS. 9a-c illustrations of a preferred method for determining an object to be displayed view; and

FIG. 10a-d illustrations of a preferred method for inserting interactive surfaces in the veränderli che representation.

In the following, various exemplary tasks will first be explained with reference to FIGS . 1a-1e, in which objects are to be represented in changing views and / or states. The present invention is particularly advantageously used in methods, computer program products and / or computer systems for realizing such representations. Referring to Figs. 10a-d are advantageous Ausgestal obligations of the invention described. FIGS. 2a-9c relate to examples of a technical environment in which the invention advantageously is used.

Examples of variable object views to be displayed and / or conditions

Fig. 1a shows a first object 100, which has the shape of a cube. The first object 100 is shown in an external view. In addition, a three-dimensional Cartesian coordinate system with three mutually perpendicular axes X, Y and Z is shown. The subject of a variable object representation can be the rotation of the first object 100 about the vertical axis Z (indicated by a first and a second arrow P1, P2). In addition or instead, rotations of the object 100 about one of the horizontal axes X and / or Y (indicated by a third and a fourth arrow P3 and P4; rotations about any other axis are also possible in the same way). The first object 100 would therefore be shown in a variable spatial view.

FIG. 1b shows a second object 110 which has the shape of the elevation of a room. The second object 110 is shown in a combined interior and exterior view. The subject of a variable object display can be rotations of the second object 110 about the same axes as in the first object 100 . A combined interior and exterior view as well as a mere interior view can be shown. The second object 110 would thus also be shown in a variable spatial view.

Fig. 1c shows a third object 120 which has the shape of a house wall. The subject of a variable object display can be displacements of the third object 120 along the horizontal axis Y parallel to the third object or any other axis (indicated by fifth and sixth arrows P5 and P6).

Fig. 1d shows a fourth object 130 and a fifth object 140th Both objects 130 and 140 have the same shape and position, but a different color. The object of a variable object representation can be the transfer of the fourth object 130 into the fifth object 140 (indicated by a seventh arrow P7).

Fig. 1e shows a sixth object 150 , which has the shape of a gearwheel, and a seventh object 160 , which has the shape of a spring. Gear 150 and spring 160 interlock. When the gear wheel 150 is rotated (indicated by an eighth arrow P8), the objects 150 and 160 are transferred to a state which is different from the initial state (indicated by a ninth arrow P9), in which the gear wheel 150 'rotates from its initial state and the Fe the 160 'appears bent. This transfer can be the subject of a variable object display. It would be necessary to show a change in the state of the objects 150 and 160 over time .

The described objects of variable object representations are not limited to the objects 100 , 110 , 120 , 130 , 140 and 150 shown . Rather, these can be replaced by any other objects. The exemplary objects 100 , 110 , 120 , 130 , 140 and 150 are only used for illustration. The different changes in object views and states can also be combined with one another as required. Further changes are also conceivable.

For the following, the only thing that matters is that there are changes at all representations of object views and / or states are. How they work in detail is important Come on. As far as specific changes are referred to, serves this always only for easier understanding of the representation of the Invention.

Examples of computer systems in which the invention imple is mented

Fig. 2a shows a first computer system in the form of a computer he most 200 with a monitor 210 and a computer mouse 220th Instead of the monitor 210 , any other display means, such as a projector, can be used. Instead of the computer mouse, any other cursor positioning means, such as a track ball, a touch pad, a mouse stick, a touch screen or arrow keys of a computer keyboard (not shown) can be used.

The first computer 200 has a first data store in the form of a disk storage 230 , such as a hard disk, CD or floppy disk, and a second data store in the form of a main and / or main memory 240 (indicated by a dashed tenth arrow P10). , Data is transferred between the disk and the working memory 230 and 240 (indicated by an eleventh arrow P11). It is transmitted, for example, via conventional interfaces, bus systems and / or network components (not shown). The processing and / or processing of data takes place via a CPU (Central Processing Unit), which is also not shown.

Finally, the first computer 200 may include all other usual components such as further disk storage, a graphics card, etc.

There is data on disk storage 230 . The first computer 200 can access this data via control means. For this purpose, one reading head (not shown) is moved into the area of the desired disk sector and the data searched for is then read out. This process is time-consuming because of the read head's necessary procedure to find the data. A realistic access time is on the order of 200 ms for floppy disks, 5-20 ms for hard disks and 50 ms for CD-ROM.

Fig. 2b shows another computer system in which the prior invention is implemented. The system again includes the first computer 200 with monitor 210 and computer mouse 220 . In this respect, what has been said above applies. The first computer 200 in turn also has a working memory 240 . A disk storage 230 , however, is not required in this example (but can be provided). Instead, the first computer 200 is now connected to a second computer 250 , for example, via a serial or parallel interface or via a network card.

The second computer 250 can be part of a direct PC connection, further computers of a cluster or servers of a network. The second computer 250 has a data memory (not shown) on which data can be stored. Data is transmitted between this data memory and the working memory 240 on the first computer 200 (indicated by a twelfth arrow P12). A common protocol is used for this purpose, for example a basic protocol for a simple physical network connection such as Ethernet or Token Ring or an Internet protocol such as a TCP / IP or the http protocol.

Due to the transmission rates and read times from the data memory in the second computer 250 , these processes are also time-consuming.

Fig. 2c shows, finally, a third computer system, in wel ches the present invention is implemented. This system also comprises the first computer 200 together with monitor 210 and computer mouse 220 in accordance with the above statements. Instead of a second computer 250 , the first computer 200 is now connected to a comprehensive network, for example the Internet. This includes a plurality of computers, indicated by a third, fourth and nth computer 260 , 270 and 280 , respectively. Data is transmitted between the first computer 200 and the further computers 260 , 270 and 280 (indicated by thirteenth arrows P13, P13 / 1, P13 / 2 and P13 / n). In addition, data is transmitted between the further computers 260 , 270 and 280 (indicated by a fourteenth arrow P14). As a result, the data transmission between the first computer 200 and one of the further computers 260 , 270 and 280 can also take place indirectly via other computers 260 , 270 and / or 280 . The transmissions take place, for example, according to an Internet protocol such as a TCP / IP protocol. The first computer 200 acts as a client computer, for example, and the third computer 260 acts as a server. For each transmission, a connection is then negotiated by multiple packet exchange between the first computer 200 and the third computer 260 . Only then will the data be transferred so that this process is also time-consuming.

The aforementioned packet exchange for transmissions includes the following steps: First, a so-called URL (a Uniform Resource Locator, i.e. a unique address such as http: / / www.adresse.com/filename.html) must be in the protocol type, the computer name and the Filenames are separated. From the domain's plain text name of the computer (here: www.adresse.com) the associated IP address (Internet protocol address, i.e. the numerical address at which a specific computer can be reached on the Internet, such as 145.96.123.97) be determined. Here, in increasing order, more and more domas in name servers are queried per request data packet until the IP address associated with the URL is found in a database. Then an available path must be found through the Internet, via which the client computer 200 and the server computer 260 can exchange data with one another. For this purpose, the client computer 200 must first send a data packet to the server computer by means of a possible route, with which it announces its intention to establish a TCP (Transmission Control Protocol) connection. This is acknowledged by the Sever 260 with a data packet if it accepts the connection. This causes further delays until the server has completed the necessary preparations. The receipt of the acknowledgment is again acknowledged by the client 200 . Only then will the actual data be transferred. If one of the request packets is lost, the entire procedure begins anew using another possible connection path.

The above examples of computer systems in which the present invention - as explained in more detail below - imple ment is not a final list and can can also be combined with one another as required. They serve le diglich as illustrations for a better understanding of the Invention.

Example of a browser used in connection with the Er finding is used

Fig. 3 shows a schematic representation of the operation of ei nes browser 300th This is a common browser such as Netscape Navigator 4.x, Netscape 6.0, Microsoft Internet Explorer 4.x, 5.x, a previous or subsequent version thereof, or another browser software product. The browser 300 is implemented as software on one of the computer systems described and has access to the working memory 240 of the first computer 200 . He holds the code 310 of a browser page including all information to be displayed from the disk storage 230 , from the second computer 250 and / or from one of the further computers 260 , 270 , 280 . This code 310 is usually based on a simple document description language called HTML (HyperText Markup Language; any further or alternative development of this is also possible), which in turn can be based on a subset of a more general language called SGML (Standardized Generalized Markup Language). It is therefore referred to below as HTML code 310 for reasons of simplicity, but without restricting the invention.

As such, HTML code contains no constructs for program control (for queries, jumps, subroutines, etc.) and no exact description of a document view. Instead, he only defines a few global attributes for headings, body text, positioning, etc., which can lead to quite different representations of the same document on different platforms or browsers. HTML only provides a browser with information on how it can display a correspondingly drafted document; Each browser largely decides on the actual output depending on the implementation and user settings. The display is shown as browser page 320 on a display means such as monitor 210 .

In addition to or instead of text lines 322 , browser page 320 also contains graphics 324 . For this purpose, graphics are also loaded into the working memory 240 in addition to the HTML code 310 . The HTML code 310 contains information about which graphics 360 should be displayed in which area of the browser page 320 and how. As long as the graphic 360 is not or not completely available in the working memory 240 , an icon or an empty space is usually displayed in the corresponding area instead.

The graphics 360 are loaded in an image data compression format supported by the browser, such as JPG (Joint Photographic Ex pert Group; a graphics format named after the responsible ISO / CCITT commission), GIF (Graphics Interchange Format) or PNG (Portable Network Graphics). Such a supported format can be decompressed by the browser without the aid of other programs and transferred to a binary code that can be displayed directly.

The HTML code also includes or accesses various HTML extensions 330 , 340 and 350 . This is, for example, Dynamic HTML, which includes technologies such as JavaScript, Jscript, VBScript, CSS or Layer and which can be linked together. Such HTML extensions allow dynamic content to be inserted into HTML pages. JavaScript, JScript and VBScript are not all too complex script languages with which an HTML page can be expanded with real programs. However, the languages are not intended for complex applications or for independent programs. JavaScript, Jscript or VBScript programs are integrated in plain text into an HTML page, loaded with it into the working memory 240 and executed on the first computer 200 by a script interpreter. A browser that lacks the associated script interpreter cannot do anything with the script. Current browsers like the ones mentioned above usually have such script interpreters. CSS includes a style sheet technology. Layers are parts of a browser page that can be positioned relatively or absolutely and moved independently of other elements on the page. Several layers can overlap like transparencies and hide each other.

All listed above as examples, from the browser without Extensions of processable or representable data formats, like all other data formats with this property, are referred to below as browser data formats.

The above and other HTML extensions can - as ge says - usually directly from current browsers, i.e. H. without the need for additional plug-ins (a plug-in is a  dynamically loadable module that a browser around certain Capabilities expanded) or from Virtual Java Machines (one Virtual Machine is an interpreter for Java applications, wel implemented in a browser similar to a plug-in can be processed). In addition, a HTML page prompt the browser, Java applets or programs execute which such virtual machines or plug-ins as Require an addition for the browser.

A Java program is usually compiled once. The resulting binary bytecode is generated by a command in HTML Code reloaded and executed by the browser. This is a yes especially interpreter, such as a virtual machine required. Wesent The advantage of a Java program is its processor and Platform independence. The same compile can therefore be set to In tel-PCs under Windows or Linux, on Power Macs or on Al pha machines are running. In contrast, plug-ins are common depending on the platform. In addition, it should be noted that just like Java programs also HTML codes and Java Script are platform independent.

In summary, FIG. 3 shows how the HTML code 310 , which includes HTML extensions 330 , 340 and 350 (indicated by dashed arrows P15, P16 and P17), is made available in the working memory 240 for the browser 300 (indicated by an eighteenth Arrow P18). In addition, the browser 300 receives images 360 there (indicated by arrow P20). From this, the browser 300 generates the browser page 320 , which is displayed on the monitor 210 and which comprises text lines 322 and an image 324 .

Preferred method - embodiment

Fig. 4 shows an overview of a method in which the invention is used. The method is used to generate a variable representation of an object, in particular in a variable spatial view. As an example, the first object 100 from FIG. 1a is shown in a variable spatial view. However, any other object from FIGS. 1a-1e, or any other object, could also be represented in an arbitrarily variable manner according to the same principles.

The method according to the invention is implemented in one of the computer systems from FIGS. 2a-2c and is carried out in the first computer 200 . For implementation, the method is e.g. B. completely or partially mapped in a corresponding JavaScript, Jscript, VBScript or another suitable script code, which is inserted into the HTML code 310 . The script code is executed by the browser 300 on the computer 200 using further browser routines. Monitor 210 serves as display means and computer mouse 220 serves as cursor positioning means.

The individual method steps are explained below with further reference to FIGS . 5a-9c.

Explanations of the first process step

In a first step, data of a plurality of images 400 , 402 and 404 , which each represent the first object 100 in a different view or in a different state, are in a browser data format, in particular in an image data compression format such as JPG, GIF or PNG supported by the browser , provided in the first data storage 230 or on a data storage in one of the further computers 250 , 260 , 270 and / or 280 (indicated by a twenty-first arrow P21).

The number of images 400 , 402 , 404 depends on the purpose of presentation and the external conditions (ultimately, the selection of a suitable image size or the compression factor for lossy compression methods such as JPG depend on the same factors):
Depending on the purpose of the illustration, the method can basically also be carried out with only two images. All sides of the cube-shaped first object 100 can thus already be shown. In order to represent a complete rotation of the first object 100 about an axis Z and thereby give an observer a sufficient impression of rotation (and not simply the display of several images), a number of at least 12 images has proven to be expedient. In order to give a good impression of a continuous rotation, a number of at least 24 images is suitable. If the object has a lot of details that are to be displayed precisely during the rotation, a larger number of images is required. If, instead of the outside view of an object, as in the case of the first object 100, the inside view of a room, as in the case of the second object 110, is to be shown during a full rotation about an axis Z, a good rotation impression is obtained from a number of 36 images.

On the other hand, for a presentation technique according to the invention, the most important external fact is the necessary transmission time for the data to be taken into account, especially since it has to be loaded from the first data memory 230 (or 250 , 260 , 270 , 280 ) into the working memory 240 . If, for example, the display is to be embedded in a website for advertising purposes and it can be expected that a user will only look at this page for a short time, a smaller number of images is recommended. If, conversely, a variable representation of an object in a business-to-business application with a high transmission rate comes into play, a larger number of images may be appropriate (for example, it may be cheaper here to give a detailed view of an external technician to transfer repairing object with a relatively high effort than to give him instructions by phone).

For images other than rotations, the appropriate Bil Finally, the number largely depends on the individual case.  

In the exemplary embodiment described here, a full rotation of the first object 100 about the Z axis is shown. 24 images are used for this. The images can be generated by means of a computer, taken from a real object by photo or made available as drawings etc. For reasons of simplicity, only the procedure for taking the photos is described below. Instead, a simulation would have to produce corresponding images; a drawing should include corresponding pictures. The aforementioned possibilities for generating images, as well as all other possibilities, can also be combined with one another as desired without influencing the invention.

To take the photos, the object 100 is stored, for example, on a surface that can be rotated about the Z axis. Then a camera is firmly positioned at a desired distance and viewing angle. For each individual picture, the object 100 is rotated further about the Z axis by a uniform angle of rotation in the same direction of rotation. In order to represent a rotation with 24 images (the image for the output rotation angle of 0 ° is the same as the image for the final rotation angle of 360 °), the rotation angle is 360 ° / 24 = 15 °.

For a corresponding representation of the inside view of the second object 110 one would have to proceed in reverse, ie the camera would be mounted at a desired position in the room 110 rotatably about the Z axis. However, since the result always depends only on the relative rotation, generally only one rotation of the object 100 or 110 about the Z axis is mentioned below.

Such a related plurality of images is described in the fol called the image sequence. In the example, this includes Image sequence always a plurality of object views from one Rotation around the Z axis. However, it is possible that the procedure according to the same principles with any other definition execution of the image sequences. For example, the bil that within a sequence of pictures also by means of color modification nen, modifications of the design and / or different  Differentiate states of the displayed object. To this For example, it is possible to have a machine in the mold to show that you can move the machine forward and can run backwards. In general it would be possible to get one to represent the temporal development of an object.

A plurality of image sequences can also be used to expand the method. This is illustrated by FIGS. 5a-5c.

Thus, a first image sequence in accordance with FIG. 5a, one full rotation of the first object 100 about the Z-axis in a first relative position of the first object 100 to the Z-axis in steps of 15 representing ° as described above (indicated by the first arrow P1 ). A second image sequence entspre can accordingly 5b is a full rotation of the first object 100 'about the Z-axis in a second relative position of the first object 100' to the Z axis in steps of 15 as be written above represent ° (again indicated by. the first arrow P1). If a plurality of image sequences are defined in accordance with FIGS. 5a and 5b, it is possible to display a 4-Drehung rotation in the result, ie a full rotation around at least two different spatial axes and thus a rotation into any spatial position , For the individual images, the first object 100 is in each case tilted relative to the Z axis by a second axis of rotation, in particular perpendicular to the Z axis. Alternatively, an image sequence can also comprise only a partial rotation and / or another movement of the object 100 ′ shown.

Additionally or instead, a second image sequence can represent the object 100 ", as indicated in FIG. 5c, in a different color or generally after a change, but in the same relative position to the Z axis. For example, in the representation of a car, a sequence of images can depict the car with the doors and bonnet closed. Further sequences of images can each depict the object with one or more opened doors and / or bonnet. Further sequences of images then correspond approximately to the previously mentioned image sequences, but show the object in different colors 5a and 5b can be combined with those corresponding to FIGS. 5a and 5b so that the object is shown in different relative positions to the Z axis and in different states. In addition, as already mentioned, it is also possible to use completely different image sequences to use.

Explanations of the second process step

In a second method step, the images 400 , 402 , 404 are transferred from the first data memory 230 (or 250 , 260 , 270 and / or 280 ) to a second data memory, namely the main memory 240 , in particular using a data transfer routine of the browser 300 (indicated by a twenty-second arrow P22).

The delays described above inevitably occur during the transmission. These have a particularly negative effect on the individual transmission of, for example, 24 images 400 , 402 , 404 from an image sequence. In most cases, this prevents a variable object representation, which is based on reloading the image that contains an object view to be displayed. Such a representation would be jerky and not fluent, so that there would be no impression of rotation.

To remedy this, you can first transfer all images 400 , 402 , 404 of an image sequence individually and start the display after the transfer is complete. In this way you would get a fluent representation. However, the upstream charging time is relatively long.

An improved solution is to package the images 400 , 402 and 404 into a package and then unpack them in the working memory 240 . However, this requires a separate unpacking program according to the prior art, which leads to further circumstances (namely the installation, the additional use and further costs) and compatibility problems. Preferably, therefore, in the exemplary embodiment described, the approach presented below with reference to FIGS. 6a and 6b is selected.

First, in the example - as indicated by arrows P23, P24 and P25 in FIG. 6a - the images 400 , 402 and 404 are combined to form an image strip 600 . This can be done, for example, using a preferably automated graphics program. The image strip 600 thus corresponds to a wide image, which is composed of the individual images 400 , 402 and 404 (instead of the image strip 600 , an image plane, that is to say a plurality of image strips next to one another, so that the images cover an area of n. M images, or one any other composition can be selected). The image strip 600 is then as such in a browser data format, in particular in an image data compression format supported by the browser such as JPG, GIF or PNG, in the first data memory 230 or on a data memory in one of the further computers 250 , 260 , 270 and / or 280 provided for transmission. More generally, this approach means that multiple data sets, e.g. B. image data sets, combined in a Browserdatenfor mat to a data packet and in the first data memory 230 or 250 , 260 , 270 and / or 280 be kept ready for transmission.

It is now conceivable, as indicated in FIG. 6 a, to always combine all the images of an image sequence or even of several image sequences to form an image strip 600 . This minimizes delays caused by establishing a connection or by setting a read head. However, other aspects must also be taken into account on a regular basis. For example, during rush hours, individual negotiated connections can be at different speeds with an Internet transmission. There is thus the risk that the entire data packet is transmitted over a particularly slow connection (this aspect is, however, only to be taken into account for an Internet transmission and not for loading from a disk storage 230 ). In addition, the user is given more activity when a transmission of several packets instead of a large packet, which can lead to the user having to accept a longer waiting time. Against this background, it is proposed in the example described, as indicated in FIG. 6b, to combine 6 images into an image strip (indicated by arrows P26, P27 and P28), so that an image sequence of 24 images in 4 image strips 610 , 620 , 630 and 640 is transmitted to 6 pictures each.

In addition or as part of the data packet, information about the structure of the data packet with regard to the individual data records in the first data memory is kept ready for transmission. The structure information can include distance information and / or coordinate information in each case related to the image and / or include the image plane. This information can be explicit. However, it is also possible, for example in a Javascript, a Jscript or a VBScript within an HTML page 310 , which is also transferred to the working memory 240 , to provide only the equivalent information, for example an image strip 610 , 620 , 630 or 640 consists of six images of the same size lying side by side.

In a corresponding manner as the described images 400, 402, 404 basically all types can be summarized data, particularly audio data sets to Audio strips etc. In order after the transfer into memory 240, the data sets 610, 620, 630, 640, which in one of Browser 300 un supported image data compression format to use, they are first decompressed by the browser 300 without the aid of additional programs. In order then to separate individual data records from the image strips 610 , 620 , 630 and 640 and by means of the associated structural information, ie the data of individual images 400 , 402 and 404 , and to display them individually, one can now, for example, use a clipping routine and the Use transferred structural information. For example, one can proceed as described below with reference to FIGS. 7a to 7c:
First, a first image 400 of the image strip 610 is displayed in a browser window (indicated by arrow P29). For this purpose, a display area for the image 400 is defined in the browser window. This display area corresponds to the dimensions of an image and is delimited in FIGS . 7a-7c by two vertical boundary lines b1 and b2 and two horizontal boundary lines b3 and b4. The image strip 610 (or a corresponding image plane etc.) is positioned in relation to the browser window by means of a slide routine and using the structural information in such a way that the position of an image 400 to be displayed with the position of the display area, delimited by the boundary lines b1, b2, b3 and b4. The structural information is used for this, as well as for determining the dimensions of the display area. The image 400 to be displayed is then removed from the data packet 610 using the clipping routine and displayed in the display area using a display routine of the browser 300 . An object within an extended HTML document that can display an image in this way and has such a clipping routine is made available in Netscape Navigator, for example under the name "Layer" and in Internet Explorer under the name "Div". The first image 400 can be selected according to any criteria. It would be easiest to always use the first image in a sequence as the start image.

In order to display a further image 402 of the image strip 610 in the display area, the image strip 610 is correspondingly shifted relative to the display area and trimmed to the image 402 now to be displayed (indicated in FIG. 7b by an arrow P30). In order to avoid flickering, a double buffer system is preferably used before, so that the sliding and cutting process can be carried out in the background and a displayed image is only set by an image to be displayed when the sliding and cutting process are completed. Correspondingly, according to FIG. 7b, the first image 400 is still displayed during the shifting process. As soon as the second image 402 is positioned in the display area, and trimmed, instead of the first image in the browser page 320 in the defined display area 400 instead of the first image, the second image 402 is displayed (indicated by arrow P31 in Fig. 7c).

To display further or the original image 404 , 400 , the method described above is used accordingly. In the case of audio data, fast forward and rewind respectively the start position, etc.

In the transmission of the image strips 610 , 620 , 630 and 640 , as well as in general in the transmission of data, in particular also in the transmission of applets or other program routines, it can happen that either the transmission cannot be carried out or not completely, takes a long time, or that a browser does not have a script interpreter in the example, or in the case of a Java applet no virtual machine or in the case of another program that it does not have a required plug-in. In such cases, as already explained above, only an icon or a gray area is displayed in the browser page 320 according to the prior art. In order to avoid these disadvantages, the program elements required to generate the variable display are preferably integrated into the browser page 320 in the present example (and also generally before program elements in browser pages) in the manner described below with reference to FIGS . 8a and 8b:
First of all, the first data memory 230 (or 250 , 260 , 270 and / or 280 ) contains, in addition to the HTML code 310 of a browser page 320 and the image strips 610 , 620 , 630 and 640, at least one additional image sequence 800 . This additional image 800 can correspond to the first object view to be displayed. It can also include a reference to an ongoing data transfer. However, it can also have a completely different content, such as an advertisement.

In addition, the HTML code 310 of the browser page 320 defines a display area for the display of the additional image 800 , as well as a reference to the additional image 800 via an image identifier (such as the file name or image name). The display area corresponds to the area in which the desired variable display is to be displayed later. A call to the program elements required for this is initially only implicitly contained in the HTML code 310 , ie it has not yet been linked to the program elements, which, however, can currently be made up for by the appropriately correct assignment of the required variables. The HTML code 310 of the browser page 320 thus initially contains a placeholder in the form of the additional image 800 with an identifier for identifying the placeholder 800 .

The HTML code 310 and the placeholder 800 are transferred as the first part of a data transfer from the first memory 230 (or 250 , 260 , 270 and / or 280 ) to the working memory 240 (indicated in FIG. 8a by arrows P32 and P33, and Symbols 310 'and 800 ' in the memory 240 ). The browser 300 accesses this in a controlled manner by the HTML code 310 (indicated by arrow P34). It takes the HTML code 310 from the reference (indicated by arrow P36) to the placeholder 800 and, in an area of the browser page 320 on the monitor 210, represents the object of the placeholder image, in the example the first object view.

After loading the HTML code (and thus after, during or before loading the placeholder image 800 '), an insert routine is activated. The insert routine is preferably contained in HTML code 310 in the form of a Java script, script or VBScript. It takes information about the placeholder 800 'from the HTML code, such as e.g. B. about its height, width, position, name and position within the element list of the browser window. In addition, the insert routine starts the transmission, for example from the four image strips 610 , 620 , 630 and 640 of an image sequence into the working memory 240 (indicated in FIG. 8b by arrows P37, P38, P39 and P40, and by symbols 610 ', 620 ' , 630 'and 640 ' in RAM 240 ).

The insert routine monitors when the charging process is complete. After the transfer is complete, it activates the program elements required for this, provided the execution requirements for the variable display are also present. Preferably, the insert routine and the program elements for the variable display are depicted in the same script type, since the determination of the existence of the execution requirements for the variable display (in the example, the presence of a corresponding script interpreter) is then accomplished simply by the Insert routine is only executed in this case and can be. When the variable representation is started, the placeholder 800 is found using the identifier of the placeholder in the HTML code 310 of the browser page 320 and replaced by the program element for generating the variable representation in the browser page 320 . The HTML code 310 of the browser page 320 can remain unchanged as such, so that the placeholder 800 - figuratively speaking - is painted over in the representation; however, it is also possible to completely regenerate the HTML code 310 . The placeholder 800 is no longer shown in the result (indicated by arrow P36 in FIG. 8b). Instead, the browser 300 executes the program element, and displays the desired variable object representation in the region of the placeholder in the browser page 320 in Browserfen edge at (indicated by the cursor mark 810 in the browser page 320). However, if the program element cannot be executed, the placeholder 800 remains visible.

As an identifier for the placeholder 800, the file-name of the spacer 800 is preferably completely or partially, or another corresponding identification feature as the element used name.

The procedure described has the advantage that, depending on the type of placeholder 800 used , a longer loading time for a first impression of the object to be displayed, an advertisement, a loading message or a combination thereof can be used. Several images can also be displayed one after the other in a time-controlled manner. In the first case, an impression of the content of the display is also given on browsers that cannot carry out the variable display. In addition, no incomplete browser pages are displayed. Finally, when creating the browser page 320, it is possible to integrate several animations into one page without any special effort and only by naming the placeholder name.

Explanations of the third process step

After completion of the data transmission for at least one full continuous image sequence a first image is at least displayed 400 using a presentation routine of the browser 300 in an area of a browser page 320 in a browser window on the monitor 210 (indicated in Fig. 4 by the arrow P43). This is possible because the browser 300 can process data from the working memory 240 (indicated by arrow P44 in FIG. 4). Since the transmission of several image sequences takes correspondingly longer, this step is preferably carried out as soon as the first image sequence has been completely transmitted and is not waited for further image sequences. Rather, these are reloaded as required. One can also start with the display after the transmission of the first image strip 610 of an image sequence or even a single image 400 , 402 or 404 . However, this would lead to problems in the further course of the procedure, since delayed reloading leads to a jerky instead of flowing display. The first image 400 , 402 , 404 of an image sequence (for the order of the images 400 , 402 , 404 within an image sequence see below) is preferably displayed first and thus as a start image.

Explanations of the fourth step

The fourth method step can in principle be carried out before or after the transmission of the images 400 , 402 , 404 , for example in the form of image strips 610 , 620 , 630 , 640 and / or before the representation of the first image 400 . It includes the assignment of the individual images 400 , 402 , 404 to an object view area, which comprises the object view shown in each case (see in more detail below). If this step is carried out before the transfer, the assignment data it averaged must also be transferred to the second data memory, ie into the working memory 240 .

The concept of the object view area is to be understood broadly in this context. In the case of a variable spatial representation of an object 100 , 110, it relates, for example, to the rotation angle range for which an image 400 , 402 , 404 is displayed (as already explained above, only certain views are shown in images 400 , 402 and 404 ; consequently, the display is always rotated in steps, ie a single image is displayed for a certain range of rotation angles). In the case of the representation of a back and forth movement along a motif as in FIG. 1c, the same applies with regard to a displacement area, unless a continuous long image is generated, from which sections are shown. In the event of a change in colors etc. (see FIG. 1d) or a change in the state of time (see FIG. 1e), the object view area corresponds to the section of the color space or the time area for which an image is displayed. For reasons of simplicity, but without limitation, the following explanations relate only to the case of the rotatable representation of an object 100 or 110 . The object view areas are therefore each defined for an image sequence as areas of rotation angle with respect to the first rotation axis, namely the Z axis.

In the case of the representation of a full rotation about the Z axis in expediently uniform steps, the amount of the rotation angle ranges for an image sequence is determined by division of 360 ° by the number of images 400 , 402 , 404 , that is to say with 24 images a range of 360 ° / 24 = 15 °.

As stated above, each image 400 , 402 , 404 represents an object view to which an angle of rotation belongs. These angles of rotation are 0 °, 15 °, 30 °,. , , and 345 °. In other words, these are the angles of rotation or the associated object views, which are shown exactly in the individual images 400 , 402 , 404 . In the display, however, especially since only a finite number of images are available, the individual images 400 , 402 , 404 also have to be displayed when using input means such as the computer mouse 220 (see below in detail) is easy in itself changed rotation angle is specified. For this purpose, each image 400 , 402 , 404 is preferably assigned an angle of rotation range, in the center of which is the angle of rotation associated with the object view, and which extends in both directions of rotation by half the amount of the angle of rotation range calculated as shown above. In the example with 24 images, the individual images 400 , 402 , 404 would be assigned the following rotation angle ranges:
0 ° ± 7.5 °, 15 ° ± 7.5 °, 30 ° ± 7.5 °,. , , and 345 ° ± 7.5 °.

The assignment can be made explicitly, ie the angular ranges are calculated and the resulting data made available to the browser 300 . However, it is preferably carried out implicitly by specifying a sequence for the images 400 , 402 , 404 of an image sequence (and thus also for the individual image strips 610 , 620 , 630 , 640 ) and inputs via input means (as explained in more detail below) in each case are treated in such a way that predetermined entries lead to a change of image. For example, a displayed image 400 , 402 or 404 can be replaced by an adjacent image 402 , 404 , 400 when moving the mouse to a certain extent and in one direction, etc. It should be noted that the first and last image an image sequence (0 ° and 345 °) are to be regarded as adjacent.

If, as described above, several image sequences are used to represent a 4 Π rotation in whole or in part can, the individual image sequences in a corresponding manner in each case an angle of rotation range related to the second axis of rotation assigned.

Explanations of the fifth process step

In a fifth step, resultant changes in position of the cursor 810 are determined from at least one actuation of the cursor positioning means, for example the computer mouse 220 , using an event handler of the browser 300 . Instead of the movement of a computer mouse, for example, the duration of a key press can also be used as a decisive parameter. The data obtained in this way are used in further process steps to control the variable display. Additionally or instead, the variable representation can be coupled to a parameter that can be changed over time. In this way, for example, a self-rotating object can be displayed.

In principle, the fifth step could already take place before fourth step in the sense that only one Cursor movement leads to the display of the first image. Zweckmäßi ger is, however, the Rei proposed in the embodiment disassembly.

Explanations on the sixth to eighth process step

In a sixth and seventh method step, at least one object view to be displayed is determined using object area data and position change data of the cursor 810, and an image 400 , 402 is determined at least once, the associated object view area of which comprises the object view to be displayed after the change. In an eighth method step, an image determined in this way is then displayed in the browser window at least once using the display routine and, if appropriate, the shifting and clipping routines of the browser.

In the case of a first exemplary embodiment, position changes of the cursor 810 in or against the direction of a first coordinate axis, for example the X axis, are based on rotations of the object 100 about the first axis of rotation, for example the Z axis perpendicular to the X axis from FIG . 1a based. It is fundamentally possible to take all cursor movements into account. However, it is better to take into account only those movements in which, for example, a button on the computer mouse 220 is pressed in order to avoid unwanted rotary movements.

This approach is explained below with reference to FIGS . 9a-9c:
First of all, by pressing the mouse button in FIG. 9 a, a first cursor position is defined, which is assigned to the center M of the object viewing area of an image 400 just displayed. Then boundaries g1 and g2 (and possibly further boundaries in the event that a mouse movement corresponds to the successive change of several images) of the object display area are represented by sections on the X-axis, which are each equally far from the starting point on the X-axis M run away. These sections are expressed, for example, in pixels, so that the initial situation of the cursor 810 is regarded as zero pixels, while the limits g1 and g2 as 0 ± x pixels (and the further limits as g1 - n. (2x) and g2 +, respectively n. (2x)) can be specified.

As long as the cursor is held within the limits g1 and g2, ie only moved by a few pixels, as in FIG. 9b, the first image 400 is displayed (indicated by arrow P45). However, as soon as one of the limits g1 or g2 (or the further limits) is exceeded, as in FIG. 9c, the image 402 that is adjacent in this direction in the image sequence is displayed instead of the first image 400 . If the cursor continues to move after the first image change, the above-mentioned limits apply accordingly for the next boundaries or for a return movement.

The process steps six to eight can be done as often as desired be repeated. In addition, changes in the position of the cur sors in or against the direction of a second, in particular for first coordinate axis X perpendicular, coordinate axis Z on Rotations of the object around a second axis of rotation (X or Y) be drawn.

If the object view areas are explicitly determined, is it is additionally or alternatively possible to display an ob Project view from the object area data of a darge provided object view and the position changes of the cursor Determine in the following way: First, the extent the change in position, for example measured in pixels, by means of a multiplicative conversion factor, such as the degree per unit Pixels, converted into an angle of rotation, approximately measured in degrees. The angle of rotation obtained in this way changes in position or against the direction of the respective coordinate axis in each case with a different sign. Finally the one with Signed rotation angle to the shown Ob project angle of rotation added. Preferably then an image is determined, its associated object view name hand over the object view to be displayed after the change summarizes by first of the object view to be displayed appropriate rotation angles with the rotation angle ranges of the individual Images of an image sequence and / or the rotation angle ranges of the individual image sequences is compared. Then the picture and / or the image sequence selected, in which or their arranged the angle of rotation range of the object to be displayed visible angle of rotation.

Alternatively, an algebraic calculation of which image is to be displayed. For example, the image to be displayed by multiplying the mouse movement measured in pixels using a dimension conversion factor Degrees per pixel and a division of the result thus obtained  measured by the step size in degrees. Here, for example be determined as a cursor movement of 8 pixels corresponds to the display area of an image.

The process steps 6 to 8 are also shown in Fig. 4 Darge. First, a first image 400 is displayed on monitor 210 . The cursor 810 is located in the left image area. The mouse button is then pressed and the cursor 810 'is moved into the right half of the image by means of the computer mouse 220 (indicated by arrow P47). The change in position of the cursor is detected via the event handler of the browser 300 (indicated by arrow P48) and translates into a corresponding change in the object view according to one of the methods described above. If it follows that a second image 402 is to be displayed, the display of the browser page on monitor 210 is changed accordingly (indicated by arrow P49). Process steps six to eight can be repeated as often as required (indicated by arrow P50).

Supplement or extension to the process example

For many applications, it is desirable to add ver changeable representation of an object after the previously be written procedures, as otherwise with variable ob ject representations to include interactive areas in the representation put. Here, as already described, preferably for the variable spatial representation of the object A plurality of two-dimensional images are used, each because represent the object in different views and which are displayed in a browser window.

Interactive areas are, for example, areas in graphic form Representations on computer screens, on which a user can move a cursor using a computer mouse, for example, and through what actions are triggered when the user turns on pressed a key at this point. Technically, Hy perlinks used. These are based on the state of the art certain areas within a single two-dimensional  Image bound by a region ("Area") by specifying the absolute pixel coordinates is defined in the display and the hyperlink is bound to this region. Is located the cursor or mouse pointer within that region while the Mouse button is pressed, the assigned hyperlink executed. A very simple version of an interactive surface che is achieved with the omission of the coordinates by the entire picture is linked with a hyperlink. The interacti ve area covers the entire dimensions of the image. Zusätz Additional mouse events can also be defined. Beispielswei It can be called mouse-over, i.e. H. the cursor is over moved across an interactive surface, briefly a frame shows which signals that an interactive area is available.

In order to display interactive surfaces in a changeable way To define the type described above in a meaningful way must of technology, for example, in a sequence of 24 pictures the interactive one adapted to the object view change Area to be created specifically. The effort for this, as well for every change, is considerable.

A possible remedy is explained below with reference to FIGS. 10a to 10d.

According to FIG. 10 a, the display goal is, for example, to represent a full rotation of the object 100 ′ about the Z axis in the direction of the arrow P1 in an image sequence of 24 images. An interactive surface 1000 is to be inserted on one side of the object 100 '.

The approach consists of first creating an image sequence without interactive surfaces. According to the display goal, the individual images 400 , 402 of the image sequence are each assigned a position and / or spatial position of the object 100 'shown in a reference system, namely the coordinate system spanned by the axes X, Y and Z. For the interactive surface 1000 to be generated, a model surface 1010 is used, the position and / or spatial position of which in the reference system (X, Y, Z) is variable. Then, according to FIG. 10b, a first position and / or spatial position of the model surface 1010 in the reference system is assigned to the first image 400 (indicated by arrows P51 and P52). The projection of the model surface 1010 onto the YZ plane shown in FIG. 10b is inserted into the image 400 , so that an image 400 ′ supplemented by an interactive surface is created.

According to FIG. 10c, the position and / or spatial position of the model surface 1010 ′ is then changed in accordance with the change in the position and / or spatial position of the object 100 ′ shown, and a projection is changed during a display change from the first image 400 to a second image 402 the model surface 1010 'in the new position and / or spatial position on the second image 402 algebraically, in particular by a rotation and / or translation matrix. This projection is shown at the top right in FIG. 10c. The calculations are either carried out on site using a corresponding Java Script, Jscript or Visual Basic routine, or are pre-calculated elsewhere by an authoring program and transmitted in the form of a list.

In principle, it would now be possible to use the projection directly for the definition of the interactive surface 1000 'in the representation of the second image 402 in the browser window. In many older browsers, however, only rectangular areas can be used as interactive areas, since other areas, such as polygons or ellipses, are often stable as a function and their use can lead to browser crashes.

Against this background, it is initially expedient to use a flat, rectangular surface as the model surface 1010 . Then, a projection of the model surface 1010 ', which is not rectangular as such, is preferably used for the definition of the interactive surface 1000 in such a way that the interactive surface 1000 has the shape of a rectangle which is in the position and size of the projection is similar. In order to ensure this and at the same time cover all areas where a user can expect an interactive area, the maximum values of the projection are preferably used to define a similar rectangle 1020 and thus a rectangular interactive area 1000 ', so that the rectangular inter active area 1000 'includes the projection of model area 1010 '.

In this example, the model surface 1010 is not shown as such, ie not visible, in the browser window. In order to calculate the projection of the model surface 1010 onto an object view to be displayed, an imaging matrix, preferably a rotation matrix, is used as the transformation algorithm.

Another problem is that with a full rotation of the object 100 'about the Z axis, the interactive surface 1000 is covered by the object 100 ' during half the rotation and is preferably also represented in this way. Accordingly, the method described above cannot simply be used in such a way that each projection of the model surface 1010 is also used to define an interactive surface 1000 , 1000 '. Rather, this should only be the case if the upper surface area of the object 100 'assigned to the interactive surface 1000 , 1000 ' is also visible.

In order to achieve this goal, the definition of the interactive surface 1000 , 1000 'is prevented by a hidden line algorithm when displaying a side of the object. For this purpose, the simplest way — as shown in FIG. 10d — is to define a normal vector n for the model surface 1010 . This makes it possible for the hidden line algorithm to use the surface normal n of the model surface 1010 in such a way that a projection of the model surface 1010 onto the object view to be displayed is only defined as an interactive surface 1000 if the surface normal to a viewer points out, ie points out of the image plane. More generally, it is expedient to use the normal vector in such a way that the inactive areas 1000 , 1000 'are deactivated whenever the normal vector lies outside a certain angular range.

A hidden line algorithm can also (partially) Hiding an object represented by another object be, so that in the case of concealment interactive surfaces can also be deactivated. It can also be useful that interactive areas as such in the display, for example in the "Run over" with the mouse to make it visible to the observer to clarify the available options.

As soon as interactive areas are defined, actions can be connected to them, for example, which change the object 100 'shown. For this purpose, after the interactive surface 1000 has been actuated, a first image sequence is replaced by a second image sequence. For example, it is possible to turn a car shown in different colors or with or without open doors, etc. The act zones belonging to interactive areas can also be triggered explicitly by calling up a corresponding function in Java Script, JScript or Visual Basic etc. become.

In addition or instead, actions can also be taken from outside the display are triggered. For example, inter active areas in the form of safety edges also next to or below half of the illustration. In all cases because a function in Java-Script (or Jscript, Visual Basic) called up, a hyperlink executed or the page newly created riert etc. It is also possible to display the values of Variables in Javascript, Jscript or VBScript to change to link two sides together. For example, it is possible, desired properties in one or more pages one car and then put it in another to represent.  

embodiments Computer system, computer program product, Network server and network client

The invention was in the previous versions in the form and described in the context of a process example. How nice said, the implementation of such a procedure requires one Illustration of the procedure in program elements, which are then in a computer system or in whole or in part on a network factory server or network client as a computer program product in be implemented. In other words, each one receives System through the implementation of the computer program product the technical properties of the invention or is adjusted accordingly. With this in mind, it goes without saying that the invention also the systems so equipped summarizes, which are also exemplary in the rest of the description are shown.

In particular, the invention comprises a computer system for generating a spatial representation of an object 100 , 110 , 120 , 140 , 150 , 160 in a variable view using a browser 300 , the computer system comprising a first and a second data memory 230 and 240 or 250 , 260 , 270 and / or 280 , display means 210 and cursor positioning means 220 , in particular comprising a mouse, a track ball, a touch pad, a mouse stick or a touch screen, for operating a method of the type described above.

The invention then includes a computer program product which is stored in a storage medium and which comprises software code sections with which steps for a method described above are carried out when the product runs on a computer 200 , 250 , 260 , 270 and 280 , respectively ,

The invention further comprises a network server 260 and in particular an internet server with a storage medium on which a computer program product is stored, which comprises software code sections with which steps of a method described above are carried out when the product runs on a computer 200 ; also a network server 260 and in particular Internet server with a storage medium on which a computer program product is stored, which comprises software code sections with which steps of a method described above are carried out when the product is on a computer 200 , 250 , 260 , 270 and 280 runs where the computer program product is at least partially transferable to another computer 200 , in particular to a network client and in particular an Internet client, and can be executed there.

Finally, the invention comprises a network client 200 and in particular an internet client with a storage medium 230 , 240 , on which a computer program product is stored, which includes software code sections with which steps of a method described above are carried out when the product runs on the client.

The exemplary embodiments shown serve for explanation the invention. They are not a limitation of claims to understand. Rather, the invention encompasses all others Embodiments which result from the claims.

General advantages of the exemplary embodiments

The described embodiments have in the various NEN variants the general advantage that a variable Representation of an object, especially in a variable one spatial view, to be inserted in a browser page can do without the need for a virtual machine or plug-in is. Usually, existing browser routines are used used in a previously unknown way. Contrary to exist the prejudice according to the state of the art arises out that for the generation of such a variable Dar no virtual machine or plug-in required is. This creates the procedure described changeable representations a significantly larger circle of Accessible to browser users, as representations according to known  Method. Thus, for example, the technical front Suspensions created, an improved, as it is still accessible che, possibility of internet advertising, as well as improved Establishment of display areas in Internet department stores ten. Other possible uses include. B. electronic hand books, employee training, interactive navigation elements etc. There is always the advantage over the state of the Technology simplified use, since no plug-ins loaded and must be installed. Also no plug-ins have to produ be decorated, developed ("maintained") or distributed. Instead, you can keep up with browser developments Make use of telbar. Another advantage of a Java Script program compared to plug-ins or applets is that compact program. A java script program to implement egg The method described above can be of the order of are less than 5 kB. This makes the program code very quickly loaded. Another advantage is that described methods for data transmission: if for example instead of 24 images, 4 image strips can be transferred Problems with firewalls are avoided, which sometimes Prevent many individual files from being accessed in a short time.

Claims (22)

1. A method for generating a representation of an object ( 100-160 , 100 ') with interactive areas ( 1000 , 1000 ') in a variable view and using a browser ( 300 ) for a computer system ( 200-280 ), the ver changeable representation of the object ( 100-160 , 100 ') a plurality of two-dimensional images ( 400 , 402 , 404 ) are used, each of which shows the object ( 100-160 , 100 ') in a different view and which are shown in a browser window with which

• a) the individual images ( 400 , 402 , 404 ) are each assigned a position and / or spatial position of the object ( 100-160 ) shown in a reference system (X, Y, Z);
• b) a model surface ( 1010 , 1010 ') is used for the interactive surface ( 1000 , 1000 ') to be generated, the position and / or spatial position of which in the reference system (X, Y, Z) is variable;
• c) a first position and / or spatial position of the model surface ( 1010 ) in the reference system is assigned to a first image ( 400 );
• d) at least in the event of a change of representation from the first ( 400 ) to a second image ( 402 ), the position and / or spatial position of the model surface ( 1010 ') corresponding to the change in the position and / or spatial position of the displayed object ( 100-160 , 100 ') is changed;
• e) at least one projection of the model surface in the new position and / or spatial position on the second image ( 400 , 402 ) is calculated; and
• f) this projection is used to define the interactive surface in the representation of the second image ( 402 ') in the browser window.

2. The method as claimed in claim 1, in which the object views of the individual images ( 100 , 110 , 100 ') differ by rotations of the object ( 100 , 110 , 100 ') about an at least one axis of rotation (Z). 3. The method according to any one of the preceding claims, in which a flat, rectangular surface is used as the model surface ( 1010 , 1010 '). 4. The method according to any one of the preceding claims, in which a normal vector (s) is defined for the model surface ( 1010 , 1010 '). 5. The method according to any one of the preceding claims, in which chem the model surface ( 1010 , 1010 ') is not shown as such in the browser window. 6. The method according to any one of the preceding claims, in which a rotation matrix is used to calculate the projection of the model surface ( 1010 , 1010 ') on an object view to be displayed as a transformation algorithm. 7. The method according to any one of the preceding claims, in which the projection of the model surface ( 1010 , 1010 ') is used in such a way for the definition of an interactive surface ( 1000 , 1000 ') that the interactive surface ( 1000 , 1000 ') has the shape of a rectangle or polygon, which is similar in position and size to the projection. 8. The method of claim 7, wherein the maximum values of the projection are used to define the rectangular interactive surface ( 1000 ') so that the rectangular interactive surface ( 1000 ') includes the projection of the model surface ( 1010 , 1010 ') , 9. The method according to any one of the preceding claims, in which chem

• a) an object ( 100 , 110 , 100 ') is displayed from at least two sides;
• b) the interactive surface ( 1000 , 1000 ') is assigned to one side of the object ( 100 , 110 , 100 '); and
• c) when displaying another side of the object ( 100 , 110 , 110 ') the definition of an interactive surface ( 1000 , 1000 ') is prevented by a hidden line algorithm.

10. The method according to claim 9, wherein the hidden line algorithm uses the surface normal (s) of the model surface ( 1010 , 1010 ') in such a way that a projection of the model surface ( 1010 , 1010 ') onto the object to be displayed view is only defined as an interactive surface ( 1000 , 1000 ') if the surface normal (s) points towards a viewer, ie points out of the image plane, or exceeds a certain angle to the viewer's plane. 11. The method according to any one of the preceding claims, in which chem with the interactive surface ( 1000 , 1000 ) actions are connected which change the displayed object ( 100-160 , 100 '). 12. The method according to claim 11, in which a first image sequence is replaced by a second image sequence to change the object ( 100-160 , 100 '). 13. The method according to any one of the preceding claims, in which with the interactive surface ( 1000 , 1000 ') actions are connected which make it possible to navigate in documents. 14. The method according to any one of the preceding claims, in which a hyperlink is connected to the interactive surface ( 1000 , 1000 '). 15. The method according to any one of the preceding claims, in which with the interactive surface ( 1000 , 1000 ') actions are connected which call other functions in Java Script, Jscript or Visual Basic. 16. The method as claimed in one of the preceding claims, in which actions which change the values of variables in JavaScript, Jscript or Visual Basic are connected to the interactive surface ( 1000 , 1000 '). 17. The method according to any one of the preceding claims, wherein the interactive surface ( 1000 , 1000 ') is at least temporarily shown or marked. 18. Computer system for generating a variable representation of an object ( 100-160 , 100 ') with interactive surfaces ( 1000 , 1000 ') in variable view using a browser ( 300 ), the variable representation of the object ( 100 -160 , 100 ') a plurality of images ( 400 , 402 , 404 ) are used, each of which represents the object ( 100-160 , 100 ') in different views, for operating a method according to one of the preceding method claims. 19. Computer program product which is stored in a storage medium ( 230 , 240 , 250 , 260 , 270 , 280 ) and which comprises software code sections with which steps according to one of the preceding method claims are carried out when the product is on a computer ( 200 , 250 , 260 , 270 , 280 ) is running. 20. Network server ( 250 , 260 , 270 , 280 ) and in particular Internet server with a storage medium on which a computer program product is stored, which comprises software code sections with which steps according to one of the preceding method claims are carried out when the product is on a computer ( 200 , 250 , 260 , 270 , 280 ) is running. 21. Network server ( 250 , 260 , 270 , 280 ) and in particular Internet server with a storage medium on which a computer program product is stored, which comprises software code sections with which steps according to one of the preceding method claims are carried out when the product is on a computer ( 200 , 250 , 260 , 270 , 280 ), the computer program product being at least partially transferable to and executable on another computer ( 200 ), in particular on a network client and in particular an Internet client. 22, network client (200) and in particular Internet client to a storage medium (240) on which a Computerpro stored program product comprising Softwarecodeab cuts, which steps are performed according to one of vorste Henden method claims when the product on the client (200) running.