JP2021060437A - Image processing device, information processing device, and computer program - Google Patents

Abstract

To provide an image processing device with which it is possible to reduce the possibility of an original image being recognized from each divided image as compared with the case where the same divided number of divided images are delivered directly as are, and improve the performance of display at a client as compared with the case where the number of divisions is increased.SOLUTION: Provided is an image processing device for dividing an image into N divided images, determining the order in which the divided images are synthesized, executing on each of the divided images a permeabilization process which is set so as to restore an image when all divided images are synthesized and in which respectively different permeabilization areas are adapted, in accordance with the synthesizing order, superimposing a discretionary image on a permeabilization area which is adapted in the permeabilization process with regard to the n-th divided image (n=2 to N) in the synthesizing order and that corresponds to a portion of a non-permeabilization area adapted in the permeabilization process with regard to those preceding the n-1'th divided image in the synthesizing order, generating conversion information that includes the sequence of permeabilization process, and transmitting each of the divided images after superimposition that constitute an image and the conversion information in response to the acceptance of an operation pertaining to image browsing.SELECTED DRAWING: Figure 2

Description

The present invention relates to an image processing device, an information processing device, and a computer program.

When distributing an image from a server such as a Web server to a client, there is an image distribution technology that can suppress the possibility of illegal leakage of the image by dividing the original image into a plurality of divided images on the server side. ..

Patent Document 1 is an image distribution program that causes a computer to execute a process of distributing image data to a Web browser, and is a step of receiving a request from the Web browser to request the computer to distribute the image data. , A step of generating a plurality of divided image data by dividing the image represented by the image data into a plurality of divided images, a dummy divided image representing an image different from the divided image for at least one of the plurality of divided images. A step of generating data, a list listing the addresses of the divided image data and the addresses of the dummy divided image data, is a script executed on the Web browser when the Web browser draws a response to the request on the screen. The step to describe in the script, the step to describe the parameter used to specify the divided image data from the list in the script, and the time until the screen drawing is completed by the Web browser in response to the request. A step of describing the process of downloading the divided image data and the dummy divided image data in the script by accessing the addresses listed in the list, and the Web browser responding to the request. A step of dynamically adding an HTML tag for displaying the divided image data on the screen specified by the parameter when drawing the screen in the script, and a response including the script to the request. An image distribution program is disclosed, which comprises executing a step of transmitting data to the Web browser as a response.

Japanese Unexamined Patent Publication No. 2017-151873

In order to reduce the possibility that the original image is recognized from the divided image, it is necessary to increase the number of divisions. On the other hand, if the number of divisions is increased, the number of times the divided image is acquired increases when the image is displayed on the client, and the display performance deteriorates.

The present invention has been made in view of the above points, and it is possible to reduce the possibility that the original image is recognized from each divided image as compared with the case where the divided images having the same number of divisions are delivered as they are. , Image processing equipment, information processing equipment, and computer programs.

The image processing apparatus according to the first aspect of the present invention includes a processor, which divides an image into N divided images, determines a compositing order of the divided images, and synthesizes all the divided images. A transmission process in which different transmission regions are applied so that the image is restored is executed for each of the divided images according to the composition order, and the composition order is n (n is 2 or more N). The non-transparent region which is the transparent region applied by the transparent treatment for the second divided image and is not the transparent region applied by the transparent processing to the divided image whose composition order is n-1 or earlier. After superimposing an arbitrary image on a region corresponding to a part of the region, generating conversion information including the order of the transmission processing, and accepting an operation related to viewing the image, the image is formed. Each of the divided images and the conversion information are transmitted.

The image processing device according to the second aspect of the present invention is the image processing device according to the first aspect, and the processor superimposes the arbitrary image on the transmission region of the divided image whose composition order is nth. At that time, the display form of the arbitrary image that is the basis of superimposition is converted and superposed.

The image processing device according to the third aspect of the present invention is the image processing device according to the second aspect, and the processor inverts or rotates the arbitrary image as a conversion of the display form.

The image processing device according to the fourth aspect of the present invention is the image processing device according to the first aspect, and the processor determines the composition order each time an operation related to viewing the image is accepted.

The image processing device according to the fifth aspect of the present invention is the image processing device according to the fourth aspect, and the processor receives an operation related to viewing the image, and the composition order is n-1 or earlier each time. The arbitrary image is superimposed on the transparent region of the divided image.

The image processing device according to the sixth aspect of the present invention is the image processing device according to the fourth aspect, and the processor receives the operation related to viewing the image each time, and the arbitrary image which is the basis of superimposition is used. The display form of is converted and superimposed.

The image processing device according to the seventh aspect of the present invention is the image processing device according to any one of the first to sixth aspects, and the processor includes a transmission region in the divided image having the first synthesis order. , The size of the divided image in which the composition order is second with respect to the transparent region is made constant.

The image processing device according to the eighth aspect of the present invention is the image processing device according to any one of the first to sixth aspects, and the processor is transparent in each of the divided images in the nth synthetic order. The area on which the arbitrary image is superimposed is made constant with respect to the area.

The image processing device according to the ninth aspect of the present invention is the image processing device according to any one of the first to eighth aspects, and the processor converts the display form for each of the divided images and synthesizes the same. Generate conversion information including the order and the conversion contents of the display form.

The image processing device according to the tenth aspect of the present invention is the image processing device according to the ninth aspect, and the conversion of each display form of the divided image by the processor is the inversion or rotation of the divided image. ..

The image processing apparatus according to the eleventh aspect of the present invention is the image processing apparatus according to any one of the first to tenth aspects, and the transmission region is the divided image after the transmission processing is applied. The non-transparent areas are set so as not to overlap each other.

The image processing device according to the twelfth aspect of the present invention is the image processing device according to any one of the first to eleventh aspects, and the arbitrary image is a part of the image.

The information processing apparatus according to the thirteenth aspect of the present invention includes a processor, and the processor receives each of the divided images of the images constituting the requested image and conversion information including the synthesis order of the divided images. For each of the received divided images, a divided image before conversion is generated from the content of the conversion information corresponding to the divided image, and each of the divided images before conversion is combined according to the combining order to obtain the image. Is restored, and the process of displaying the restored image is executed.

The computer program according to the 14th aspect of the present invention is set so that the image is divided into N divided images, the composition order of the divided images is determined, and the images are restored when all the divided images are combined. Further, a transmission process in which different transparent regions are applied is executed for each of the divided images according to the composite order, and the split image having the nth composite order (n is 2 or more and N or less) is described. In the transparent region applied by the transparent processing, the region corresponding to a part of the non-transparent region which is not the transparent region applied by the transparent processing for the divided image whose composition order is n-1 or earlier. Arbitrary images are superimposed, conversion information including the order of the transmission processing is generated, and in response to acceptance of an operation related to viewing the images, each of the superimposed images and the conversion information constituting the image are received. Let the computer perform the process of sending.

The computer program according to the fifteenth aspect of the present invention receives each of the divided images of the image constituting the requested image and conversion information including the composition order of the divided images, and for each of the received divided images. From the contents of the conversion information corresponding to the divided image, a divided image before conversion is generated, each of the divided images before conversion is combined according to the composition order to restore the image, and the restored image is obtained. Have the computer perform the display process.

According to the first aspect, by superimposing an arbitrary image on the divided image and generating information on the composition order, the original image is recognized from each divided image as compared with the case where the divided images having the same number of divisions are delivered as they are. The display performance on the client can be improved as compared with the case where the possibility of being displayed is reduced and the number of divisions is increased.

According to the second aspect, it is possible to reduce the possibility that the original image is recognized from the divided image by converting the display form of an arbitrary image and then superimposing the image.

According to the third aspect, it is possible to reduce the possibility that the original image is recognized from the divided image by inverting or rotating an arbitrary image and then superimposing the image.

According to the fourth aspect, since the composition order is not constant, it is possible to reduce the possibility that the original image is combined from the divided image when the composition order is unknown.

According to the fifth aspect, it is possible to reduce the possibility that the original image is recognized from the divided image by superimposing an arbitrary image each time the operation related to viewing is accepted.

According to the sixth aspect, the possibility that the original image is recognized from the divided image can be reduced by converting the display form of an arbitrary image each time the operation related to viewing is accepted.

According to the seventh aspect, by keeping the size of the transparent region in all the divided images constant, it becomes difficult to estimate the composition order.

According to the eighth aspect, by making the size of the region on which an arbitrary image is superimposed with respect to the transparent region constant, it becomes difficult to estimate the composition order.

According to the ninth aspect, it is possible to reduce the possibility that the original image is recognized from the divided image by changing the display form for each of the divided images.

According to the tenth aspect, by inverting or rotating each of the divided images, the possibility of recognizing the original image from the divided images can be reduced.

According to the eleventh aspect, an arbitrary image can be superimposed on the non-transparent region in the divided image of the previous composition order.

According to the twelfth aspect, it is possible to reduce the possibility that the original image is recognized from the divided image by superimposing the original image using the original image.

According to the thirteenth aspect, by receiving the divided image on which an arbitrary image is superimposed and the information of the composition order, the original image is recognized from each divided image as compared with the case where the divided image of the same number of divisions is received as it is. The display performance can be improved as compared with the case where the possibility of being displayed is reduced and the number of divisions is increased.

According to the fourteenth aspect, by superimposing an arbitrary image on the divided image and generating information on the composition order, the original image is recognized from each divided image as compared with the case where the divided images having the same number of divisions are delivered as they are. The display performance on the client can be improved as compared with the case where the possibility of being displayed is reduced and the number of divisions is increased.

According to the fifteenth aspect, by receiving the divided image on which an arbitrary image is superimposed and the information of the composition order, the original image is recognized from each divided image as compared with the case where the divided image of the same number of divisions is received as it is. The display performance can be improved as compared with the case where the possibility of being displayed is reduced and the number of divisions is increased.

According to the present invention, the possibility of recognizing the original image from each divided image is reduced as compared with the case where the divided images having the same number of divisions are delivered as they are, and the client is compared with the case where the number of divisions is increased. The display performance can be improved.

It is a figure which shows the configuration example of an image processing system. It is a block diagram which shows the hardware configuration of an image processing server. It is a block diagram which shows the hardware configuration of a user terminal. It is a block diagram which shows the functional configuration example of an image processing server. It is a block diagram which shows the functional structure example of a user terminal. It is a flowchart which shows an example of the flow of image processing in an image processing server. It is a schematic diagram which shows an example of the processing process of a page image. It is a figure which shows an example of the display image information. It is a figure which shows an example of conversion information. It is a figure which shows another example of the conversion information. It is a flowchart which shows an example of the flow of transmission processing in an image processing server. It is a flowchart which shows an example of the flow of display processing in a user terminal. It is a schematic diagram which shows an example of the display processing process.

Hereinafter, an example of the embodiment of the present invention will be described with reference to the drawings. The same reference numerals are given to the same or equivalent components and parts in each drawing. In addition, the dimensional ratios in the drawings are exaggerated for convenience of explanation and may differ from the actual ratios.

FIG. 1 is a diagram showing a schematic configuration of an image processing system according to the present embodiment. The image processing system shown in FIG. 1 includes an image processing server 10 as an image processing device and a user terminal 20 as an information processing device. The image processing server 10 and the user terminal 20 are connected to each other by a communication line 30 such as the Internet or an intranet. The communication line 30 may be a wired line or a wireless line, and may be a dedicated line used only by a specific user, or is a public line in which the same line is shared by an unspecified number of users. There may be.

The image processing server 10 is an example of an image processing device that stores data including contents that the user wants to view, that is, "contents". The image processing server 10 is constructed by a single computer or a combination of a plurality of computers. Further, the image processing server 10 may be constructed by using cloud computing.

The user terminal 20 is an example of an information processing device that requests the image processing server 10 for the content to be viewed and displays the acquired content on the screen. The user terminal 20 has a reception function for receiving operations, a display function for displaying information, and a communication function for transmitting and receiving data by connecting to a communication line 30, such as a desktop computer, a tablet computer, a smartphone, and a wearable terminal. An information device equipped with is used.

When an operation related to content browsing is performed from the user terminal 20 to the image processing server 10 and a browsing request is transmitted from the user terminal 20 in response to the operation, the image processing server 10 causes the user who requested the content. The content requested to be viewed is transmitted to the terminal 20.

Although the image processing system shown in FIG. 1 includes only one user terminal 20, a plurality of user terminals 20 may be included. Further, the image processing system may include a plurality of image processing servers 10.

FIG. 2 is a block diagram showing a hardware configuration of the image processing server 10.

As shown in FIG. 2, the image processing server 10 includes a CPU (Central Processing Unit) 11, a ROM (Read Only Memory) 12, a RAM (Random Access Memory) 13, a storage 14, an input unit 15, a display unit 16, and a communication interface. It has (I / F) 17. The configurations are connected to each other via a bus 19 so as to be communicable with each other.

The CPU 11 is a central arithmetic processing unit that executes various programs and controls each part. That is, the CPU 11 reads the program from the ROM 12 or the storage 14, and executes the program using the RAM 13 as a work area. The CPU 11 controls each of the above configurations and performs various arithmetic processes according to the program recorded in the ROM 12 or the storage 14. In the present embodiment, the ROM 12 or the storage 14 stores an image processing program that executes image processing on the image data.

The ROM 12 stores various programs and various data. The RAM 13 temporarily stores a program or data as a work area. The storage 14 is composed of a storage device such as an HDD (Hard Disk Drive), an SSD (Solid State Drive), or a flash memory, and stores various programs including an operating system and various data.

The input unit 15 includes a pointing device such as a mouse and a keyboard, and is used for performing various inputs.

The display unit 16 is, for example, a liquid crystal display and displays various types of information. The display unit 16 may adopt a touch panel method and function as an input unit 15.

The communication interface 17 is an interface for communicating with other devices such as the user terminal 20, and for example, standards such as Ethernet (registered trademark), FDDI, and Wi-Fi (registered trademark) are used.

FIG. 3 is a block diagram showing a hardware configuration of the user terminal 20.

As shown in FIG. 3, the user terminal 20 has a CPU 21, a ROM 22, a RAM 23, a storage 24, an input unit 25, a display unit 26, and a communication interface (I / F) 27. Each configuration is communicably connected to each other via a bus 29.

The CPU 21 is a central arithmetic processing unit that executes various programs and controls each unit. That is, the CPU 21 reads the program from the ROM 22 or the storage 24, and executes the program using the RAM 23 as a work area. The CPU 21 controls each of the above configurations and performs various arithmetic processes according to the program recorded in the ROM 22 or the storage 24. In the present embodiment, the ROM 22 or the storage 24 stores an image processing program that executes image processing on the image data.

The ROM 22 stores various programs and various data. The RAM 23 temporarily stores a program or data as a work area. The storage 24 is composed of a storage device such as an HDD, SSD, or flash memory, and stores various programs including an operating system and various data.

The input unit 25 includes a pointing device such as a mouse and a keyboard, and is used for performing various inputs.

The display unit 26 is, for example, a liquid crystal display and displays various types of information. The display unit 26 may adopt a touch panel method and function as an input unit 25.

The communication interface 27 is an interface for communicating with other devices such as the image processing server 10, and for example, standards such as Ethernet (registered trademark), FDDI, and Wi-Fi (registered trademark) are used.

Next, the functional configuration of the image processing server 10 will be described.

FIG. 4 is a diagram showing an example of a functional block diagram in the image processing server 10. The image processing server 10 includes a content conversion unit 110, an image processing unit 120, a reception unit 130, and a transmission unit 140. Further, the image processing unit 120 includes a division unit 121, a superimposition unit 122, a conversion unit 123, and a generation unit 124.

Further, the image processing server 10 includes storage areas of the content storage unit 150, the content information DB 160, the display image information DB 170, the display image storage unit 180, and the conversion information DB 190. The content storage unit 150, the content information DB 160, the display image information DB 170, the display image storage unit 180, and the conversion information DB 190 are provided in, for example, the storage 14.

Usually, "DB" is an abbreviation meaning "database" that manages data in association with a predetermined primary key. However, the "DB" in the present embodiment does not refer to various commercial and non-commercial database applications, but represents a storage area for storing data. Needless to say, a database application may be used to manage a storage area for storing data.

A plurality of contents are stored in advance in the content storage unit 150. The content stored in the content storage unit 150 is transmitted to the user terminal 20 in response to a browsing request transmitted from the user terminal 20. There are no restrictions on the type of content stored in the content storage unit 150, but in the present embodiment, as an example, document data composed of page units will be described as being stored in the content storage unit 150.

The content information DB 160 stores the content information stored in the content storage unit 150. The content information includes, for example, a content ID, a content name, and a content path.

The content ID is an identifier that uniquely identifies the content. When the content ID is specified, one content is selected.

The content name is the title of the content. Information that reminds the user of the content is set in the content name. For example, the file name of the content is set in the content name.

The content path is information representing a place where the content is stored in the content storage unit 150.

That is, when the content ID is specified, the content specified by the content ID can be obtained from the content storage unit 150 by referring to the content information stored in the content information DB 160.

The content conversion unit 110 acquires the content having the specified content ID from the content storage unit 150, and converts the acquired content into a page-based image. When the conversion is completed, the content conversion unit 110 assigns a page number to each converted page-based image, and notifies the image processing unit 120 of the completion of the content conversion. The image processing server 10 handles the content of the content as image data including text and figures. Each content of each page included in the content is also referred to as a "page image". The page image is an example of an image in the present invention.

The image processing unit 120 executes various image processing on the page image converted by the content conversion unit 110.

The division unit 121 divides the page image converted by the content conversion unit 110 into a preset number of images. In the present embodiment, the number to be divided is N (N is an integer of 2 or more). Each image obtained by dividing the page image is also referred to as a "divided image". The division unit 121 assigns an image ID for uniquely identifying the divided images to each of the N divided images. The division unit 121 divides the page image to generate the divided image at the timing when the content conversion end is received from the content conversion unit 110, for example.

Further, the division unit 121 determines the composition order of the N divided images. Then, the division unit 121 executes a transmission process using a transmission pattern that can restore the page image by synthesizing all the divided images according to the composition order for each of the N divided images. The details of the transmission process will be described in detail later.

The superimposing unit 122 is a transparent region after performing transparency processing on the divided image whose composition order is n (n is 2 or more and N or less), and is a non-transparent region of the divided image whose composition order is n-1th or earlier. An arbitrary image is superimposed on the area corresponding to a part of. The arbitrary image may be a part of the original page image itself, or may be a modified display form of a part of the original page image. Further, the arbitrary image may be an image unrelated to the original page image, or may be an image in which the display form of the image unrelated to the original page image is changed.

When superimposing an arbitrary image, the superimposing unit 122 may superimpose after converting the display form of the arbitrary image. The conversion of the display form is, for example, inversion or rotation. By superimposing the image after the superimposing unit 122 converts the display form of an arbitrary image, the possibility of recognizing the original image from the divided image can be further reduced.

The conversion unit 123 is divided by the division unit 121, and after the arbitrary image is superimposed on the superposition unit 122, the conversion unit 123 executes a conversion process of the display form of the divided image. Specifically, the conversion unit 123 performs at least one of a plurality of types of conversion processes provided in advance in the user terminal 20 requesting the content on the divided image. The "conversion process provided in the user terminal 20 in advance" is a conversion that is performed in the user terminal 20 by adding it to the user terminal 20 later, for example, a plug-in module or an add-on module. It is not a process but a conversion process that is provided as standard in the user terminal 20. Specifically, the conversion unit 123 executes at least one of a rotation process and an inversion process as a display form conversion process. The conversion unit 123 stores each converted divided image that has undergone the conversion process in the display image storage unit 180.

The image processing server 10 does not have to execute the conversion process of the display form by the conversion unit 123. However, the possibility that the original image is recognized from the divided image can be further reduced by superimposing the divided image after the conversion unit 123 converts the display form of the divided image.

Further, the conversion process of the display form by the conversion unit 123 may be performed before the arbitrary image is superimposed on the superposition unit 122.

The generation unit 124 generates conversion information including the synthesis order determined by the division unit 121, and stores it in the conversion information DB 190. When the conversion process of the display form by the conversion unit 123 is executed, the generation unit 124 generates conversion information including the content of the conversion process performed by the conversion unit 123 for each divided image in addition to the composition order. Then, it is stored in the conversion information DB 190. Further, the generation unit 124 identifies the content ID of the content including the page image that is the division source of the divided image, the page number assigned to the page image that is the division source of the divided image, and the divided image. Information (hereinafter referred to as "display image information") associated with each of the divided images is stored in the display image information DB 170 for the image ID and the image path representing the storage destination of the divided image in the display image storage unit 180.

When the reception unit 130 receives a viewing request for the content transmitted from the user terminal 20, the reception unit 130 acquires the requested content from the display image storage unit 180 on a page-by-page basis. For example, when the user terminal 20 requests the first page of a specific content, each of the divided images divided from the page image corresponding to the first page is acquired from the display image storage unit 180. Further, the reception unit 130 acquires the conversion information associated with each of the divided images acquired from the display image storage unit 180 from the conversion information DB 190, and sends the acquired divided image and the conversion information to the transmission unit 140.

When the divided image and the converted information are sent from the receiving unit 130, the transmitting unit 140 transmits the divided image and the converted information associated with the divided image to the user terminal 20.

Next, the functional configuration of the user terminal 20 will be described.

FIG. 5 is a diagram showing an example of a functional block diagram in the user terminal 20. The user terminal 20 includes a transmission unit 210, a reception unit 220, a restoration unit 230, and a display unit 240.

The transmission unit 210 transmits a browsing request generated in response to an operation related to browsing of the content by the user to the image processing server 10. The browsing request transmitted from the transmission unit 210 includes the content ID and the page number of the content.

The receiving unit 220 receives from the image processing server 10 a response to the viewing request transmitted by the transmitting unit 210, that is, a divided image and conversion information generated from the content corresponding to the viewing request for which the content ID and page number of the content are specified. Receive. The receiving unit 220 sends the received divided image and conversion information to the restoring unit 230.

The restoration unit 230 uses the divided image and the conversion information received by the receiving unit 220 to generate a divided image (divided image before conversion) before the conversion process is performed by the conversion unit 123 of the image processing server 10.

Then, the restoration unit 230 synthesizes each of the generated divided images before conversion according to the composition order included in the conversion information. The restoration unit 230 restores the page image before being divided by the division unit 121 of the image processing server 10 by synthesizing each of the divided images according to the composition order. The restoration unit 230 sends the restored page image to the display unit 240.

When the display unit 240 receives the page image restored from the restoration unit 230, the display unit 240 displays the page image on the browser 250. As a result, the content requested by the user is displayed on the user terminal 20.

Next, the operation of the image processing server 10 will be described.

FIG. 6 is a flowchart showing an example of the flow of image processing executed by the CPU 11 when new content is stored in the content storage unit 150 of the image processing server 10. The content will be described assuming that it has already been converted into a page image.

The CPU 11 uses two variables i and n when carrying out the flowchart shown in FIG. The variable i is a variable used to determine the number of pages in the page image. Further, the variable n is a variable used for determining the number of processed images when one page image is divided into N divided images. The initial values of the two variables i and n are 0.

The CPU 11 first increases the variable i by one (step S101).

Following step S101, the CPU 11 copies the i-th page of the page image (step S102).

Following step S102, the CPU 11 divides the copied page image of the i-page into N divided images (step S103). An example of dividing into three divided images will be described below.

Following step S103, the CPU 11 determines the compositing order of the N divided images (step S104).

Following step S104, the CPU 11 increments the variable n by one (step S105).

FIG. 7 is a schematic view showing an example of the processing process of the page image 4 in the image processing server 10. In the example of FIG. 7, the CPU 11 divides the page image 4 into three divided images 6A, 6B, and 6C, but if the page image 4 is divided into a plurality of divided images, the number of divisions is not particularly limited. In the following example, the divided images 6A, 6B, and 6C are combined in this order, that is, the divided images 6A are superimposed on the divided image 6B and combined, and the combined image is further superimposed on the divided image 6C and combined. It is assumed that the synthesis order is determined.

As the number of divisions of the page image 4 increases, the amount of data transmitted from the image processing server 10 to the user terminal 20 when the content viewing request is received from the user terminal 20 also increases. The increase in the amount of data leads to an increase in the display time from the request for viewing the content on the user terminal 20 to the display of the content. Therefore, when the upper limit value of the content display time is set in the user terminal 20, or when the user requests improvement in the content display time, for example, the content display time is set to be within the target content display time. The number of divisions of the page image 4 may be set.

The relationship between the number of divisions of the page image 4 and the display time of the content is obtained in advance by an experiment using an actual image processing system or a computer simulation based on the design specifications of the image processing system, and is stored in the storage 14 in advance, for example. You may be. When it is not necessary to distinguish and explain the divided images 6A, 6B, and 6C, each divided image is referred to as "divided image 6".

When the page image 4 is divided into the divided images 6, the CPU 11 may set the area for the page image 4 in a grid pattern, for example. The page image 4 in which the regions are set in a grid pattern is divided into an image composed of a plurality of rectangles. In the example of FIG. 7, the page image 4 is divided into nine rectangles, that is, the partial page images 4A to 4J by setting the area in a grid pattern with respect to the page image 4. Of course, the number of rectangles in one page image 4 is not limited to such an example. In the following description, when it is not necessary to distinguish the partial page images 4A to 4J, each partial page image is referred to as "partial page image 4Z".

Then, the CPU 11 divides the page image 4 into divided images 6 including at least one of the partial page images 4A to 4J, respectively. In the example of FIG. 7, of the nine partial page images 4A to 4J, the divided image 6A including the partial page images 4A, 4D, and 4E, the divided image 6B including the partial page images 4C, 4G, and 4H, and the partial page image. The page image 4 is divided into a divided image 6C including 4B, 4F, and 4J. That is, the CPU 11 divides the page image 4 so that the same partial page images 4A to 4J are not duplicated in the plurality of divided images 6 while keeping the positions of the partial page images 4A to 4J as they are. In other words, the CPU 11 causes the divided images 6A so that the positions of the partial page images 4A to 4J included in the respective divided images 6A, 6B, 6C do not overlap with the other divided images 6A, 6B, 6C. , 6B, 6C.

Following step S105, the CPU 11 executes transparency processing on the divided image whose composition order is nth, which is determined in step S104 (step S106).

In each of the divided images 6A, 6B, and 6C, the CPU 11 sets a region in which the partial page images 4A to 4J are not arranged as a transparent region. The “transparent region” refers to a region having a degree of transparency such that the contents of the other divided image 6 can be visually recognized through the transparent region of one divided image 6 when the divided images 6 are overlapped. Then, in each of the divided images, a region that is not a transparent region becomes a non-transparent region. For example, in the case of the divided image 6A, the regions other than the partial page images 4A, 4D, and 4E are transparent regions, and the partial page images 4A, 4D, and 4E are non-transparent regions. The transparent region may be set to have the same size for all the divided images, or may be set to have different sizes depending on the divided images.

Therefore, when the divided images 6A, 6B, and 6C in the example of FIG. 7 are overlapped, the page image 4 before the division is restored. That is, the CPU 11 executes transparency processing on the divided images 6A, 6B, and 6C so that the page image 4 is restored when each of the divided images 6 is superimposed. An image ID is assigned to each of the divided images 6.

Explaining the above-mentioned division method of the page image 4 from another viewpoint, the CPU 11 generates the page image 4 for the number of divisions by copying the page image 4. When the CPU 11 includes at least one of the partial page images 4Z in each page image 4, the partial page images 4Z included in each page image 4 do not overlap, and all the divided images 6 are superimposed. A transparent area is set in each of the divided images 6 so that the page image 4 before the division is restored.

In the example of FIG. 7, by setting the area in a grid pattern with respect to the page image 4, the partial page image 4Z is divided into a plurality of rectangles, but the shape of the partial page image 4Z is not limited to the rectangle. The shape of the partial page image 4Z may be another shape such as an L-shape or a U-shape. Further, the shape of the partial page image 4Z may be, for example, a jigsaw puzzle shape. Further, there is no regularity in the selection of the partial page images 4A to 4J to be included in each of the divided images 6, and the page images 4 may be different from each other. That is, in the divided images 6A, 6B, 6C of the page image 4 of the first page and the divided images 6A, 6B, 6C of the page image 4 of the second page, the divided images 6A of the respective page images 4 and the divided images 6B When comparing each other and the divided images 6C, transmission regions may be set at different positions.

In the example of FIG. 7, the transparent areas are set at the same positions in the divided images 6A, 6B, 6C of the page image 4 on the first page and the divided images 6A, 6B, 6C of the page image 4 on the second page. There is. That is, the transparent region is set according to the predetermined arrangement pattern of the transparent region for each code of the divided image 6 of “6A”, “6B”, and “6C”. Which of the plurality of types of transparent regions the arrangement pattern is applied to which of the divided images 6 is selected by the CPU 11, but an instruction regarding the arrangement pattern to be applied to the image processing server 10 may be given. ..

Following step S106, the CPU 11 determines whether the current value of the variable n is 2 or more (step S107). As a result of the determination in step S107, if it is determined that the value of the variable n is 2 or more (step S107; Yes), the CPU 11 is the transparent region of the nth divided image and is divided before the (n-1) th division. A part of the non-transparent region of the image is selected (step S108). The CPU 11 may be randomly selected when selecting a part of the non-transparent region of the divided image before the (n-1) th, or may be selected based on a predetermined pattern.

Following step S108, the CPU 11 superimposes an arbitrary image on the transparent region selected in step S108 (step S109). That is, the CPU 11 performs an arbitrary image superimposition process on the divided images having the second and subsequent synthesis orders. If the superimposition processing is performed on all the transparent regions of the nth divided image and the non-transparent regions of the divided images before the (n-1) th division, the first divided image and the Nth divided image are displayed. The size of the transparent region changes drastically, making it easier to guess the composition order. The CPU 11 is the transparent region of the nth divided image, and by performing the superimposition processing only on a part of the non-transparent region of the divided image before the (n-1) th division, it is difficult to guess the composition order. it can.

As a result of the determination in step S107, if it is determined that the value of the variable n is not 2 or more, that is, 1 (step S107; No), the CPU 11 skips the processes of steps S108 and S109. That is, the CPU 11 skips the superimposition processing of arbitrary images for the divided images having the first composition order.

Again, with reference to FIG. 7, the image superimposition processing on the divided image will be described. Since the divided image 6A has the first composite order, the CPU 11 does not execute the image superimposition processing on the divided image 6A. On the other hand, since the divided images 6B and 6C are combined in the second and third order, respectively, the CPU 11 executes the image superimposition processing on the divided images 6B and 6C.

When superimposing an image on the divided image 6B, the CPU 11 selects a part of the non-transparent region of the first divided image 6A and superimposes an arbitrary image on the region of the divided image 6B corresponding to the selected region. To do. In the example of FIG. 7, the superimposed images 5A and 5D are superimposed on the region corresponding to the partial page images 4A and 4D of the divided image 6A. Similarly, when superimposing an image on the divided image 6C, the CPU 11 selects a part of the non-transparent region of the first divided image 6A or the second divided image 6B, and corresponds to the selected region. An arbitrary image is superimposed on the region of the divided image 6C. In the example of FIG. 7, the superimposed images 5C and 5G are superimposed on the region corresponding to the partial page images 4C and 4G of the divided image 6B.

When superimposing an image on the divided image 6, the CPU 11 may make the region on which an arbitrary image is superimposed on each transparent region of the divided image 6 constant. By making the region on which an arbitrary image is superimposed on each transparent region of the divided image 6 constant, it is possible to make it difficult to guess the original image from the divided image after superimposition or to make it difficult to guess the composition order. ..

Further, since the image is not superimposed on the divided image having the first composite order, if the transparent area is larger than that of the other divided images, which of the divided images has the first composite order even if there is no information on the composite order. It becomes easy to guess. Therefore, the CPU 11 makes the size of the non-transparent region in the divided image having the first compositing order equal to the size of the non-transparent region after the arbitrary images in the divided images having the second and subsequent compositing orders are superimposed. Alternatively, the transparent region may be set so that there is no large difference in the size of the non-transparent region.

Subsequently, the CPU 11 performs at least one of rotation processing and inversion processing on the divided image 6 to convert the display form of the divided image 6 (step S110). Here, the divided image 6 whose display form is converted is a divided image in which the superimposition processing is not performed if it is the first divided image, and after the superimposing processing is performed in the case of the second and subsequent divided images. It is a divided image of. In the present embodiment, the CPU 11 performs the display form conversion process after the superimposition process, but the superimposition process may be performed after the display form conversion process.

The CPU 11 may randomly select whether the divided image 6 is subjected to the rotation process, the inversion process, or both the rotation process and the inversion process. Further, the rotation angle in the rotation process and the reversal direction in the reversal process may also be randomly selected by the CPU 11.

As a result, in the example of FIG. 7, the divided image 6A of the page image 4 of the first page is rotated 180 degrees to the right and inverted in the left-right direction, and the page image 4 of the first page is divided. Image 6B is subjected to a rotation process of 270 degrees to the right. Further, the divided image 6C of the page image 4 on the first page is subjected to a rotation process of 90 degrees to the right and an inversion process in the vertical direction.

Further, the split image 6A of the page image 4 on the second page is inverted in the left-right direction, and the split image 6B of the page image 4 on the second page is rotated 180 degrees to the right and left and right. Direction reversal processing is being carried out. Further, the divided image 6C of the page image 4 on the second page is rotated by 90 degrees to the right. As a result, the page image 4 before division is less likely to be recognized even if the divided images 6A, 6B, and 6C are superimposed, as compared with the case where the conversion process in step S110 is not performed.

Following step S110, the CPU 11 registers each of the divided images after the superimposition processing and the conversion processing in the display image storage unit 180, and registers each information of the divided images in the display image information DB 170 as display image information. (Step S111). FIG. 8 is a diagram showing an example of display image information stored in the display image information DB 170. As shown in FIG. 8, the display image information is generated for each divided image and stored in the display image information DB 170.

Following step S111, the CPU 11 generates conversion information for each divided image 6 that records the composition order of each divided image 6 and the content of the conversion processing performed on each divided image 6, and the conversion information. Register in DB190 (step S112). The content of the conversion process recorded in the conversion information may be the content of the conversion process executed in step S110, or may be the content of the process of returning the divided image 6 subjected to the conversion process in step S110 to the divided image 6 before conversion. .. The process of returning the divided image 6 from which the conversion process has been performed to the divided image 6 before the conversion is also referred to as "inverse conversion process".

For example, in the case of the example of FIG. 7, the inverse conversion process for the divided image 6A of the page image 4 on the first page is a rotation process of 180 degrees to the left and a reversal process in the left-right direction, and the page image 4 of the first page. The inverse conversion process for the divided image 6B is a rotation process of 270 degrees to the left. Further, the inverse conversion process for the divided image 6C of the page image 4 on the first page is a rotation process of 90 degrees to the left and an inversion process in the vertical direction.

The reverse conversion process for the split image 6A of the page image 4 on the second page is a left-right reversal process, and the reverse conversion process for the split image 6B of the page image 4 on the second page is a rotation of 180 degrees to the left. It is a process and a reversal process in the left-right direction. Further, the inverse conversion process for the divided image 6C of the page image 4 on the second page is a rotation process of 90 degrees to the left.

The rotation process and the inversion process are examples of conversion processes provided in the user terminal 20 in advance as processes performed by the browser 250 of the user terminal 20.

FIG. 9 is a diagram showing an example of conversion information stored in the conversion information DB 190. As shown in FIG. 9, the conversion information includes the image ID of the divided image 6, the content of the inverse conversion process for the conversion process performed in step S110, and the composition order. However, the content of the conversion information is not limited to this, and for example, information in which the image ID of the divided image 6 and the content of the conversion process performed in step S110 are associated with each other may be used as the conversion information.

FIG. 10 is a diagram showing an example of conversion information stored in the conversion information DB 190. If the content of the conversion process performed in step S110 is known, the content of the inverse conversion process can be obtained. As described above, the conversion information may be any information that restores the divided image 6 that has been converted in step S110 to the divided image before conversion.

Following step S112, the CPU 11 determines whether the variable n is equal to the number of divisions N (step S113). When the variable n is not equal to the number of divisions N, that is, when the unprocessed divided image remains (step S113; No), the CPU 11 returns to the processing of step S105. On the other hand, if the variable n is equal to the number of divisions N, that is, if no unprocessed divided images remain (step S113; Yes), the CPU 11 subsequently determines whether the variable i is equal to the number of pages (step S113; Yes). Step S114). If the variable i is not equal to the number of pages, that is, if unprocessed page images remain (step S114; No), the CPU 11 returns to the process of step S101. On the other hand, when the variable i is equal to the number of pages, that is, when no unprocessed page image remains (step S114; Yes), the CPU 11 ends a series of processes.

By executing the series of processes shown in FIG. 6, the CPU 11 has a possibility of recognizing the original image from each divided image as compared with the case where the divided images having the same number of divisions are transmitted to the user terminal 20 as they are. Can be lowered.

In the process shown in FIG. 6, each time an operation related to viewing the content from the user terminal 20 is accepted, the process from the generation of the divided image to the conversion of the display form is performed, but the present invention is not limited to this example. For example, the CPU 11 may generate a divided image and perform transparency processing in advance, and when it receives a content viewing request from the user terminal 20, it may perform an arbitrary image superimposing process on the divided image generated in advance. Good. Further, for example, the CPU 11 generates in advance a divided image in which an arbitrary image is superimposed on the image after the transparency processing every day, and responds to the acceptance of an operation related to viewing the content from the user terminal 20. The divided image may be transmitted.

Next, with reference to FIG. 11, the operation of the image processing server 10 when the content viewing request is received from the user terminal 20 will be described in detail.

FIG. 11 is a flowchart showing an example of a flow of transmission processing executed by the CPU 11 when a content viewing request is received from the user terminal 20. It is assumed that the browsing request includes the content ID and the page number of the content to be displayed on the user terminal 20. That is, the user terminal 20 requests the content on a page-by-page basis.

The transmission processing program that defines the transmission processing is stored in advance in, for example, the ROM 12 or the storage 14 of the image processing server 10. The CPU 11 of the image processing server 10 reads the transmission processing program stored in the ROM 12 or the storage 14 and executes the transmission processing.

Upon receiving the content browsing request from the user terminal 20, the CPU 11 refers to the display image information stored in the storage 14, and the image of the divided image 6 constituting the page specified by the content ID and the page number of the browsing request. Acquire the ID and the image path (step S201). In the example of FIG. 8, for example, when the content ID = "DOC-001" and the page number = "1" are specified, the CPU 11 is "IMG-001", "IMG-002", and "IMG-003" respectively. The image ID and the image paths "IMG / IMG-001", "IMG / IMG-002", and "IMG / IMG-003" associated with each image ID are acquired.

Following step S201, the CPU 11 selects one image ID from the image IDs acquired in step S201 (step S202).

Following step S202, the CPU 11 refers to the image path of the image ID selected in step S201 and acquires the divided image 6 associated with the image ID from the storage 14 (step S203).

Following step S203, the CPU 11 refers to the conversion information shown in FIG. 9 or FIG. 10 and acquires the conversion information associated with the image ID selected in step S202 (step S204). For example, when the image ID selected in step S202 is "IMG-001", the CPU 11 uses the conversion information of FIG. 9 to indicate that the image ID and contents are IMG-001 "and" rotation: 180 degrees to the left, inversion: left and right, respectively. Order: Get conversion information of "1".

Following step S204, the CPU 11 generates response data including the divided image 6 acquired in step S203 and the conversion information acquired in step S204 (step S205). The CPU 11 includes the number of divisions of the page image 4 corresponding to the page number of the content specified in the browsing request in the response data first generated after receiving the browsing request. Specifically, when the page number = "1" of the content ID = "DOC-001" is requested in the browsing request, in the example of the display image information of FIG. 8, the content ID = "DOC-001" and the page. Since the number = "1" includes three divided images 6, the CPU 11 sets the number of divisions to "3".

Response data can be generated for each divided image 6. Therefore, by including the number of divisions in the response data generated first, the user terminal 20 can grasp the number of response data transmitted from the image processing server 10 to the user terminal 20 in response to the browsing request.

Following step S205, the CPU 11 controls the communication I / F 17 and transmits the response data generated in step S205 to the user terminal 20 (step S206).

Following step S206, the CPU 11 determines whether or not there is an image ID that has not yet been selected in step S202 from the image IDs acquired in step S201 (step S207). If there are unselected image IDs (step S207; Yes), the CPU 11 returns to the process of step S202, selects the unselected image IDs, and steps S202 to S206 until all the image IDs are selected. Repeat the process of. If there is no unselected image ID (step S207; No), the CPU 11 ends a series of processes.

By executing the series of processes shown in FIG. 12, the CPU 11 outputs the response data including the divided image 6 constituting the page image 4 specified in the browsing request and the conversion information to the user terminal 20 for each divided image 6. Send to.

Next, the operation of the user terminal 20 will be described in detail with reference to FIG.

FIG. 12 is a flowchart showing an example of the flow of display processing executed by the user terminal 20. FIG. 12 shows an example of the flow of display processing executed by the CPU 21 when a browsing request specifying the content ID and page number of the content to be displayed on the user terminal 20 is transmitted from the user terminal 20 to the image processing server 10. It is shown.

The browsing program that defines the display process is stored in advance in, for example, the ROM 22 of the user terminal 20. The CPU 21 of the user terminal 20 reads the browsing program stored in the ROM 22 and executes the display process. In addition, the browsing program realizes the display process by using the function of the browser 250. That is, the browsing program is a program that runs on the browser 250. When calling the function of the browser 250 from the browsing program, the browsing program calls the interface function prepared for each function to be used.

The CPU 21 determines whether or not the response data of the page image 4 corresponding to the page number of the content specified in the browsing request has been received from the image processing server 10 for the number of divisions (step S301). The number of response data received by the user terminal 20 is obtained from the number of divisions included in the response data first received after transmitting the browsing request.

If the response data has not been received for the number of divisions (step S301; No), the process of step S301 is repeatedly executed to monitor the reception status of the response data. On the other hand, when the response data is received for the number of divisions (step S301; Yes), the CPU 21 stores the divided image 6 and the conversion information included in the received response data in the RAM 23 in association with each response data. That is, each divided image 6 and conversion information constituting the page image 4 of the page specified in the browsing request are stored in the RAM 23.

Subsequently, the CPU 21 selects any one of the divided images 6 received in step S301 (step S302).

Following step S302, the CPU 21 acquires conversion information corresponding to the divided image 6 selected in step S302 from the RAM 23 (step S303).

The divided image 6 received by the user terminal 20 is the divided image 6 after the conversion process is performed by the image processing server 10. Therefore, following step S303, the CPU 21 uses the conversion information acquired in step S303 to generate the divided image 6 before conversion from the selected divided image 6 (step S304).

Specifically, when the conversion information acquired from the RAM 23 is the conversion information including the content of the inverse conversion process as shown in FIG. 9, the CPU 21 selects the content of the conversion process included in the conversion information as a divided image. The divided image 6 before conversion is generated by carrying out the process as it is in 6. Further, when the acquired conversion information includes the content of the conversion process executed by the image processing server 10 as shown in FIG. 10, the CPU 21 has selected the inverse conversion process for the content of the conversion process included in the conversion information. By performing this on the divided image 6, the divided image 6 before conversion is generated.

FIG. 13 is a diagram showing an example of the divided image 6 before conversion generated from each divided image 6 using the conversion information. The divided images 6A, 6B, and 6C in FIG. 13 are the divided images 6A, 6B, and 6C divided from the page image 4 on the first page of FIG. 7.

The divided image 6A before conversion is generated by the CPU 21 performing a rotation process of 180 degrees to the left and an inversion process in the left-right direction with respect to the divided image 6A of FIG. The CPU 21 rotates the divided image 6B of FIG. 13 by 270 degrees to the left to generate the divided image 6B before conversion. The divided image 6C before conversion is generated by the CPU 21 performing a rotation process of 90 degrees to the left and an inversion process in the vertical direction with respect to the divided image 6C of FIG.

The rotation process and the inversion process are conversion processes provided in the browser 250 in advance. When converting the received divided image 6 into the divided image 6 before conversion, the CPU 21 uses the rotation process and the inversion process provided in advance in the browser 250.

Whether the acquired conversion information includes the content of the inverse conversion process or the content of the conversion process performed by the image processing server 10 may be determined in advance in the image processing system. Further, the identification information of the conversion process indicating whether the acquired conversion information includes the content of the inverse conversion process or the content of the conversion process executed by the image processing server 10 may be included in the conversion information.

When the conversion information includes the identification information of the conversion process, the interpretation of the content of the conversion process in the conversion information may be changed for each conversion information. For example, the conversion information associated with the divided image 6A describes the content of the inverse conversion process, and the conversion information associated with the divided image 6B describes the content of the conversion process executed by the image processing server 10. You may. By changing the interpretation of the content of the conversion process in the conversion information for each conversion information, the information that serves as a clue for generating the divided image 6 before conversion loses regularity. Therefore, when the divided image 6 before conversion is generated from only the divided image 6 by the user terminal 20, the conversion content included in the conversion information is converted as compared with the case where the conversion content is unified according to the same interpretation. It becomes difficult to correctly generate the previous divided image 6.

Following step S304, the CPU 21 determines whether or not there is an unselected divided image 6 not selected in step S302 among the divided images 6 received in step S301 (step S305). If the unselected divided image 6 is present (step S305; Yes), the CPU 21 returns to the process of step S302. In step S302, the CPU 21 selects an unselected divided image 6 and repeatedly executes the processes of steps S302 to S304 until all the received divided images 6 are selected. As a result, the divided image 6 before conversion is generated for each of the received divided images 6.

On the other hand, when the unselected divided image 6 does not exist (step S305; No), the CPU 21 synthesizes each of the divided images 6 before conversion based on the combining order included in the conversion information acquired from the RAM 23. (Step S306). The page image 4 is generated by the CPU 21 synthesizing each of the divided images 6 before conversion based on the synthesizing order.

Following step S306, the CPU 21 displays the page image 4 obtained by synthesizing each of the divided images 6 on the browser 250 (step S307).

As shown in FIG. 7, in the divided image 6 before conversion, when all the divided images 6 constituting the page image 4 are superimposed according to the composition order, the page image 4 before the division is restored. A transparent region is set in the divided image 6. Then, as shown in FIG. 7, an arbitrary image is superimposed on a part of the transparent region of the divided image 6 whose composition order is the second and subsequent. Therefore, as shown in FIG. 13, the page image corresponding to the page number of the content requested to the image processing server 10 in the browsing request only when the user terminal 20 synthesizes the images according to the composition order set by the image processing server 10. 4 will be restored. In other words, when the user terminal 20 synthesizes the images in a composition order different from the composition order set in the image processing server 10, the page image 4 and the divided image in the image processing server 10 are combined as shown in FIG. The superimposed image will remain.

A display process by the user terminal 20 is performed by a series of processes shown in FIG.

When displaying the page image 4 by synthesizing each of the divided images 6 before conversion in step S306, the CPU 21 may arrange a watermark image on the uppermost layer of the superimposed divided images 6. The "watermark image" is an image in which an area other than the image portion is set as a transparent area. The content of the image portion in the watermark image may be any, for example, the user name of the user who requested the content from the image processing server 10, the name of the right holder of the content, and the identification of the user terminal 20 displaying the content. A name or a warning message for notifying the prohibition of secondary use of the page image 4 such as "reproduction prohibited" is used.

By arranging the watermark image on the uppermost layer of the superimposed divided image 6, the CPU 21 does not display the watermark image even when the page image 4 is photographed by a photographing device such as a camera or screen-captured. By comparison, the content can be protected.

In each of the above embodiments, various processors other than the CPU may execute the image processing executed by the CPU reading the software (program). In this case, the processor includes a PLD (Programmable Logic Device) whose circuit configuration can be changed after manufacturing an FPGA (Field-Programmable Gate Array), an ASIC (Application Specific Integrated Circuit), and the like. An example is a dedicated electric circuit or the like, which is a processor having a circuit configuration designed exclusively for the purpose. Further, the image processing may be executed by one of these various processors, or a combination of two or more processors of the same type or different types (for example, a plurality of FPGAs, and a combination of a CPU and an FPGA, etc.). ) May be executed. Further, the hardware structure of these various processors is, more specifically, an electric circuit in which circuit elements such as semiconductor elements are combined.

Further, in each of the above embodiments, the mode in which the image processing program is stored (installed) in the ROM or the storage in advance has been described, but the present invention is not limited to this. The program may be provided in a form recorded on a recording medium such as a CD-ROM (Compact Disk Read Only Memory), a DVD-ROM (Digital Versaille Disk Read Only Memory), and a USB (Universal Serial Bus) memory. Further, the program may be downloaded from an external device via a network.

Further, the operation of the processor in each of the above embodiments may be performed not only by one processor but also by a plurality of processors existing at physically separated positions in cooperation with each other. Further, the order of each operation of the processor is not limited to the order described in each of the above embodiments, and may be changed as appropriate.

10 Image processing server 20 User terminal 30 Communication line

Claims (15)

Equipped with a processor
The processor
Divide the image into N divided images and
The composition order of the divided images is determined,
A transparency process in which different transparent regions are applied, which is set so that the image is restored when all the divided images are combined, is executed for each of the divided images according to the combining order.
The transparent region applied by the transmission process to the divided image whose composition order is n (n is 2 or more and N or less), and the transmission process is applied to the divided image whose composition order is n-1th or earlier. An arbitrary image is superimposed on a region corresponding to a part of the non-transparent region that is not the transparent region applied in.
Generate conversion information including the order of the transparent processing,
In response to the acceptance of the operation related to viewing the image, each of the superimposed images constituting the image and the conversion information are transmitted.
An image processing device that performs processing. The processor converts and superimposes the display form of the arbitrary image which is the basis of superimposition when superimposing the arbitrary image on the transparent region of the divided image whose composition order is nth. The image processing unit described in 1. The image processing apparatus according to claim 2, wherein the processor inverts or rotates the arbitrary image as a conversion of a display form. The image processing apparatus according to claim 1, wherein the processor determines the composition order each time an operation related to viewing the image is accepted. The image processing according to claim 4, wherein the processor superimposes the arbitrary image on the transparent region of the divided image whose composition order is n-1 or earlier each time the operation related to viewing the image is accepted. apparatus. The image processing device according to claim 4, wherein the processor converts and superimposes the display form of the arbitrary image that is the basis of superimposition each time an operation related to viewing the image is accepted. The processor makes the size of the transparent region in the divided image having the first composite order constant and the size of the transparent region in the divided image having the second composite order constant, any one of claims 1 to 6. The image processing unit according to the section. The image processing device according to any one of claims 1 to 6, wherein the processor makes a region on which the arbitrary image is superimposed constant with respect to a transmission region in each of the divided images having the nth synthesis order. .. The image processing device according to any one of claims 1 to 8, wherein the processor converts a display form for each of the divided images and generates conversion information including the synthesis order and the conversion contents of the display form. .. The image processing apparatus according to claim 9, wherein the conversion of each display form of the divided image by the processor is inversion or rotation of the divided image. The image processing apparatus according to any one of claims 1 to 10, wherein the transparent region is set so that the non-transparent region does not overlap in each of the divided images after the transparent processing is applied. The image processing apparatus according to any one of claims 1 to 11, wherein the arbitrary image is a part of the image. Equipped with a processor
The processor
Upon receiving each of the divided images of the image constituting the requested image and the conversion information including the composition order of the divided images,
For each of the received divided images, a divided image before conversion is generated from the contents of the conversion information corresponding to the divided image, and each of the divided images before conversion is combined according to the combining order to obtain the image. Restore and
Display the restored image,
An information processing device that executes processing. Divide the image into N divided images and
The composition order of the divided images is determined,
A transparency process in which different transparent regions are applied, which is set so that the image is restored when all the divided images are combined, is executed for each of the divided images according to the combining order.
The transparent region applied by the transmission process to the divided image whose composition order is n (n is 2 or more and N or less), and the transmission process is applied to the divided image whose composition order is n-1th or earlier. An arbitrary image is superimposed on a region corresponding to a part of the non-transparent region that is not the transparent region applied in.
Generate conversion information including the order of the transparent processing,
In response to the acceptance of the operation related to viewing the image, each of the superimposed images constituting the image and the conversion information are transmitted.
A computer program that lets a computer perform processing. Upon receiving each of the divided images of the image constituting the requested image and the conversion information including the composition order of the divided images,
For each of the received divided images, a divided image before conversion is generated from the contents of the conversion information corresponding to the divided image, and each of the divided images before conversion is combined according to the combining order to obtain the image. Restore and
Display the restored image,
A computer program that lets a computer perform processing.

Images