JP4219725B2 - Image display method, image display system, image data conversion device, and image display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an image display method, an image display system, an image data conversion device, and an image display device that suppress image capture by screen capture.
[0002]
[Prior art]
A screen capture function is a function that can obtain all or part of an image displayed on a display on a personal computer as image data. Conventionally, in order to prevent unauthorized copying of images handled on a personal computer, it is generally recognized that a countermeasure for a screen capture function of a personal computer application is necessary. This is because the data obtained by screen capture is in the form of a universal format that can be reprocessed and reused, and it is difficult to prevent unauthorized duplication of images thereafter.
[0003]
As a method for preventing screen capture, a technique for preventing a screen capture function operating on a personal computer from operating is known (for example, see Patent Document 1).
[0004]
[Patent Document 1]
JP 2001-75696 A
[0005]
[Problems to be solved by the invention]
However, the technique disclosed in Patent Document 1 is an effective means for preventing screen capture, but even if the screen capture function is prevented, complete original image information is developed in the video memory. Therefore, by constructing a means for directly reading software or hardware for accessing the video memory, the original image information may be extracted and copied illegally as it is.
[0006]
Therefore, a technique for preventing correct information from being obtained even if screen capture functions depending on the format of the image format itself has a new effect on preventing unauthorized duplication of images.
[0007]
The means for preventing illegal duplication of images as described above is required to be easily and widely introduced in constructing a system for distributing images.
[0008]
Therefore, in view of the above-described conventional problems, the present invention provides an image display method, an image display system, an image data conversion apparatus, and an image display apparatus that are not limited to operations on a specific OS and that do not effectively operate screen capture. The purpose is to do.
[0009]
[Means for Solving the Problems]
  In order to solve the above-described problem, the first aspect of the present invention provides:
  An image that is visually synthesized and displayed substantially the same as the original image by decomposing the original image, which is a still image, into a plurality of still images, and displaying the decomposed still images sequentially and repeatedly at a predetermined timing. Display method,
  Conversion source image data having information for one screen different from the original image;The conversion source image data andEach difference data with the data of each decomposed still image, and
  In the image display method, the plurality of decomposed still images are created from the generated conversion source image data and the difference data, and the created plurality of still images are sequentially and repeatedly displayed at the predetermined timing.
[0010]
  The second aspect of the present invention
  An original image data storage device for storing an original image which is a still image;
  An image data conversion device that visually synthesizes the original image when it is sequentially displayed repeatedly at a predetermined timing and decomposes it into a plurality of still images that look substantially the same as the original image;
  An image display system comprising: an image display device that sequentially and repeatedly displays the plurality of still images decomposed by the image data conversion device at the predetermined timing;
  The image data conversion device, conversion original image data having information for one screen different from the original image,The conversion source image data andEach difference data with the data of each decomposed still image, and
  The image display device creates the plurality of decomposed still images from the conversion source image data generated by the image data conversion device and the difference data, and the created plurality of still images are generated at the predetermined timing. This is an image display system that repeatedly displays images sequentially.
[0011]
  The third aspect of the present invention provides
  The image data conversion device and the image display device are connected by a transmission path,
  In the image data converterGenerationSaidConversion source image data and each difference dataIs the image display system according to the second aspect of the present invention, which is transmitted to the image display device through the transmission path.
[0012]
The fourth invention relates to
The original image data storage device is an image display system according to the second or third aspect of the present invention, which is the same device as the image data conversion device.
[0013]
  The fifth aspect of the present invention relates to
  Storing an original image which is a still image;
  An image data conversion step for visually decomposing the original image into a plurality of still images that are visually combined and displayed substantially the same as the original image when sequentially displayed at a predetermined timing;
  An image display method comprising: an image display step of sequentially and repeatedly displaying the plurality of decomposed still images at the predetermined timing,
  In the image data conversion step, conversion source image data having information for one screen different from the original image,The conversion source image data andEach difference data with the data of each decomposed still image, and
  In the image display step, the plurality of decomposed still images are created from the conversion source image data generated in the image data conversion step and the difference data, and the created still images are generated at the predetermined timing. This is an image display method in which images are displayed repeatedly in sequence.
[0014]
  The sixth invention relates to
  Original image data receiving means for receiving original image data from an original image data storage device for storing an original image which is a still image;
  Image data conversion means for visually recombining the received original image data when it is sequentially displayed repeatedly at a predetermined timing and decomposing it into a plurality of still image data that looks substantially the same as the original image. Image data conversion device,
  The image data conversion means includes conversion source image data having information for one screen different from the original image,The conversion source image data andIt is an image data conversion device that generates difference data with each decomposed still image data.
[0015]
  The seventh invention relates to
  The original image, which is a still image, is decomposed from an image data conversion device that is visually synthesized when it is sequentially displayed repeatedly at a predetermined timing and is substantially the same as the original image, and decomposes into a plurality of still images. Disassembled data receiving means for receiving the plurality of still image data;
  An image display device comprising image display means for sequentially displaying the received plurality of still image data at the predetermined timing,
  The decomposed data receiving means, instead of the plurality of decomposed still image data, conversion source image data having information for one screen different from the original image,The conversion source image data andReceiving each difference data with each decomposed still image data,
  The image display means creates the plurality of decomposed still image data from the conversion source image data and each difference data, and repeatedly displays the created plurality of still image data at the predetermined timing. An image display device.
[0016]
The eighth invention relates to
The decomposed still image data is
In the image data conversion device according to the sixth aspect of the present invention, the data of one or more specific pixels is different from the data of the pixels at the same position in the original image data.
[0017]
The ninth invention relates to
The data of the one or more specific pixels of the plurality of still image data decomposed different from the data of the pixels at the same position of the original image data,
The image data conversion apparatus according to the eighth aspect of the present invention is different in brightness from pixel data at the same position of the original image data.
[0018]
The tenth aspect of the present invention is
The data of the one or more specific pixels of the plurality of still image data decomposed different from the data of the pixels at the same position of the original image data,
In the image data conversion device according to the eighth or ninth aspect of the present invention, at least one of hue, saturation, and brightness is different from pixel data at the same position in the original image data.
[0019]
The eleventh aspect of the present invention is
The pixel data of the plurality of decomposed still image data different from the pixel data at the same position of the original image data,
The image data conversion device according to any of the eighth to tenth aspects of the present invention, which is pixel data of all the plurality of still image data.
[0020]
The twelfth aspect of the present invention is
The data of the specific plurality of pixels of the plurality of still image data decomposed, which is different from the data of the pixels at the same position of the original image data,
An image data conversion apparatus according to the eighth aspect of the present invention, in which data of two or more pixels is the same.
[0023]
  First13The present invention is
  Furthermore, it is an image display device according to a seventh aspect of the present invention, further comprising an image display interval setting unit capable of arbitrarily setting a timing at which the received plurality of still image data are sequentially and repeatedly displayed.
[0024]
  First14The present invention is
  Furthermore, a drawing performance input means for inputting drawing performance information;
  Image display information setting means for performing settings related to display based on the drawing performance information.13This is an image display device of the present invention.
[0025]
  First15The present invention is
  The image display system of the second aspect of the present invention,
Original image data storage device for storing original image as still image,
  An image data converter that visually synthesizes the original image when it is sequentially and repeatedly displayed at a predetermined timing and decomposes it into a plurality of still images that look substantially the same as the original image;
  A program for causing a computer to function as an image display device that sequentially and repeatedly displays the plurality of still images decomposed by the image data conversion device at the predetermined timing.
[0026]
  First16The present invention is
  Of the image data conversion apparatus of the sixth aspect of the present invention,
  Original image data receiving means for receiving original image data from an original image data storage device for storing an original image which is a still image;
  A computer as image data conversion means for visually recombining the received original image data when it is sequentially displayed repeatedly at a predetermined timing and decomposing it into a plurality of still image data that looks substantially the same as the original image Is a program for making
[0027]
  First17The present invention is
  Of the image display device of the seventh invention,
  The original image, which is a still image, is decomposed from an image data conversion device that is visually synthesized when it is sequentially displayed repeatedly at a predetermined timing and is substantially the same as the original image, and decomposes into a plurality of still images. Disassembled data receiving means for receiving the plurality of still image data;
  A program for causing a computer to function as image display means for sequentially displaying the received plurality of still image data repeatedly at the predetermined timing.
[0028]
  First18The present invention is
  First15Thru17Any of the programs of the present inventionRecordThis is a recording medium that can be used by a computer.
[0029]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0030]
(Embodiment 1)
FIG. 1 shows a block diagram of the image display system of the first embodiment.
[0031]
The image display system 1 according to the first embodiment includes an original image data storage device 2, an image data conversion device 3, and an image display device 4, all of which are personal computers.
[0032]
The original image data storage device 2 stores original image data 16 that is a still image. The original image data storage device 2 includes an original image data input unit 21, an original image data storage unit 22, and an original image data transmission unit 23.
[0033]
The image data conversion device 3 is connected to the original image data storage device 2 via a transmission path, acquires the original image data 16 from the original image data storage device 2 via the transmission path, and performs a division process on the original image data 16. Do. The image data converter 3 includes original image data receiving means 31, image data converting means 32, divided data storage means 33, and divided data transmitting means 34.
[0034]
The image display device 4 is connected to the image data conversion device 3 by a transmission path. In the first embodiment, the Internet 60 is connected as an example of the transmission path. The image display device 4 acquires image data obtained by dividing the original image data 16 by the image data conversion device 3 from the image data conversion device 3 via the Internet 60.
[0035]
The image display device 4 includes image display means 42 for displaying the divided image data acquired by the divided data receiving means 41. The image display unit 42 includes an image display control unit 50 and an image display unit 51. The image display unit 51 is a part such as a display that displays an image so that the image can be actually seen. In addition, the image display device 4 includes an information input unit 43 that acquires information such as image display intervals and setting parameters of the image display unit. An image display interval setting unit 44 and an image display information setting unit 45 are provided that acquire necessary information from the information input unit 43 and pass control information to the image display unit 42.
[0036]
Next, the operation of the image display system 1 according to the first embodiment will be described.
[0037]
First, the original image data storage device 2 acquires the original image data 16 by the original image data input means 21. The method for obtaining the original image data 16 is based on a general-purpose input interface of a personal computer such as a floppy disk, a memory card, or communication. The original image data input means 21 stores the original image data 16 in the original image data storage means 22. The original image data storage means 22 is general-purpose storage means possessed by a personal computer, such as a hard disk or memory. Then, in response to a request from the image data conversion device 3 connected via a communication line, the original image data transmission unit 23 sends the original image data 16 stored in the original image data storage unit 22 to the image data conversion device 3. Send.
[0038]
The original image data receiving means 31 of the image data conversion device 3 receives and acquires the original image data 16 from the original image data storage device 2 via a communication line. Then, the acquired original image data 16 is divided into a plurality of still image data by the image data conversion means 32. A method of dividing the original image data 16 into a plurality of still image data will be described later. The divided still image data is stored in the divided data storage means 33. A method for saving data of a plurality of divided still images when stored in the divided data storage unit 33 will be described later. Then, in response to a request for receiving the divided still image data from the image display device 4, the divided data transmission unit 34 transmits the plurality of divided still images stored in the divided data storage unit 33 via the Internet 60. Data is transmitted to the image display device 4.
[0039]
In the image display device 4, the divided data receiving means 41 receives the still image data divided from the image data conversion device 3. Then, the image display control unit 50 acquires the still image data divided from the divided data receiving unit 41 and causes the image display unit 51 to display the divided still image data repeatedly in order at predetermined time intervals. The divided still image data is data that is visually combined to be seen as the original image data 16 by being repeatedly displayed in order at predetermined time intervals. Therefore, a display substantially the same as the original image data 16 can be seen on the image display unit 51. A method for continuously drawing the divided still image data by the image display control means 50 will be described later.
[0040]
  Further, the image display interval setting means 44 provided in the image display device 4 obtains the information from the information input means 43 when the setting information of the repetition interval of the still image data is input to the information input means 43, and The display control unit 50 is notified of the setting contents. Then, the image display control unit 50 sets the setting contents in the image display unit 51. Similarly, when the image display information setting unit 45 obtains information about display rendering performance such as screen resolution from the information input unit 43, the image display information setting unit 45 notifies the image display control unit 50 of the setting contents. Then, the image display control means 50 converts the setting contents into an image.displayPart 51. Details of the image display method in consideration of display characteristics by the image display information setting means 45 will be described later. The information input means 43 in this case is an example as a drawing performance input means of the present invention.
[0041]
Next, a method for dividing the original image data 16 into a plurality of still image data in the above-described image data conversion means 32 will be described with reference to FIGS.
[0042]
FIG. 2 shows a method of dividing a plurality of still images into data in the first embodiment. In the description of the first embodiment, in all the descriptions, as an example of the original image division, the number of image divisions is 3, and the number of pixels to be converted into information different from the original image is 1.
[0043]
In FIG. 2, 100 is an original image A, 101 is an image A1 having a difference from the original image, 102 is an image A2 having a difference from the original image, and 103 is an image A3 having a difference from the original image. 1010 is a pixel to be converted on the original image 100, 1011 is a difference pixel between the pixel 1010 of the original image 100 and the image 101, 1012 is a difference pixel between the pixel 1010 of the original image 100 and the image 102, and 1013 is the original pixel. A difference pixel between the pixel 1010 of the image 100 and the image 103 is shown.
[0044]
FIG. 3 shows details of the division processing portion into the data of a plurality of still images in the original image data receiving means 31, the image data converting means 32, and the divided data storage means 33 of the image data converting apparatus 3 in the first embodiment. It is the functional block diagram shown. The original image obtaining unit 70 in FIG. 3 corresponds to the original image data receiving unit 31 in FIG. Also, the conversion target pixel extraction unit 71, the conversion parameter input unit 72, the pixel division conversion unit 73, and the divided image creation unit 74 shown in FIG. 3 are all included in the image data conversion unit 32 of FIG. The divided image storage unit 75 corresponds to the divided data storage unit 33 in FIG.
[0045]
The operation of the method for dividing a plurality of still images into data will be described below.
[0046]
First, data of the original image 100 is obtained by the original image obtaining means 70. Next, the conversion target pixel extraction unit 71 selects one or a plurality of arbitrary pixels for changing the original image 100. Here, one pixel 1010 is selected.
[0047]
Next, parameters used when dividing the pixel 1010 are input from the conversion parameter input means 72. The pixel division conversion unit 73 divides the selected pixel 1010 into a plurality of pixels 1011, 1012, 1013 according to the input parameters. Here, each of the plurality of pixels 1011, 1012, and 1013 has information different from that of the pixel 1010 on the original image 100, and when these are continuously drawn, the appearance is caused by the afterimage effect of human eyes. The pixel 1010 on the original image 100 can be reproduced.
[0048]
When performing division conversion, it is possible to pay attention to various parameters as parameters input from the conversion parameter input means 72. For example, when attention is focused on luminance, there is a case where a pixel is converted by causing a difference such as darker, slightly darker or brighter than the original pixel. There are also cases where attention is paid to hue, saturation, brightness, and the like.
[0049]
Next, the divided image creation unit 74 creates a plurality of images 101, 102, and 103 that are different from the original image 100 by replacing the created pixels 1011, 1012, and 1013 with the selected pixel 1010 in the original image 100. To do. The divided images 101, 102, and 103 obtained in this way are saved by the divided image storage means 75 in the form of one image data.
[0050]
In the process of dividing the original image, as the number of divided images and the number of pixels to be converted are increased, the effect of preventing screen capture from acting effectively increases. For example, all the pixels of the divided image may be different from the pixels of the original image. Conversely, the reproducibility of the original image drawing increases as the number of image divisions and the number of pixels to be converted are reduced. In addition, if the parameters for dividing the pixels are appropriately selected, the reproducibility of the original image does not deteriorate even if the number of divisions increases, and if pixel replacement is performed by selecting characteristic pixels of the image, Even with a smaller number of converted pixels, a sufficient effect of preventing unauthorized duplication can be obtained.
[0051]
A plurality of pixels different from the original image of the divided image may be the same data. For example, if the pixel data of a certain area of the divided image is the same, even if the divided screen is acquired by screen capture, the certain area is a one-color area whose shape is not known at all. The effect of becoming will be obtained.
[0052]
Next, a method for storing data of a plurality of divided still images in the divided data storage unit 33 described above will be described.
[0053]
FIG. 4 shows a method for storing a plurality of divided images. 4A, 4B, and 4C show three different types of storage methods.
[0054]
In FIG. 4, 101, 102, and 103 are the divided images A1, A2, and A3 shown in FIG. Reference numeral 305 denotes an image A0 that is different from the original image 100, and is an image that is a conversion source that can be created by converting the images 101, 102, and 103 from this image.
[0055]
Reference numeral 300 represents difference information M12 between the images 101 and 102, and 301 represents difference information M23 between the images 102 and 103. Reference numeral 302 represents difference information M01 between the images 305 and 101, 303 represents difference information M02 between the images 305 and 102, and 304 represents difference information M03 between the images 305 and 103.
[0056]
4A shows a method of saving all the divided images 101, 102, and 103 as they are, and FIG. 4B shows a method of saving the image 101 having complete information, the difference information 300, and the difference information 301. 4 (c) represents a method for saving the image 305 having complete information, the difference information 302, the difference information 303, and the difference information 304, respectively.
[0057]
A method of storing a plurality of divided images configured as described above and the operations of FIGS. 4A, 4B, and 4C will be described below.
[0058]
It is assumed that the images 100, 101, 102, 103, and 305 have the same size, and hereinafter, the size is represented as SIZE (A).
[0059]
First, the storage size of the image in the method of FIG. 4A requires a size 3 × SIZE (A) that is several times the size of the size SIZE (A) of the original image 100, which is not much in terms of storage size. Inefficient.
[0060]
The storage size in the method of FIG. 4B is the sum of the size SIZE (A) of the image 101 having complete information, the difference information 300, and the size 2α of the difference information 301. Since α is considered to be sufficiently smaller than SIZE (A), it has a feature that it can be stored in a smaller size than the method of FIG.
[0061]
Similarly, the method of FIG. 4C is also the sum of the size SIZE (A) of the image 305 having complete information, the difference information 302, the difference information 303, and the size 3α of the difference information 304, and FIG. It has the feature that it can be stored in a smaller size than the method of.
[0062]
In the method of FIG. 4B, the storage size is smaller by α than the method of FIG. 4C, but the images must be created in the order of 101, 102, 103, whereas FIG. ) Has a feature that the images 101, 102, and 103 can be created in an arbitrary order.
[0063]
From the above, by storing a plurality of images using difference information as in the methods of FIGS. 4B and 4C, it is possible to save a plurality of images as they are as in the method of FIG. However, the effect of reducing the storage size can be obtained.
[0064]
Next, a continuous drawing method for a plurality of divided still image data in the image display control means 50 described above will be described with reference to FIGS. 5 (a), 5 (b), and 6. FIG.
[0065]
5A shows a flow chart of an image drawing method stored by the method of FIG. 4B, and FIG. 5B shows an image drawing method stored by the method of FIG. 4C. FIG.
[0066]
FIG. 6 is a functional block diagram showing details of the image drawing processing portion of the system in the divided data receiving means 41 and the image display control means 50 of the image display device 4 of the first embodiment. The image data input unit 80, the conversion source image holding unit 81, and the difference information holding unit 82 in FIG. 6 are included in the divided data receiving unit 41 in FIG. Further, the image creation means 83 and the image drawing means 84 of FIG. 6 are included in the image display control means 50 in FIG.
[0067]
A continuous drawing method of a plurality of images using the difference information configured as described above and the operation of the image drawing portion will be described below.
[0068]
First, the case of FIG. 5A will be described. The image data is acquired by the image data input means 80, and the image 101 is passed to the conversion source image holding means 81, and the difference information 300 and 301 are passed to the difference information holding means 82.
[0069]
The conversion source image holding unit 81 passes the data of the image 101 to the image creation unit 83, and the image creation unit 83 passes the data of the image 101 as it is to the image drawing unit 84 and causes the image 101 to be drawn (S10). Next, the difference information 300 is passed from the difference information holding unit 82 to the image creating unit 83. The image creating unit 83 converts the data of the rendered image 101 into the data of the image 102 using the difference information 300 (S11). Then, the data of the image 102 created by the conversion is transferred to the image drawing means 84, and the image 102 is drawn (S12).
[0070]
Similarly, next, the difference information 301 is transferred from the difference information holding unit 82 to the image creating unit 83. The image creating unit 83 uses the difference information 301 to convert the rendered image 102 data into the image 103 data (S13). Then, the data of the image 103 created by the conversion is transferred to the image drawing means 84, and the image 103 is drawn (S14). With these as one cycle, continuous drawing of a plurality of images is performed.
[0071]
Next, the case of FIG. 5B will be described. Image data is acquired by the image data input means 80, and the image 305 is passed to the conversion source image holding means 81, and the difference information 302, 303, 304 is passed to the difference information holding means 82.
[0072]
The image creating unit 83 receives the data of the image 305 from the conversion source image holding unit 81 and the difference information 302 from the difference information holding unit 82. The image creating unit 83 creates data of the image 101 from the data of the image 305 using the difference information 302 (S20), and passes the created 101 data to the image drawing unit 84 to draw the image 101 ( S21).
[0073]
Next, the image creating unit 83 receives the data of the image 305 from the conversion source image holding unit 81 and the difference information 303 from the difference information holding unit 82. Then, the image creating unit 83 creates data of the image 102 from the data of the image 305 using the difference information 303 (S22), and passes the created 102 data to the image drawing unit 84 to draw the image 102 ( S23).
[0074]
Similarly, next, the image creation unit 83 receives the data of the image 305 from the conversion source image holding unit 81 and the difference information 304 from the difference information holding unit 82. Then, the image creating unit 83 creates the data of the image 103 from the data of the image 305 using the difference information 304 (S24), and passes the created 103 data to the image drawing unit 84 to draw the image 103 ( S25). With these as one cycle, continuous drawing of a plurality of images is performed.
[0075]
In the case of FIG. 5A, since the image saved by the method of FIG. 4B is drawn, only the images 101, 102, and 103 can be drawn in order. It has a feature that it can be drawn only by repeatedly performing conversion.
[0076]
In the case of FIG. 5B, since the image stored by the method of FIG. 4C is drawn, each image can be drawn in an order other than the order of the images 101, 102, and 103 depending on the application. have. However, since the data of the image 305 has to be transferred to the image creating unit 83 every time one image is drawn, processing that requires a heavier load than that in the case of FIG.
[0077]
As described above, the multiple image continuous drawing method according to the first embodiment has complete information by generating a plurality of image data using difference information between one image data and a plurality of images. An effect of continuously drawing a plurality of images is obtained.
[0078]
Next, a method for suppressing screen capture of an image in the image display system 1 according to the first embodiment will be described with reference to FIG.
[0079]
FIG. 7A shows a form in which a plurality of images drawn continuously on the image display unit 51 are directly confirmed by human eyes, and FIG. 7B is drawn on the image display unit 51 continuously. A mode in which a plurality of images are duplicated by screen capture is shown. The operation of the screen capture suppression method will be described below.
[0080]
In FIG. 7A, images 101, 102, and 103 are drawn repeatedly in succession. At this time, the difference pixels 1011, 1012, and 1013 having different information from the pixel 1010 of the original image 100 are continuously drawn, and the afterimage effect causes the human eye to change the pixel 1010 of the original image 100. Information very close to the pixel information appears to be reproduced. Thereby, the user can visually recognize a display in which a plurality of images 101, 102, and 103 are continuously drawn as if they were one original image 100.
[0081]
In FIG. 7B, when the images 101, 102, and 103 are drawn repeatedly in succession, the user uses the screen capture function of the personal computer so that any image data of the images 101, 102, and 103 is displayed. Is duplicated. The image duplicated at this time is image data including any one of the difference pixels 1011, 1012, and 1013 and is an image different from the original image 100. As the number of difference pixels increases, the value of duplication of an image obtained by screen capture decreases, and the effect of suppressing illegal duplication increases.
[0082]
As described above, in the image display system 1 according to the first embodiment, a plurality of images different from the original image are continuously and repeatedly drawn, so that when the screen is viewed with human eyes, the afterimage phenomenon of the plurality of images is caused. Although one piece of image information faithful to the original image can be obtained, only information different from the original image can be obtained by screen capture. Accordingly, it is possible to obtain an effect of preventing illegal copying of the original image without finally causing screen capture to work effectively.
[0083]
Next, an image display method in consideration of display characteristics by the above-described image display information setting unit 45 will be described with reference to FIGS. 1 and 8. FIG. 8 shows a flowchart of an image display method in consideration of display characteristics in the image display information setting means 45. The operation will be described below.
[0084]
In the image evaluation system 1 shown in FIG. 1, the image display device 4 draws a plurality of divided image data.
[0085]
First, at the start of drawing, the image display information setting means 45 confirms whether or not it already has information relating to the drawing performance of the display (S30). If not, the information input means 43 confirms whether or not to newly input information relating to the display performance of the display (S31). Information relating to the drawing performance of the display can be provided by a display manufacturer, or can be manually input by a user.
[0086]
As a result, if the display information is obtained, the image display information setting means 45 performs a dedicated drawing process setting (S33). If the display information is not obtained, the image display information setting unit 45 performs standard drawing processing setting given in advance (S32). The drawing process setting by the image display information setting unit 45 is performed by instructing the setting contents to the image display control unit 50 and setting the image display control unit 50 in the image display unit 51. Then, image drawing processing is performed by the image display control means 50 (S34).
[0087]
If the display information includes information about the display time per image, the image display interval setting unit 44 sets the drawing process. Thereafter, image drawing processing by the image display control means 50 is performed.
[0088]
The information related to the drawing performance of the display shown here refers to items such as screen resolution, number of colors, refresh rate, and afterimage characteristics as a device due to differences in CRT and LCD.
[0089]
By adjusting the display time per image, the number of colors, the image size, the display order, and the like using the values of these items, adjustment is performed so as to ensure sufficient image quality with a minimum processing load. The effect that it becomes possible is acquired.
[0090]
As described above, in the image display system 1 according to the first embodiment, the original image can be visually reproduced faithfully, but the image data having a plurality of pieces of image information that can be obtained only by the screen capture is different from the original image. It can be created.
[0091]
In the first embodiment, the setting information for the repetition interval of the still image data is input from the information input unit 43. This information is generated by the image data conversion device 3 and is divided. It may be included in the still image data. In this case, the setting information processing is performed not by the image display interval setting unit 44 but by the divided data receiving unit 41, and the divided data receiving unit 41 notifies the image display control unit 50 of the setting information. In this case, the drawing repetition time can be set for each of the divided images, and the drawing repetition time can be dynamically changed according to the image.
[0092]
In the first embodiment, the original image data storage device 2, the image data conversion device 3, and the image display device 4 are all personal computers, but they may not be personal computers. For example, the image display device 4 may be a device having a display screen such as a mobile phone or a car navigation system.
[0093]
In the first embodiment, the original image data storage device 2 and the image data conversion device 3 are different devices connected by a transmission path. However, they may be configured by a single device.
[0094]
In addition, the image data conversion device 3 and the image display device 4 are connected via the Internet, but may be connected via other wired or wireless lines. In addition, it is not always necessary to be connected by a transmission path, and the divided screen data may be transferred by a recording medium such as a flexible disk or a memory card.
[0095]
The program of the present invention is a program for causing a computer to execute the functions of all or part of the above-described image display system, image data conversion apparatus, and image display apparatus of the present invention, and cooperates with the computer. It is a program that operates as
[0096]
  The recording medium of the present invention includes a program for causing a computer to execute all or part of the functions of all or part of the above-described image display system, image data conversion apparatus, and image display apparatus of the present invention.RecordThe recording medium can be read by a computer and the read program is used in cooperation with the computer.
[0097]
The “part of means” of the present invention means one or several means out of the plurality of means.
[0098]
In addition, the “functions of the means” of the present invention means all or part of the functions of the means.
[0099]
Further, one usage form of the program of the present invention may be an aspect in which the program is recorded on a computer-readable recording medium and operates in cooperation with the computer.
[0100]
Further, the recording medium includes a ROM and the like, and the transmission medium includes a transmission medium such as the Internet, light, radio waves, sound waves, and the like.
[0101]
The computer of the present invention described above is not limited to pure hardware such as a CPU, and may include firmware, an OS, and peripheral devices.
[0102]
As described above, the configuration of the present invention may be realized as software or hardware.
[0103]
【The invention's effect】
The present invention can provide an image display method, an image display system, an image data conversion apparatus, and an image display apparatus that are not limited to operations on a specific OS and that do not effectively operate screen capture.
[Brief description of the drawings]
FIG. 1 is a block diagram of an image display system in Embodiment 1 of the present invention.
FIG. 2 is an explanatory diagram of a method for dividing a plurality of still images into data according to Embodiment 1 of the present invention;
FIG. 3 is a functional block diagram showing a division processing portion into data of a plurality of still images in Embodiment 1 of the present invention.
FIG. 4 is a diagram showing a storage method for a plurality of divided images according to the first embodiment of the present invention.
FIG. 5 is a flowchart showing a method for continuously drawing a plurality of images in the first embodiment of the present invention.
FIG. 6 is a functional block diagram of an image drawing portion in the first embodiment of the present invention.
FIG. 7 is a diagram showing a method for suppressing screen capture of an image according to the first embodiment of the present invention.
FIG. 8 is a flowchart of an image display method in consideration of display characteristics in Embodiment 1 of the present invention.
[Explanation of symbols]
1 Image display system
2 Original image data storage device
3 Image data converter
4 Image display device
16 Original image data
21 Original image data input means
22 Original image data storage means
23 Original image data transmission means
31 Original image data receiving means
32 Image data conversion means
33 Divided data storage means
34 Divided data transmission means
41 Divided data receiving means
42 Image display means
43 Information input means
44 Image display interval setting means
45 Image display information setting means
50 Image display control means
51 Image display
60 Internet
100 Original image
101, 102, 103, 305 An image different from the original image
1010 Pixel converted on original image
1011, 1012, 1013 Converted pixels
300, 301, 302, 303, 304 Difference information

Claims (18)

An image that is visually synthesized and displayed substantially the same as the original image by decomposing the original image, which is a still image, into a plurality of still images, and displaying the decomposed still images sequentially and repeatedly at a predetermined timing. Display method,
Generating conversion source image data having information for one screen different from the original image, and each difference data between the conversion source image data and the data of each decomposed still image;
An image display method in which the plurality of decomposed still images are created from the generated conversion source image data and the difference data, and the created still images are sequentially and repeatedly displayed at the predetermined timing. An original image data storage device for storing an original image which is a still image;
An image data conversion device that visually synthesizes the original image when it is sequentially displayed repeatedly at a predetermined timing and decomposes it into a plurality of still images that look substantially the same as the original image;
An image display system comprising: an image display device that sequentially and repeatedly displays the plurality of still images decomposed by the image data conversion device at the predetermined timing;
The image data conversion device generates conversion source image data having information for one screen different from the original image, and difference data between the conversion source image data and the data of each decomposed still image And
The image display device creates the plurality of decomposed still images from the conversion source image data generated by the image data conversion device and the difference data, and the created plurality of still images are generated at the predetermined timing. An image display system that displays images sequentially and repeatedly. The image data conversion device and the image display device are connected by a transmission path,
The image display system according to claim 2, wherein the conversion source image data and the difference data generated by the image data conversion device are transmitted to the image display device through the transmission path.   The image display system according to claim 2, wherein the original image data storage device is the same device as the image data conversion device. Storing an original image which is a still image;
An image data conversion step for visually decomposing the original image into a plurality of still images that are visually combined and displayed substantially the same as the original image when sequentially displayed at a predetermined timing;
An image display method comprising: an image display step of sequentially and repeatedly displaying the plurality of decomposed still images at the predetermined timing,
In the image data conversion step, conversion source image data having information for one screen different from the original image, and difference data between the conversion source image data and the decomposed still image data are generated. And
In the image display step, the plurality of decomposed still images are created from the conversion source image data generated in the image data conversion step and the difference data, and the created still images are generated at the predetermined timing. An image display method that displays images repeatedly in sequence. Original image data receiving means for receiving original image data from an original image data storage device for storing an original image which is a still image;
Image data conversion means for visually recombining the received original image data when it is sequentially displayed repeatedly at a predetermined timing and decomposing it into a plurality of still image data that looks substantially the same as the original image. Image data conversion device,
The image data conversion means generates conversion source image data having information for one screen different from the original image, and difference data between the conversion source image data and the decomposed still image data. Image data conversion device. The original image, which is a still image, is decomposed from an image data conversion device that is visually synthesized when it is sequentially displayed repeatedly at a predetermined timing and is substantially the same as the original image, and decomposes into a plurality of still images Disassembled data receiving means for receiving the plurality of still image data;
An image display device comprising image display means for sequentially displaying the received plurality of still image data at the predetermined timing,
The decomposed data receiving means, instead of the plurality of decomposed still image data, conversion source image data having information for one screen different from the original image, the conversion source image data and each of the decomposed each Each difference data with the still image data is received,
The image display means creates the plurality of decomposed still image data from the conversion source image data and each difference data, and repeatedly displays the created plurality of still image data at the predetermined timing. Image display device. The decomposed still image data is
The image data conversion device according to claim 6, wherein data of one or more specific pixels is different from data of pixels at the same position in the original image data. The data of the one or more specific pixels of the plurality of still image data decomposed different from the data of the pixels at the same position of the original image data,
The image data conversion apparatus according to claim 8, wherein brightness is different from pixel data at the same position of the original image data. The data of the one or more specific pixels of the plurality of still image data decomposed different from the data of the pixels at the same position of the original image data,
The image data conversion device according to claim 8 or 9, wherein at least one of hue, saturation, and brightness is different from pixel data at the same position in the original image data. The pixel data of the plurality of decomposed still image data different from the pixel data at the same position of the original image data,
The image data conversion device according to claim 8, wherein the image data conversion device is pixel data of all the plurality of still image data. The data of the specific plurality of pixels of the plurality of still image data decomposed, which is different from the data of the pixels at the same position of the original image data,
The image data conversion apparatus according to claim 8, wherein data of two or more of the pixels is the same.   The image display apparatus according to claim 7, further comprising an image display interval setting unit that can arbitrarily set a timing at which the received plurality of still image data are sequentially and repeatedly displayed. Furthermore, a drawing performance input means for inputting drawing performance information;
The image display apparatus according to claim 7, further comprising an image display information setting unit configured to perform display settings based on the drawing performance information. The image display system according to claim 2.
An original image data storage device for storing an original image which is a still image;
An image data converter that visually synthesizes the original image when it is sequentially and repeatedly displayed at a predetermined timing and decomposes it into a plurality of still images that look substantially the same as the original image;
A program for causing a computer to function as an image display device that sequentially and repeatedly displays the plurality of still images decomposed by the image data conversion device at the predetermined timing. The image data conversion device according to claim 6,
Original image data receiving means for receiving original image data from an original image data storage device for storing an original image which is a still image;
A computer as image data conversion means for visually recombining the received original image data when it is sequentially displayed repeatedly at a predetermined timing and decomposing it into a plurality of still image data that looks substantially the same as the original image Program to make it work. The image display device according to claim 7.
The original image, which is a still image, is decomposed from an image data conversion device that is visually synthesized when it is sequentially displayed repeatedly at a predetermined timing and is substantially the same as the original image, and decomposes into a plurality of still images Disassembled data receiving means for receiving the plurality of still image data;
A program for causing a computer to function as image display means for sequentially displaying the received still image data repeatedly at the predetermined timing.   18. A recording medium on which the program according to claim 15 is recorded, the recording medium being usable by a computer.

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