JPH10222144A - Picture display device and its method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable a picture to be seen in detail in magnified display even for a low resolution picture by plotting, with sub picture data in accordance with a set magnification, the prescribed area of the primary picture data displayed by a plotting means. SOLUTION: With the center point specified for magnification and reduction (S21), an area in the main picture is determined which is to be displayed actually in the picture display area from the position of that point, magnification after power variation, and the size of the picture display area (S22). A rectangular part determined in the main picture is magnified and displayed in the picture display area (S23). Attribute information data are read in (S26). With sub picture data stored in a separate file, that file is read in a memory (S28). The sub picture data are converted in color tone (S29). Presence/absence is examined of the part where the rectangle so determined is superimposed on the area with the sub picture displayed (S30). Plotting is performed, on the superimposed part, by over-writing on the main picture the sub picture corresponding to such part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an image display apparatus and method for displaying an image on a monitor.

[0002]

2. Description of the Related Art In recent years, with the spread of electronic cameras and scanners, it has become possible to easily capture an image into a computer and view it on a monitor. However, when an image captured by an electronic camera or the like having a low resolution is viewed on a computer monitor, only a small image is displayed because the number of pixels is small. In addition, when it is attempted to enlarge the image, one pixel on the image data is displayed on the monitor using a plurality of pixels, and the image is generally seen as a mosaic. Therefore, electronic cameras and scanners with higher resolution are required.

[0003] On the other hand, there is a method in which only a portion requiring a detailed image in the entire image is photographed by an electronic camera or the like and separately stored.

[0004]

However, when the image data is photographed at a high resolution such that a detailed image can be seen even when the image is enlarged as in the above-mentioned conventional example, the amount of the image data increases as the resolution increases. There has been a problem that a large-capacity auxiliary storage device is required for the computer.

[0005] Further, when only a detailed portion is photographed separately from the whole image and is stored as a separate data file, the number of files in the auxiliary storage device increases,
In addition, there is a problem that a file name or the like must be remembered in order to associate the entire image data with partial and detailed image data that is a part thereof.
In that case, in order to view the entire image and the partial image, the user had to view them in separate windows, and could not see them as a series of images.

Accordingly, the present invention provides an image display apparatus and method capable of viewing details of an image as a series of image data when an image having a low resolution is enlarged and displayed without increasing the amount of image data. The purpose is to provide.

[0007]

In order to achieve the above object, an image display device according to a first aspect of the present invention is an image display device for displaying image data in an expandable manner. Image data storage means for storing sub-image data corresponding to a predetermined area of the image data; display means for displaying the stored main image data; and magnification setting means for setting a magnification of the displayed main image data. Drawing means for drawing a predetermined area of the displayed main image data with the sub-image data according to the set magnification.

In the image display device according to the second aspect, in the image display device according to the first aspect, the main image data is a photographed halftone image, and the sub image data has a higher resolution than the main image data. It is a photographed halftone image.

According to a third aspect of the present invention, in the image display apparatus according to the first aspect, the sub-image data is included in attribute data accompanying the main image data.

According to a fourth aspect of the present invention, in the image display apparatus according to the first aspect, the image data storing means stores the sub-image data in a file different from the main image data, and Is stored in the attribute data accompanying the main image data.

According to a fifth aspect of the present invention, in the image display apparatus according to the first aspect, the drawing means determines a color tone of the sub-image data in a predetermined area of the main image data in which the sub-image data is drawn. And a color tone correcting means for approximating the color tone.

According to a sixth aspect of the present invention, there is provided the image display device according to the first aspect, further comprising an area designating unit for designating a predetermined area of the main image data on which the sub image data is drawn. And

According to a seventh aspect of the present invention, there is provided an image display method for displaying image data in an expandable manner, wherein main image data and sub-image data corresponding to a predetermined area of the main image data are stored. Displaying image data, setting a magnification of the displayed main image data, and drawing a predetermined area of the displayed main image data with the sub-image data according to the set magnification. And

In the storage medium according to the present invention, a function of storing main image data and sub-image data corresponding to a predetermined area of the main image data when displaying the image data in an expandable manner, A function of displaying a main image data, a function of setting a magnification of the displayed main image data, and a function of drawing a predetermined area of the main image data with the sub image data according to the set magnification. A program to be realized is stored.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the image display apparatus and method of the present invention will be described. The image display device of the present embodiment is applied to a personal computer. FIG. 1 is a perspective view showing an appearance of a personal computer according to the embodiment. In the figure, 301 is a computer main body, 302 is a display for displaying data, 303 is a mouse as a pointing device, 304 is a mouse button, and 305 is a keyboard.

Reference numeral 307 denotes an electronic camera which can be connected to the computer main body.
They are connected by a general-purpose interface 306 such as a CSI interface capable of high-speed image transfer.

FIG. 2 is a diagram showing a schematic configuration of hardware and software of the image display device. In the figure, reference numeral 509 denotes hardware, and 505 denotes an operating system (O / O) operating on the hardware 509.
S). Reference numeral 504 denotes application software that operates on the OS 505.

In FIG. 2, a CPU, a memory, and the like included in the hardware 509 are omitted.
The memory management system and the like included in 505 are omitted. The sub-image data creation processing program and the sub-image data drawing processing program executed by the CPU are stored in the ROM serving as the memory.

Reference numeral 515 denotes a hard disk for physically storing files and data. Reference numeral 508 denotes a file system constituting the OS 505, which has a function of allowing application software to input and output files while being aware of the hardware.

Reference numeral 514 denotes a disk I / O for the file system 508 to read / write the hard disk 515.
Interface. Reference numeral 507 denotes a drawing management system included in the OS 505, which has a function of enabling application software to perform drawing without being aware of hardware.

Reference numeral 513 denotes a video interface for the drawing management system 507 to draw on the display 302. Reference numeral 506 denotes an input device management system included in the OS 505, which has a function of enabling application software to receive a user's input without being aware of hardware.

Reference numeral 510 denotes an input device management system 506.
Is a keyboard interface for receiving input from the keyboard 305, and 512 is a mouse interface for enabling the input device management system 506 to receive input from the mouse 303.

The electronic camera 307 is connected to a bidirectional interface or a SCSI interface, etc.
Image data and the like can be exchanged through the input device management system 506.

Reference numeral 501 denotes an image data management system.
Reference numeral 502 denotes a data management unit for managing image data with attribute information or a keyword input by a user. A data display unit 503 displays the managed image data. Further, the enlargement-compatible image data creation means 517 receives the image data from the image data management system 501 and creates enlargement-compatible image data. Then, the created enlarged image data is registered in the image data management system 501.

FIG. 3 is a diagram showing a display screen of the image data management system 501. Image data management system 501
Manages some image data as a folder, and the image data included in each folder is displayed as a reduced image (hereinafter, a thumbnail image). The user can search for a desired image by examining the thumbnail image.

In the figure, reference numerals 91 and 92 correspond to windows representing folders, and a thumbnail image 94 is displayed in each folder. Below the thumbnail image 94, a file name 95 storing the corresponding image data is displayed. By double-clicking an arbitrary thumbnail image with a mouse or by clicking the thumbnail image to select it, and then specifying the image viewer button 96, an image viewer described later is opened and the image can be viewed. The enlargement-compatible image data creation unit 5 is designated by specifying the enlargement-compatible image creation button 97 with a mouse.
17 starts.

FIG. 4 is a diagram showing the structure of the created enlarged corresponding image data. Here, an image representing the whole is referred to as a main image, and a detailed image corresponding to a part of the main image is referred to as a sub-image. First, the sub-image and the main image can be associated with the enlarged image data in two ways.

In the first method, as shown by reference numeral 41 in FIG. 4, the sub-image data itself is stored as attribute information 43 of the main image data, and is made into one data file. First, information 412 relating to sub-image data is described as attribute information 43.

The information 412 about the sub-image data describes that the data itself is stored as the number of sub-image data and the storage method of the sub-image data. After that, data on the sub-images is connected by the number of sub-images. In this case, the display position information 414, 41 of the sub-image
7, sub-image headers 415 and 418, and sub-image data 416 and 419 are included. Here, the coordinates representing the rectangle corresponding to the sub-image in the main image are included in the display position information 414 of the sub-image.

In the second method, the sub-image data is stored as another image data file, and the storage location in the auxiliary storage device is described in the attribute information. As shown by reference numeral 42 in FIG. 4, the attribute information 43 of the main image data
First, information 423 on the sub-image data is described. In this case, “path name or code corresponding thereto” is stored as the number of sub-image data and the storage method of the sub-image data.

Next, the sub-image data is stored. In this case, the display position information and the color tone conversion information 42 are stored.
4, 426, and sub image data file path name 4
25 and 427 are stored by the number of sub-image data. Here, the tone conversion information means that when a part of the main image is replaced with the sub-image, the color tone of the sub-image is converted into an image similar to the tone of the main image in order to reduce the color difference between the images. Information. The details will be described later.

Which method is used to store the sub-image data is set by the enlargement-compatible image data creation means 517.

FIG. 6 is an enlarged correspondence image data creating means 517.
Graphical User Interface (GUI)
9 is a photograph showing a halftone image as an example. The enlargement-compatible image data creation means 517 is activated by designating the enlargement-compatible image creation button 97 on the thumbnail display screen 90 of the image data management system 501 shown in FIG.

First, the user selects a thumbnail image of the main image from the thumbnail display screen 90, and drags and drops it to the main image display area 61. As a result, the selected image 65 is displayed in the main image display area 61. Next, the thumbnail image of the sub image is dragged and dropped from the thumbnail display screen 90 to the sub image display area 62. Thus, the selected image 66
Is displayed in the sub-image display area 62.

After confirming that the main image 65 and the sub image 66 are the desired images, the user sets a rectangular area corresponding to the sub image in the main image with a mouse. This setting method is generally performed by image processing software or the like. One corner of a rectangular area is button-down with a mouse and dragged to a diagonal position.

As a result, a rectangle 70 surrounding the designated area on the main image 65 is displayed. FIG. 7 shows the main image 6
5 is a photograph showing a halftone image in which a rectangle 70 is displayed in FIG. The rectangle 70 has several control points 71
Is displayed, so that it can be easily changed even after the rectangle 70 is once set.

When the user specifies the composition button 63 after setting the rectangle 70 correctly, the sub-image 66 is reduced and displayed in the area of the designated rectangle 70 in the main image 65.
Thereafter, a result confirmation dialog 1300 is displayed. FIG. 13 is a view showing the result confirmation dialog 1300. The user determines whether or not the sub-image is correctly incorporated in the main image. If the sub-image is correct, the user specifies an OK button 1301, and if not, specifies the Cancel button 1302.
When the OK button 1301 is designated, the information of the sub image is added to the attribute information of the main image.

Thereafter, when there is another image to be used as a sub image, a new image is dragged and dropped from the image data management system 501 to the sub image display area 62. If there is no other image to be used as a sub image, the user specifies the Exit button 64 to end the enlarged image data creation processing. On the other hand, when the Cancel button 1302 is specified, the area setting of the rectangle 70 is redone.

FIG. 5 is a flowchart showing a sub-image data creation processing procedure executed by a CPU (not shown). First, a main image is set (step S1).
That is, a desired thumbnail image is dragged and dropped from the thumbnail display screen 90 of the image data management system 501 to the main image display area 61.

Next, a sub-image is set (step S
2). A thumbnail image serving as a sub image is dragged and dropped from the thumbnail display screen 90 to the sub image display area 62.

Subsequently, it is set which part of the main image the sub-image set in step S2 corresponds to (step S3). As mentioned above, the main image 65
The area of the rectangle 70 is set inside.

Then, a matching process is performed (step S4). In the matching process, the position of the image is finely adjusted. First, the sub-image is reduced based on the set size of the rectangle 70 to create image data. Matching processing is performed between the created image data and the image data included in the set rectangle 70 to perform accurate positioning. Various methods for matching (eg, structural matching)
Is already known, and a detailed description thereof will be omitted here. As a result, the area of the rectangle 70 set in step S3 is also changed, and the area including the sub-image is accurately determined.

Next, a color tone correction process is performed by examining the difference in color tone between the main image and the sub image (step S5). In the color tone correction processing, even if a part of the main image is replaced with the sub image, the sub image is made to look natural. This color tone correction processing will be described later.

Based on the result of the position adjustment and the color tone adjustment in the processing of steps S4 and S5, an image in which a part of the main image is replaced with a sub-image is displayed (step S6).

A dialog for confirming whether or not the result is correct is displayed (see FIG. 13). When the result is correct, that is, when the OK button 1301 is pressed, the process proceeds to step S8. On the other hand, if not correct, that is, Cancel
If the el button 1302 has been pressed, the process returns to step S3, and the process for setting the area of the rectangle 70 is repeated.

Processing is divided according to the data storage method (step S8). That is, when the sub-image data itself is included in the attribute information of the main image data and stored (see reference numeral 41 in FIG. 4), the process proceeds to step S9. If not, that is, if the path name to the file in which the sub-image data is stored is included in the attribute information of the main image data and stored (see reference numeral 42 in FIG. 4), step S
The process proceeds to step S10 without performing the process of step S9. Which method is to be stored is set in advance by using the sub-image information storage method setting buttons 67 and 68 in FIG.

In step S9, the color tone of the sub-image data is converted. Since parameters have already been determined for conversion in step S5, color tone conversion is performed based on the parameters.

Based on the set sub-image data storage method, attribute information of the main image is created and stored as a file together with the main image data. Thus, the creation of the enlarged display corresponding image data is completed.

Next, the color tone correction processing in step S5 will be described. Normally, in the case of images taken with an electronic camera etc., the color tone differs slightly between the image representing the whole due to differences in white balance etc. and the image taken in detail of the same subject even when comparing the same subject There is. For this reason, when the sub-image is superimposed and displayed on the corresponding position in the main image, a difference in color tone occurs near the boundary. In the present embodiment, a color tone correction process for adjusting the color tone of the sub image to the color tone of the main image is performed to eliminate the difference in color tone near the boundary.

FIG. 14 is a flowchart showing a color tone correction processing procedure. First, the sum of the R, G, and B pixel values of the region corresponding to the sub image in the main image {R main, {G main,}
B main is obtained (step S11).

Similarly, R and R of pixels included in the sub-image are
The sum of R and G, that is, G and B, is obtained (step S12). A total ratio RR, RG, RB of the respective pixel values R, G, B obtained in steps S11 and S12 is calculated (step S13). Here, RR = {R main / {R sub}, RG = {G main / {G sub},
RB = {B main / {B sub}.

The sub-image data is actually converted using the ratio of the sum of the pixel values of the main image and the sub-image obtained in step S13 (step S14). Here, the values of R, G, and B in the sub-image data before conversion are represented by R suffix ゛ old, G
Suffix old, B suffix old, and converted values are R suffix new, G
Assuming that B suff is new, R suff is new = R suff old × RR, G suff is ne
w = G suffix old × RG, B suffix new = B suffix old × RB.

Next, a case where an image is viewed will be described. FIG. 8 is a photograph showing a halftone image as a graphical user interface (GUI) for displaying enlarged corresponding image data. The enlarged corresponding image data is displayed by the data display means 503.

The display screen 81 displays the image data management system 5
01, and is displayed by selecting a desired thumbnail image from the thumbnail display screen 90 of the image data management system 501 and double-clicking the thumbnail image, or selecting the thumbnail image and specifying the image viewer button 96. Is done.

In FIG. 8, reference numeral 87 denotes a selected image 86
Is an image display area for displaying. The enlarged display mode button 82 and the reduced display mode button 83 are for respectively enlarging or reducing the displayed image 86 twice or half that of the displayed image 86. FIG. 10 shows an enlarged display mode mouse cursor 100 and a reduced display mode mouse cursor 101. When each of the enlarged display mode button 82 and the reduced display mode button 83 is designated with a mouse, the mouse cursor changes to the enlarged display mode mouse cursor 100 and the reduced display mode mouse cursor 101, and the display mode is changed to the enlarged display mode and the reduced display mode. Become.

When an arbitrary part of the image 86 is clicked in this state, the image is enlarged twice or reduced to one half with respect to that part. The magnification display area 84 indicates an enlargement ratio or a reduction ratio of the image 86 at that time. The end button 85 closes the display screen 81 and returns the processing to the image data management system 501.

FIG. 8 shows a state in which the image is displayed at 1 ×, and “× 1” indicating the 1 × display is shown in the magnification display area 84. In this state, when the enlarged display mode button 82 is designated with a mouse, the enlarged display mode is set.
The mouse cursor is in the enlarged display mode mouse cursor 100
Is changed to When an arbitrary portion of the image 86 is clicked in this state, the image 86 is enlarged twice around the portion.

FIG. 9 shows the image display area 8 in the enlarged display mode.
7 is a photograph showing the clicked state. Of the image displayed twice at the center of the clicked point, an image that fits in the image display area 87 is displayed. Further, “× 2” is displayed in the magnification display area 84, indicating that the display is double magnification. In FIG. 9, since the image 86 is enlarged twice, the entire image cannot be displayed. For this reason, scroll bars 92 and 93 are displayed, and it is possible to see other parts that are not displayed by operating them. In the image 86, a rectangular area surrounded by a dotted line 91 has sub-image data, so that sub-image data is displayed in that area instead of the main image data. In FIG. 9, the dotted line 91 indicates that the image data is sub-image data for convenience of explanation, but the dotted line 91 is not actually displayed.

When an arbitrary part of the image 86 is clicked again with the mouse in the state of FIG. 9, the image is enlarged and displayed again, and an image with a magnification of 4 times is displayed. Conversely, if the user designates the reduced display mode button 83 with the mouse and then clicks an arbitrary part of the image 86, the display returns to the one-time display mode, and the state shown in FIG. 8 is obtained.

As described above, the enlarged display mode button 82,
By operating the reduced display mode button 83, the image can be enlarged or reduced for viewing.

FIG. 11 is a flowchart showing the sub-image data drawing procedure. In this embodiment, the image is displayed at a magnification of 1 immediately after the image viewer is started. Therefore, at the time of startup, only data corresponding to the main image information 44 in FIG. 4 is read from the auxiliary storage device to the memory.

First, when the center point of enlargement or reduction is designated by the user with the mouse (step S21), the image display area 87 is actually determined based on the position of the point, the magnification after scaling, and the size of the image display area 87. Then, an area in the main image to be displayed is obtained (step S22). FIG.
FIG. 4 is a diagram showing an area in a main image. For example, suppose that a point (x, y) 1201 in the image is clicked during the enlarged display mode.

Assuming that the magnification after enlargement is m, and the vertical and horizontal lengths of the image display area 87 are h and w, respectively, the coordinates A1202 and B1203 of the rectangular area in the main image displayed on the image display area 87 after enlargement. , C1204, and D1205 are as follows.

A = (x−w / m / 2, y−h / m / 2) B = (x + w / m / 2, y−h / m / 2) C = (x−w / m / 2, y + h / m / 2) D = (x + w / m / 2, y + h / m / 2) The rectangular portion of the main image obtained in step S22 is enlarged and displayed in the image display area 87 (step S2).
3).

It is determined whether or not the magnification after magnification is 2 times or more (step S24). If the magnification is 2 times or more, the process proceeds to step S25. If not, the process is terminated.

It is checked whether or not the attribute information data of the main image already exists in the memory (step S2).
5). The attribute information data is read into the memory from the hard disk (HD) when the display is changed from the 1 × display to the 2 × display for the first time.

If the attribute information data does not exist in the memory, that is, if the display is to be performed once or more for the first time, the process proceeds to step S26. On the other hand, if the attribute information data already exists in the memory, the process proceeds to step S30.

The attribute information data is read (step S2)
6). That is, the part of the attribute information 43 after the main image information 44 shown in FIG. 4 is read. It is determined whether or not the sub image data is stored as a path name (step S27).
When the sub-image data is stored as in 1, the sub-image data is also read into the memory.

On the other hand, if the sub-image data is stored in another file and its path name is stored in step S27 as shown by reference numeral 42 in FIG. 4, the file is read into the memory (step S28). ). Thereafter, the color tone of the sub image data is converted (step S29). The conversion parameters used at this time are included in the attribute information read in step S26, and include R, G, and R of the main image and the sub image described in the description of the color tone correction processing.
B ratios RR, RG, RB. The conversion parameters included in the attribute information correspond to the color tone conversion information 424 in FIG. Further, since the conversion parameters have been read in step S26, in step S29, conversion is performed by multiplying the R, G, and B values of each pixel of the sub-image by RR, RG, and RB, respectively. As a result, the color tone of the sub image is converted to a color tone close to the color tone of the main image.

It is checked whether or not there is a portion where the rectangle obtained in step S22 and the area where the sub-image is displayed overlap (step S30). The area where the sub-image is displayed is an area corresponding to the sub-image in the main image, and corresponds to the display position information in the attribute information. If there is an overlapping portion, the sub-image corresponding to that portion is drawn by overwriting the main image.

As described above, in the image display device of the present embodiment, the attribute information of the main image data includes the sub-image data representing a part of the image in detail or the path name in which the sub-image data is stored. When a part of the whole image is enlarged and displayed, the sub-image can be drawn over the main image, and the enlarged part of the image can be seen in detail. Also, by including the sub-image data in the attribute information of the main image data, the number of data files can be reduced.

In this embodiment, the case where the sub-image corresponding to the main image is provided is shown. However, the sub-image corresponding to the sub-image is further provided, and when the image is enlarged and displayed, a detailed image is viewed. You may be able to. The hierarchical structure of such image data can be set arbitrarily.

Instead of overwriting the sub-image according to the magnification, when the main image is enlarged, it may be overwritten when the number of enlarged pixels corresponding to one pixel is equal to or more than a predetermined number.

Further, the present invention may be applied to a system constituted by a plurality of devices, or may be applied to an apparatus constituted by a single device. Needless to say, the present invention can be applied to a case where the present invention is achieved by supplying a program to a system or an apparatus. In this case, by reading out a storage medium storing a program represented by software for achieving the present invention into a system or an apparatus, the system or the apparatus can enjoy the effects of the present invention.

In the present embodiment, a ROM is used as a storage medium.
Is used as a storage medium, for example, a floppy disk, hard disk, optical disk, magneto-optical disk, CD-ROM, CD-R, DVD, magnetic tape,
A non-volatile memory card or the like can be used.

[0076]

According to the image display device of the first aspect of the present invention, when the image data is displayed in an expandable manner, the image data storage means corresponds to the main image data and a predetermined area of the main image data. Storing the sub-image data, displaying the stored main image data by display means, setting the magnification of the displayed main image data by magnification setting means,
According to the set magnification, a predetermined area of the main image data displayed by the drawing unit is drawn by the sub-image data, so that even an image having a low resolution can be enlarged without increasing the amount of image data. When displayed, the details of the image can be viewed as a series of image data. Further, by storing only a part of the image data to be enlarged, an increase in the amount of image data can be suppressed.

According to the image display device of the second aspect,
Since the main image data is a photographed halftone image and the sub image data is a halftone image photographed at a higher resolution than the main image data, one pixel of image data photographed by an electronic camera or a scanner is used. Can be prevented from being displayed on a monitor with a plurality of pixels and appearing like a mosaic.

According to the image display device of the third aspect,
Since the sub-image data is included in the attribute data accompanying the main image data, the sub-image data can be handled as one image data, and data arrangement such as storage, modification, and deletion can be facilitated.

According to the image display device of the fourth aspect,
The image data storage means stores the sub-image data in a separate file from the main image data, and a storage location and a file name of the sub-image data are included in attribute data accompanying the main image data. The amount of data can be reduced.

According to the image display device of the fifth aspect,
The drawing means includes a color tone correction means for approximating a color tone of the sub-image data to a color tone of a predetermined area of the main image data on which the sub-image data is drawn. Can be displayed with.

According to the image display device of the sixth aspect,
Since an area designating unit for designating a predetermined area of the main image data on which the sub-image data is drawn is provided, an arbitrary area of the main image data can be enlarged.

According to the image display method of the seventh aspect,
In an image display method for displaying image data in an expandable manner, main image data and sub-image data corresponding to a predetermined area of the main image data are stored, the main image data is displayed, and the displayed main image data is displayed. Is set, and a predetermined area of the displayed main image data is drawn with the sub-image data in accordance with the set magnification. Therefore, an image having a low resolution can be obtained without increasing the amount of image data. Even when the image is enlarged and displayed, the details of the image can be viewed as a series of image data.

According to the storage medium of the present invention, when the image data is displayed in an expandable manner, the function of storing the main image data and the sub-image data corresponding to a predetermined area of the main image data, A function of displaying image data, a function of setting a magnification of the displayed main image data, and a function of drawing a predetermined area of the main image data with the sub-image data according to the set magnification. Since the program to be realized by the computer is stored, the program can be mounted on the information processing device, and the versatility of the information processing device can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view illustrating an appearance of a personal computer according to an embodiment.

FIG. 2 is a diagram illustrating a schematic configuration of hardware and software of the image display device.

FIG. 3 is a diagram showing a display screen of the image data management system 501.

FIG. 4 is a diagram showing a structure of created enlarged corresponding image data.

FIG. 5 is a flowchart illustrating a sub-image data creation processing procedure executed by a CPU (not shown).

FIG. 6 is a photograph showing a halftone image as a graphical user interface (GUI) of the enlargement-compatible image data creating means 517.

7 is a photograph showing a halftone image in which a rectangle 70 is displayed on a main image 65. FIG.

FIG. 8 is a graphical view showing enlarged image data.
5 is a photograph showing a halftone image as a user interface (GUI).

FIG. 9 is a photograph showing a state where the image display area 87 is clicked in the enlarged display mode.

FIG. 10 is a diagram showing an enlarged display mode mouse cursor 100 and a reduced display mode mouse cursor 101.

FIG. 11 is a flowchart illustrating a sub-image data drawing processing procedure.

FIG. 12 is a diagram showing an area in a main image.

FIG. 13 is a diagram showing a result confirmation dialog 1300.

FIG. 14 is a flowchart illustrating a color tone correction processing procedure.

[Explanation of symbols]

 501 Image data management system 503 Data display means 507 Drawing management system 517 Enlargement-compatible image data creation means

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁶ Identification code FI G09G 5/36 520 H04N 5/66 D H04N 5/66 G06F 15/62 322A

Claims (8)

[Claims] 1. An image display device for displaying image data in an expandable manner, comprising: image data storage means for storing main image data and sub-image data corresponding to a predetermined area of the main image data; Display means for displaying data; magnification setting means for setting a magnification of the displayed main image data; and a predetermined area of the displayed main image data in the sub image data according to the set magnification. An image display device comprising: a drawing unit for drawing. 2. The method according to claim 1, wherein the main image data is a photographed halftone image, and the sub image data is a halftone image photographed at a higher resolution than the main image data.
The image display device as described in the above. 3. The image display device according to claim 1, wherein the sub-image data is included in attribute data accompanying the main image data. 4. The image data storage means stores the sub-image data in a file separate from the main image data, and a storage location and a file name of the sub-image data are included in attribute data attached to the main image data. The image display device according to claim 1, wherein the image is displayed. 5. The image processing device according to claim 1, wherein the drawing unit includes a color tone correcting unit that approximates a color tone of the sub-image data to a predetermined region of the main image data on which the sub-image data is drawn. 2. The image display device according to 1. 6. The image display device according to claim 1, further comprising an area designating unit for designating a predetermined area of the main image data on which the sub-image data is drawn. 7. An image display method for displaying image data in an expandable manner, comprising: storing main image data and sub-image data corresponding to a predetermined area of the main image data; displaying the main image data; Setting a magnification of the main image data, and drawing a predetermined area of the displayed main image data with the sub-image data according to the set magnification. 8. A function of storing main image data and sub-image data corresponding to a predetermined area of the main image data when displaying the image data in an expandable manner; a function of displaying the main image data; A program for causing a computer to realize a function of setting a magnification of the main image data set and a function of drawing a predetermined area of the main image data with the sub-image data in accordance with the set magnification. A storage medium characterized by the above-mentioned.