Method and system for displaying picture content across devices

Abstract

The invention relates to a cross-device picture content display method and system. The method comprises the following steps: receiving a picture from a picture sending device and interest point position information of the picture; determining a display area of the picture on the display screen according to the position information of the interest point, the size information of the picture and the size of the display screen of the display equipment; and displaying the picture corresponding to the position information of the interest point in the display area. According to the scheme provided by the invention, the user only needs to determine the position of the interest point on the picture sending equipment, the operation complexity is reduced, compared with the sending of the position information of the selected picture area, the sending data volume of the position information of the interest point is obviously less, and the transmission error can be reduced while the transmission bandwidth requirement is reduced.

Description

Technical Field

[0001] This application relates to the technical field of image processing, and particularly to a method and system for displaying image content across devices. Background Art

[0002] In some specific application scenarios, one device needs to send an image to another device for display. For example, a mobile phone or a computer needs to send an image to an embedded device with a screen (such as a photo frame) for display. In these cases, the displayed content can be a partial area of the image, and it is required to be able to consistently display these areas on the device with a screen.

[0003] In the prior art, when a user sends an image from their own device to another device, while sending the image, the user also needs to select the area of the image to be displayed and send the position information (such as coordinate information) of the selected image area to the other device together. The other device displays based on the received image and the position information of the selected image area.

[0004] However, this way of displaying image content across devices requires the user to select the display area, increasing the complexity of the operation. Moreover, it is necessary to send the position information of the selected image area, and a large amount of information needs to be sent, making it prone to transmission errors. Summary of the Invention

[0005] Aiming at the problems existing in the prior art, this application provides a method for displaying image content across devices, where an interest point is selected on the image sending device, and the display device determines the display area based on this interest point.

[0006] According to the first aspect of this application, there is provided a method for displaying image content across devices, characterized by including:

[0007] Receiving an image from an image sending device and the position information of the interest point of the image;

[0008] Determining the display area of the image on the display screen according to the position information of the interest point, the size information of the image, and the size of the display screen of the display device; and

[0009] Displaying the image corresponding to the position information of the interest point in the display area.

[0010] According to the second aspect of this application, there is provided a device for displaying image content across devices, characterized by including:

[0011] A receiving module, configured to receive an image from an image sending device and the position information of the interest point of the image;

[0012] A determination module, configured to determine a display area of the picture on the display screen according to the interest point position information, the size information of the picture, and the size of the display screen of the display device; and

[0013] A display module, configured to display the picture corresponding to the interest point position information in the display area.

[0014] According to a third aspect of the present application, there is provided a system for cross-device display of picture content, characterized by comprising:

[0015] A picture sending device, configured to send a picture and interest point position information of the picture; and

[0016] A display device, configured to:

[0017] Receive the picture and the interest point position information of the picture from the picture sending device;

[0018] Determine a display area of the picture on the display screen according to the interest point position information, the size information of the picture, and the size of the display screen of the display device; and

[0019] Display the picture corresponding to the interest point position information in the display area.

[0020] According to a fourth aspect of the present application, there is provided an electronic device, comprising:

[0021] A processor; and

[0022] A memory storing computer instructions, which, when executed by the processor, cause the processor to execute the method described in the first aspect.

[0023] According to a fifth aspect of the present application, there is provided a non-transitory computer storage medium storing a computer program, which, when executed by a plurality of processors, causes the processors to execute the method described in the first aspect.

[0024] According to the method and system for cross-device display of picture content provided by the present application, the display device receives the picture and the interest point position information of the picture from the picture sending device, determines the display area based on the interest point position information, and displays the display area on the display device. According to the present application, the user only needs to determine the position of the interest point on the picture sending device, which reduces the operation complexity. Moreover, sending the interest point position information requires significantly less data volume compared to sending the position information of the selected picture area, which can reduce the transmission bandwidth requirement and reduce transmission errors at the same time. Description of the Drawings

[0025] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without exceeding the scope of protection required by the present application.

[0026] Figure 1 It is a schematic diagram of a system for cross-device display of picture content according to an embodiment of the present application.

[0027] Figure 2 It is a schematic flowchart of a method for cross-device display of picture content according to an embodiment of the present application.

[0028] Figure 3 It is a schematic diagram of a device for cross-device display of picture content according to an embodiment of the present application.

[0029] Figures 4(a) to 4(d) It is a process demonstration diagram of cross-device display of picture content according to an embodiment of the present application.

[0030] Figures 5(a) and 5(b) are process demonstration diagrams of cross-device display of picture content according to another embodiment of the present application.

[0031] Figure 6 It is a schematic diagram of the structure of an electronic device provided by the present application. Detailed implementation manners

[0032] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present application.

[0033] Figure 1 It is a schematic diagram of a system for cross-device display of picture content according to an embodiment of the present application. As Figure 1 shown, the system includes a picture sending device and a display device. In some embodiments, the picture sending device and the display device may include screen-equipped devices or apparatuses such as mobile phones, computers, tablet computers, and digital photo frames.

[0034] In some embodiments, a user selects an interest point of a displayed picture in a picture sending device, where the interest point is a part that the user expects to be displayed in a display device. Preferably, the interest point is the central position of the part that the user expects to be displayed in the display device. The picture sending device sends the picture and the position information of the interest point (e.g., including coordinate information) to the display device. The display device determines a display area based on the interest point and displays the display area on the display device. Figure 2 How the display device determines and displays the display area will be introduced in detail.

[0035] According to one aspect of the present application, a method for cross-device displaying picture content is provided. Figure 2 It is a schematic flowchart of a method for cross-device displaying picture content according to an embodiment of the present application. Figure 2 The illustrated embodiment mainly shows how to implement cross-device displaying picture content from the perspective of the display device. As Figure 2 shown, the method includes the following steps.

[0036] Step S201, receive a picture from a picture sending device and the position information of the interest point of the picture.

[0037] In some embodiments, a user selects an interest point of a displayed picture in a picture sending device and sends the picture and the position information of the interest point (e.g., including coordinate information) to the display device, and the display device receives the picture and the position information of the interest point. In some embodiments, the user can select the interest point in the picture in the picture sending device by means of gestures, clicks, etc. The selected interest point can be one interest point or multiple interest points.

[0038] Step S202, determine a display area of the picture on the display screen according to the position information of the interest point, the size information of the picture, and the size of the display screen of the display device.

[0039] In some embodiments, for the case where the selected interest points are multiple interest points, determine the positions (e.g., including coordinate information) and the order of the multiple interest points according to the position information of the interest points.

[0040] In some embodiments, the order of the multiple interest points can be the order in which the user selects the interest points. The display device receives the positions of the multiple interest points in sequence and connects the multiple interest points in the order of reception to form an area as the display area. In some embodiments, the order of the multiple interest points can also be the order set by the user. When the picture sending device sends the positions of the multiple interest points to the display device, it also sends the order information set by the user to the display device, and the display device connects the multiple interest points in the order set by the user to form the display area.

[0041] By transmitting multiple points of interest, the user can customize the display area, such as an irregular area, allowing the user to decide which part to display according to their own needs, providing flexibility in display; in addition, since only the positions of multiple points of interest are transmitted, compared with sending the position information of the selected picture area, the amount of data sent is significantly less.

[0042] In some other embodiments, for the case where the selected point of interest is a single point of interest, to determine the display area, the drawing starting point and size of the display area can be determined. After determining the drawing starting point information and size information of the display area, the display area can be determined.

[0043] In some embodiments, to determine the drawing starting point of the display area on the display screen of the display device, first calculate the position information of the display center point of the display screen of the display device, then determine the scaling ratio of the display area, and finally, based on the position information of the display center point, the position information of the point of interest, and the scaling ratio, determine the drawing starting point information of the display area.

[0044] In a specific embodiment, the position information of the point of interest of the picture is (imagePointX, imagePointY), the width of the display screen of the display device is deviceWidth, and the height is deviceHeight. Among them, the width and height of the display screen of the display device can be represented in pixels, for example, it can be 1280*760. The position information of the display center point: deviceCenterX = deviceWidth / 2, deviceCenterY = deviceHeight / 2.

[0045] The width of the picture is imgWidth, and the height is imgHeight. Among them, the width and height of the picture can be represented in pixels, for example, it can be 2000*2000. Calculate the aspect ratio of the picture (set as the first aspect ratio) imageAspectRatio = imgWidth / imgHeight and the aspect ratio of the display screen of the display device deviceAspectRatio = deviceWidth / deviceHeight (set as the second aspect ratio), compare the first aspect ratio and the second aspect ratio. In the case where the first aspect ratio is greater than the second aspect ratio, the scaling ratio can be determined according to the height information in the display screen size of the display device and the height information of the picture. For example, the scaling ratio scale = deviceHeight / imgHeight.

[0046] In the case where the first aspect ratio is not greater than the second aspect ratio, the scaling ratio can be determined according to the width information in the display screen size of the display device and the width information of the picture. For example, the scaling ratio scale = deviceWidth / imgWidth.

[0047] In some embodiments, determining the drawing start point information of the display area on the display screen based on the display center point position information, the point of interest position information, and the scaling ratio can be expressed as:

[0048] startX = deviceCenterX - (imagePointX * scale)

[0049] startY = deviceCenterY - (imagePointY * scale)

[0050] Where (startX, startY) represents the drawing start point information, (deviceCenterX, deviceCenterY) represents the display center point position information, (imagePointX, imagePointY) represents the point of interest position information, and scale represents the scaling ratio.

[0051] In the prior art, for different aspect ratios of display devices, such as in the landscape and portrait scenarios of mobile phones, the user selects the picture area to be displayed under one aspect ratio (e.g., landscape mode), and selects another area under another aspect ratio (e.g., portrait mode), and then sends the position information of the two areas together with the picture to the device side. The user needs to select the display area separately under different aspect ratios, which increases the complexity of the operation.

[0052] In contrast, in the present application, the display device automatically determines the scaling ratio according to the aspect ratio of the picture and the aspect ratio of the display screen of the display device, and then determines the drawing start point information of the display area, which can dynamically adapt to different device screen sizes and can also determine the display area according to whether the display device is currently in landscape or portrait mode. The user also does not need to select the display area separately under different aspect ratios, reducing the operation complexity.

[0053] In some embodiments, to determine the size information of the display area, the size information of the picture and the size of the display screen of the display device can be determined, and then the size information of the display area can be determined according to the size information of the picture and the size of the display screen of the display device.

[0054] In a specific embodiment, the width of the picture is imgWidth, the height is imgHeight, the width of the display screen of the display device is deviceWidth, and the height is deviceHeight. Calculate the aspect ratio of the picture (set as the first aspect ratio) imageAspectRatio = imgWidth / imgHeight and the aspect ratio of the display screen of the display device deviceAspectRatio = deviceWidth / deviceHeight (set as the second aspect ratio). Compare the first aspect ratio and the second aspect ratio. When the first aspect ratio is greater than the second aspect ratio, the picture can be fully displayed in height, and the size information of the display area can be (imgHeight / deviceHeight * deviceWidth, imgHeight), and the height of the display area corresponds to the height of the picture; when the first aspect ratio is not greater than the second aspect ratio, the picture can be fully displayed in width, and the size information of the display area can be (imgWidth, imgWidth * deviceHeight / deviceWidth), and the width of the display area corresponds to the width of the picture.

[0055] In the prior art, the solution of the user selecting the picture area to be displayed cannot effectively adapt to the display characteristics of different devices, especially when the screen sizes, resolutions and display ratios are different. For some devices with larger screens, it may cause the picture to be displayed blurrily and not clearly enough, thus affecting the user's viewing experience. In addition, there may be significant differences in the display effects of different devices, which not only reduces the unity of the visual effects.

[0056] In contrast, the present application can determine the size information of the display area according to the size information of the picture and the size of the display screen of the display device, and the display device determines the display content according to its own display screen size, so as to be able to automatically adapt to the display characteristics of different devices.

[0057] Step S203, display the picture corresponding to the interest point position information in the display area.

[0058] In some embodiments, after receiving the picture and determining the display area, the display device intercepts the picture content corresponding to the interest point position information covered by the display area on the picture, and then displays the intercepted picture content on the display screen of the display device.

[0059] According to another aspect of the present application, there is provided a device for cross-device displaying picture content. As Figure 3As shown, the device includes a receiving module 301, a determining module 302, and a display module 303. Among them, the receiving module 301 is used to receive the picture from the picture sending device and the interest point position information of the picture; the determining module 302 is used to determine the display area of the picture on the display screen according to the interest point position information, the size information of the picture, and the size of the display screen of the display device; the display module 303 is used to display the picture corresponding to the interest point position information in the display area.

[0060] In some embodiments, the determining module 302 includes:

[0061] A first determining sub-module, configured to determine the drawing start point information of the display area on the display screen and the size information of the display area;

[0062] A second determining sub-module, configured to determine the display area according to the drawing start point information of the display area and the size information of the display area.

[0063] In some embodiments, the first determining sub-module includes:

[0064] A calculation unit, configured to calculate the display center point position information of the display device according to the size of the display screen of the display device;

[0065] A first determining unit, configured to determine the scaling ratio of the display area; and

[0066] A second determining unit, configured to determine the drawing start point information of the display area according to the display center point position information, the interest point position information, and the scaling ratio.

[0067] In some embodiments, the first determining unit is configured to:

[0068] Calculate the first aspect ratio of the picture and the second aspect ratio of the display screen of the display device;

[0069] In the case where the first aspect ratio is greater than the second aspect ratio, determine the scaling ratio according to the height information in the size of the display screen of the display device and the height information of the picture; and

[0070] In the case where the first aspect ratio is not greater than the second aspect ratio, determine the scaling ratio according to the width information in the size of the display screen of the display device and the width information of the picture.

[0071] In some embodiments, the first determining sub-module is configured to:

[0072] Determine the size information of the display area according to the size information of the picture and the size of the display screen of the display device. Among them, when the aspect ratio of the picture is greater than the aspect ratio of the display screen of the display device, the height of the display area corresponds to the height of the picture; when the aspect ratio of the picture is not greater than the aspect ratio of the display screen of the display device, the width of the display area corresponds to the width of the picture.

[0073] In some embodiments, the determination module 302 includes:

[0074] A third determination sub-module, configured to determine the positions of multiple points of interest and the order of the multiple points of interest according to the position information of the points of interest; and

[0075] A fourth determination sub-module, configured to determine the display area according to the positions of the multiple points of interest and the order of the multiple points of interest.

[0076] In some embodiments, the display module 303 is configured to:

[0077] Intercept the picture content corresponding to the position information of the point of interest on the picture according to the display area; and

[0078] Display the intercepted picture content on the display device.

[0079] Figures 4(a) to 4(d) It is a process demonstration diagram of displaying picture content across devices according to an embodiment of the present application. Fig. 4(a) may be the original picture displayed by the picture sending device. A point of interest is selected on the original picture. As shown in Fig. 4(b), after the picture sending device sends the position information of the selected point of interest and the original picture to the display device, the display device determines the corresponding display area according to whether it is in landscape or portrait mode and displays it, as Figure 4(c) and 4(d) shown, respectively display the display areas corresponding to landscape and portrait modes.

[0080] Figs. 5(a) and 5(b) are process demonstration diagrams of displaying picture content across devices according to another embodiment of the present application. Fig. 5(a) may be the original picture displayed by the picture sending device. Multiple points of interest are selected on the original picture. For example, seven points of interest are selected in sequence. After the picture sending device sends the position information of the selected points of interest and the original picture to the display device, the display device determines the corresponding display area and displays it, as shown in Fig. 5(b).

[0081] According to the method and system for displaying picture content across devices provided by the present application, a display device receives a picture and the position information of the point of interest of the picture from a picture sending device, determines a display area based on the point of interest, and displays the display area on the display device. According to the present application, the user only needs to determine the position of the point of interest on the picture sending device, which reduces the operation complexity. Moreover, compared with sending the position information of the selected picture area, the amount of data sent for the position information of the point of interest is significantly less, which can reduce the transmission bandwidth requirement and reduce transmission errors at the same time. And for the case where the selected point of interest is a single point of interest, the present application determines the scaling ratio according to the aspect ratio of the picture and the aspect ratio of the display screen of the display device, and further determines the drawing start point information of the display area, which can dynamically adapt to different device screen sizes. The user also does not need to separately select the display area under different aspect ratios, which reduces the operation complexity. In addition, the present application can determine the size information of the display area according to the size information of the picture and the size of the display screen of the display device, and the display device determines the display content according to its own display size, so as to automatically adapt to the display characteristics of different devices.

[0082] In the above embodiments, the descriptions of the respective embodiments have their own focuses. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0083] It should be noted that for the foregoing method embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present application is not limited by the described action sequence, because according to the present application, certain steps can be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily essential to the present application.

[0084] In several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division, and there can be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed mutual coupling or direct coupling or communication connection can be through some interfaces, and the indirect coupling or communication connection of the device or unit can be in an electrical connection or other forms.

[0085] Refer to Figure 6 , Figure 6Provided is an electronic device, including a processor and a memory. The memory stores computer instructions or one or more programs, and when the computer instructions or the one or more programs are executed by the processor, the processor executes the computer instructions to implement the method and refinement scheme as shown in Figure 2 the following.

[0086] It should be understood that the above device embodiments are illustrative only, and the devices disclosed in the present invention can also be implemented in other ways. For example, the division of the units / modules described in the above embodiments is only a logical function division, and there can be other division methods in actual implementation. For example, multiple units, modules or components can be combined, or can be integrated into another system, or some features can be ignored or not executed.

[0087] In addition, without special instructions, in each embodiment of the present invention, each functional unit / module can be integrated in one unit / module, or each unit / module can exist physically alone, or two or more units / modules can be integrated together. The above integrated unit / module can be implemented in the form of hardware or in the form of a software program module.

[0088] When the above integrated unit / module is implemented in the form of hardware, the hardware can be a digital circuit, an analog circuit, etc. The physical implementation of the hardware structure includes but is not limited to transistors, memristors, etc. Without special instructions, the processor or chip can be any suitable hardware processor, such as a CPU, GPU, FPGA, DSP, and ASIC, etc. Without special instructions, the on-chip cache, off-chip memory, and memory can be any suitable magnetic storage medium or magneto-optical storage medium, such as a resistive random access memory (RRAM), a dynamic random access memory (DRAM), a static random access memory (SRAM), an enhanced dynamic random access memory (EDRAM), a high-bandwidth memory (HBM), a hybrid memory cube (HMC), etc.

[0089] If the integrated unit / module is implemented in the form of a software program module and sold or used as an independent product, it can be stored in a computer-readable memory. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a memory and includes several instructions for causing a computer electronic device (which can be a personal computer, a server, or a network electronic device, etc.) to execute all or part of the steps of the methods described in various embodiments of this disclosure. The aforementioned memory includes: various media such as USB flash drives, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), external hard drives, magnetic disks, or optical discs that can store program codes.

[0090] The embodiments of this application also provide a computer-readable storage medium storing one or more computer programs. When the one or more computer programs are executed by multiple processors, the processors are caused to execute as Figure 2 the methods and refinement schemes shown.

[0091] The embodiments of this application also provide a computer program product containing a computer program. When the computer program runs on a computer, the computer is caused to execute the method for displaying picture content across devices in any of the above embodiments.

[0092] The reference to features, advantages, or similar language in this specification does not mean that all features and advantages achievable by this solution should be included in or included in any single implementation thereof. On the contrary, the language referring to features and advantages is understood to mean that the specific features, advantages, or characteristics described in connection with the embodiments are included in at least one embodiment of this solution. Therefore, the discussion of features, advantages, and similar language throughout this specification may, but does not necessarily, relate to the same embodiment.

[0093] In addition, the features, advantages, and characteristics of this solution can be combined in any suitable manner in one or more embodiments. Based on the description herein, those of ordinary skill in the relevant art will recognize that this solution can be implemented without one or more specific features or advantages of a particular embodiment. In other cases, additional features and advantages can be realized in a particular embodiment that is not presented in all embodiments of this solution.

[0094] The above has introduced the embodiments of the present application in detail. Specific examples are used in this text to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, any changes or deformations made by those skilled in the art based on the idea of the present application, within the specific implementation manner and application scope of the present application, fall within the scope of protection of the present application. In summary, the content of this specification should not be construed as a limitation on the present application.

Claims

1. A method for displaying picture content across devices, characterized in that: Applied to display devices, including: Receiving a picture and location information of points of interest of the picture from a picture sending device; Determining a display area of ​​the picture on the display screen according to the location information of the point of interest, the size information of the picture, and the display screen size of the display device; and The picture corresponding to the location information of the point of interest is displayed in the display area.

2. The method according to claim 1, characterized in that The determining, according to the location information of the point of interest, the size information of the picture and the size of the display screen of the display device, a display area of ​​the picture on the display screen comprises: Determine drawing starting point information of the display area on the display screen, and size information of the display area; The display area is determined according to the drawing starting point information of the display area and the size information of the display area.

3. The method according to claim 2, characterized in that The determining of the drawing starting point information of the display area on the display screen includes: Calculating the display center point position information of the display device according to the display screen size of the display device; determining a scaling factor of the display area; and The drawing starting point information of the display area is determined according to the display center point position information, the interest point position information and the scaling ratio.

4. The method according to claim 2, characterized in that The determining the size information of the display area includes: The size information of the display area is determined according to the size information of the image and the size of the display screen of the display device, wherein, when the aspect ratio of the image is greater than the aspect ratio of the display screen of the display device, the height of the display area corresponds to the height of the image, and when the aspect ratio of the image is not greater than the aspect ratio of the display screen of the display device, the width of the display area corresponds to the width of the image.

5. The method according to claim 3, characterized in that Determining the scaling ratio of the display area includes: Calculating a first aspect ratio of the image and a second aspect ratio of the display screen of the display device; When the first aspect ratio is greater than the second aspect ratio, determining the scaling ratio according to height information in the display screen size of the display device and height information of the picture; and When the first aspect ratio is not greater than the second aspect ratio, the scaling ratio is determined according to width information in the display screen size of the display device and width information of the picture.

6. The method according to claim 1, characterized in that The determining a display area of ​​the image on the display screen includes: Determining the positions of a plurality of points of interest and the order of the plurality of points of interest according to the point of interest position information; and The display area is determined according to the positions of the plurality of interest points and the order of the plurality of interest points.

7. The method according to claim 1, characterized in that Displaying the picture corresponding to the location information of the point of interest in the display area includes: intercepting the picture content corresponding to the location information of the point of interest on the picture according to the display area; and The captured image content is displayed on the display device.

8. The method according to any one of claims 1 to 7, characterized in that The point of interest location information is determined by the image sending device collecting the user's gesture or click.

9. A device for displaying picture content across devices, characterized in that: include: A receiving module, used for receiving a picture and location information of a point of interest of the picture from a picture sending device; A determination module, configured to determine a display area of ​​the image on the display screen according to the location information of the point of interest, the size information of the image, and the display screen size of the display device; as well as The display module is used to display the picture corresponding to the location information of the point of interest in the display area.

10. A system for displaying image content across devices, characterized in that: include: A picture sending device, used to send pictures and location information of points of interest in the pictures; as well as Display devices for: Receiving a picture and location information of points of interest of the picture from a picture sending device; Determining a display area of ​​the picture on the display screen according to the location information of the point of interest, the size information of the picture, and the display screen size of the display device; as well as The picture corresponding to the location information of the point of interest is displayed in the display area.

11. A computer program product, characterized in that The computer program product comprises a computer program, which can cause a computer to execute the method according to any one of claims 1 to 8 by being operated.

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