JP2003308059A - Image display processing apparatus, image display processing method, program and storage medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an image display processing apparatus in which a part of an image is expanded and displayed by simple operation. <P>SOLUTION: On a personal computer, an image display processing system is constructed by a program stored in a hard disk device 106, and the image display processing system performs processing for storing a display position specifying a part to be expanded and displayed in a second display mode while making it correspond to an image displayed in the second display mode, and processing for reading the display position corresponding to the image to be displayed in the second display mode out of a RAM 105 or the hard disk device 106 when switching a display mode from a first display mode to the second display mode, expanding and displaying a part of the image specified by the read display position. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display processing device, an image display processing method, a program and a storage medium.

[0002]

2. Description of the Related Art Generally, many information processing apparatuses, such as personal computers, are equipped with an image processing function. With this image processing function, when an input image or the like is viewed on the screen of a display, A zoom function for enlarging and displaying a desired area is often provided.

This zoom function will be described with reference to FIG. FIG. 9 is a diagram showing an example of a screen when a part of an image is enlarged and displayed using a conventional zoom function.

If the user is browsing an image as shown in FIG. 9A and wants to see the facial expression of a person in this image, the screen display should be switched to the state shown in FIG. 9C. Thus, detailed display is realized using a display with a limited display area.

Here, it is difficult to automatically determine which part of the image the user is interested in for zoom display. Therefore, first, the image of FIG. 9A is enlarged and displayed according to the zoom request (enlargement magnification) of the user. At this time, as shown in FIG. 9B, the central portion of the image is enlarged and displayed, and when the screen is scrolled to the upper left by the user's operation, the screen display shown in FIG. 9C is obtained.

[0006]

However, in the conventional method, it is necessary to specify the image portion to be enlarged and displayed each time, and the operation is troublesome.

An object of the present invention relates to an image display processing apparatus, an image display processing method, a program and a storage medium capable of enlarging and displaying a part of an image by a simple operation.

[0008]

In order to achieve the above object, the present invention is an image display processing apparatus, wherein a first display mode in which the entire image is displayed on the display device and a part of the image is displayed on the display device. Switching means for selectively switching between a second display mode for enlarging display and a display position for defining the enlarged portion in association with the image for which a portion is enlarged in the second display mode is stored. It is characterized by having a storage means and a control means for controlling so as to magnify and display a part defined by the display position stored in the storage means in the second display mode.

Further, in the above image processing apparatus, the control means is enlarged and displayed in the second display mode when the display mode is switched from the second display mode to the first display mode. The display position defining a part of the image is written in the storage means.

Further, in the image display processing apparatus, in the second display mode, there is provided display position changing means for changing a display position defining a part of the image to be enlarged and displayed based on a user's instruction. The means writes the changed display position in the storage means every time the display position is changed by the display position changing means.

In the image display processing apparatus, there is provided enlargement ratio setting means for variably setting the enlargement ratio for a part of the image in the second display mode, and the control means has the second display mode. In some cases, the control is performed so that a part of the image is enlarged and displayed according to the enlargement ratio set by the enlargement ratio setting means.

Further, in the above image display processing apparatus, the control means writes the display position in the storage means each time the enlargement ratio is changed by the enlargement ratio setting means.

Further, in the image display processing apparatus, the display position includes values of x and y coordinates defined on the image displayed in the first display mode, an enlarged display width and an enlarged display height. It is characterized by

Further, in the above image display processing device, the storage means stores the enlargement ratio set by the enlargement ratio setting means.

Further, in the image display processing apparatus, the storage means stores an initial display position defining a central portion of the image as an enlarged display portion of the image, and the control means stores the memory. When the means does not have a display position corresponding to the image displayed in the second display mode, the initial display position is read from the storage means as the display position.

Further, in order to achieve the above object, the present invention selectively selects a first display mode in which the entire image is displayed on the display device and a second display mode in which a part of the image is enlarged and displayed on the display device. The image display of the image display processing device, which includes a switching unit for switching to the image display unit and a storage unit that stores a display position that defines the enlarged portion of the image in association with the image of which the enlarged portion is displayed in the second display mode. In the processing method, when the display mode is switched from the first display mode to the second display mode, the display position corresponding to the image displayed in the second display mode from the storage means is changed. It is characterized by including a step of reading out and controlling so as to magnify and display a part defined by the read-out display position.

In order to achieve the above object, the present invention is a program, which is a first display mode for displaying the entire image on a display device and a second display for enlarging and displaying a part of the image on the display device. A switching module that selectively switches between modes and a corresponding image that is partially enlarged in the second display mode when the display mode is switched from the first display mode to the second display mode. The display position corresponding to the image displayed in the second display mode is read out from the storage means that additionally stores the display position defining the enlarged display part and is defined by the read display position. And a control module for controlling so as to magnify and display a part.

Further, in order to achieve the above object, the present invention is a storage medium, characterized in that the above program is stored.

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

(First Embodiment) FIG. 1 is a block diagram showing the configuration of a computer system that realizes an image display processing apparatus according to the first embodiment of the present invention. FIG. 2 is an external view of the remote controller 112 shown in FIG. It is a figure which shows a structure typically.

As shown in FIG. 1, a computer system which constitutes an image display device includes a CPU 101 and a CP.
U101 is a BIOS stored in the ROM 104
An OS that controls peripheral devices based on (Basic Input Output System) and is stored in the hard disk device 106.
(Operating System) Launch the program. CPU
The work area 101 is provided by the RAM 105.

The CPU 101 has a keyboard 102 and a display unit 1 together with the ROM 104 and the RAM 105.
03, a hard disk 106 device, a floppy (registered trademark) disk device 107, a printer 108, a network I / F (interface) 109, a video capture 110, and a remote controller (remote control) 112 are connected via an internal bus.

The keyboard 102 inputs data, instructions and the like to the CPU 101. This keyboard 10
A mouse 102a used for input operation is connected to 2. The display unit 103 is a CRT (Cathode Ray Tub).
e) and a liquid crystal display, etc. to display various screens. The hard disk 106 device and the floppy (registered trademark) disk device 107 constitute an external storage device for storing various software and data used for the file system of the system.

The network I / F 109 is a LAN (Lo
cal Area Network) or WAN (Wide Area Networ)
k), and data files such as computer programs and digital images can be exchanged with other computer systems through this network I / F 109. The programs and data are recorded in the hard disk device 106 or directly expanded in the RAM 105 and executed.

The video capture 110 is for digitizing the moving image signal from the video deck 111 and capturing it as a still image signal in the computer system. In the present embodiment, the video deck 111 is used as a device for transmitting a moving image signal, but an LD player, a DVD player, a video camera, a TV tuner or the like may be used instead.

The remote controller 112 is used to remotely control the system. For example, as shown in FIG. 2, a movement key 100 for instructing movement up, down, left and right.
1, a cancel key 1002 and an OK key 1003. The remote controller 112 is connected to the computer system by a wired cable 1004. Note that, instead of the wired cable 1004, the remote controller 112 and the computer system may be connected using wireless communication.

In this embodiment, the hard disk device 10
6 stores a program for constructing an image display processing system (image display processing apparatus). The image display processing system constructed by this program is the first display for displaying the entire image on the display unit 103. The process of selectively switching between the mode and the second display mode in which a part of the image is enlarged and displayed (zoom display) on the display unit 103, and a part of the image to be enlarged and displayed based on the user's operation in the second display mode. A process of changing the specified display position, a process of storing a display position in the RAM 105 or the hard disk device 106 that defines a part of the image enlarged and displayed in the second display mode in association with the image, and during the second display mode. A process of enlarging and displaying a part of the image defined by the changed display position according to the change of the display position; When switching the display mode from the first display mode to the second display mode, the display position corresponding to the image to be displayed in said second display mode RAM105
Alternatively, a process of reading out from the hard disk device 106 and enlarging and displaying a part defined by the read-out display position in the image is executed. Here, the image data is stored in the hard disk device 106, and each image data is encoded according to a still image compression format represented by JPEG. That is, in the image display processing system, each of the above image data is decoded and displayed on the display unit 103, or zoomed on a part of the screen.

Next, the zoom display operation in this embodiment will be described with reference to FIGS. Figure 3
FIG. 4 is a diagram for explaining a position specifying method for zoom display in the image display processing system built on the personal computer in FIG. 1, and FIG. 4 is a zoom in the image display processing system built on the personal computer in FIG. 5 is a flowchart showing the display operation, FIG. 5 is a flowchart showing the zoom display processing of step S307 of FIG. 4, and FIG. 6 is a flowchart showing the coordinate value updating processing of step S402 of FIG.

First, a method of specifying a position for zoom display will be described. Here, as shown in FIG. 3, it is assumed that the image data has a size of horizontal W pixels and vertical H pixels, and x pixels in the horizontal direction and y pixels in the vertical direction are counted in pixel units from the upper left of the image data. From the position, an area having a size of w pixels (zoom width) in the horizontal direction and h pixels (zoom height) in the vertical direction is displayed by enlarging the display area of the display unit 103 to the full size. x, y, w, h) zoom display ”. According to this notation, FIG.
The image of (a)) can be described as (0, 0, W, H), and the image of FIG. 9B can be described as (W / 4, H / 4, W / 2, H / 2).

The position designation during zoom display is performed by the keyboard 102, the mouse 102a or the remote controller 1.
It is possible to perform the above-mentioned position designation using the remote controller 112.

When the OK key 1003 of the remote controller 112 is pressed in the normal display state as shown in FIG. 9A, a zoom display of 200%, that is, (x, y, W /
2, H / 2). However, 0 ≦ x <
The relationship of W / 2, 0 ≦ y <H / 2 is established. The operation at this time will be described. As shown in FIG. 4, first, in step S301, the value of the coordinate x corresponding to the displayed image is read from the hard disk device 106. This value is the value written in the hard disk device 106 according to the flowchart described later when the zoom display is performed previously. If zoom display has never been performed, -1 is stored as the initial value.

Next, in step S302, the value of the coordinate y corresponding to the displayed image is read from the hard disk device 106, and in the following step S303, it is determined whether the value of the read coordinate x is 0 or more. judge.
Here, if the value of the coordinate x is smaller than 0, it means that this value has never been zoom-displayed. Therefore, in step S304, in order to zoom the image to the horizontal screen center, the coordinate x Is set to the default value of W / 4, and the process proceeds to step S305. In contrast,
If the value of the coordinate x is 0 or more, the above step S304 is skipped and the process proceeds to step S305.

In step S305, it is determined whether or not the value of the coordinate y is 0 or more. Here, if the value of the coordinate y is smaller than 0, it means that this value has never been zoom-displayed. Therefore, in step S306, the coordinate is set in order to zoom the image in the vertical screen center.
The value of y is set to the default value of H / 4, and step S3
Proceed to 07. On the other hand, if the value of the coordinate y is 0 or more, the above step S306 is skipped and step S3 is performed.
Proceed to 07.

In step S307, (x, y, W /
2, H / 2) is displayed in a zoomed state, and this processing ends.

In the zoom display process of step S307, as shown in FIG. 5, first, in step S401, it is determined whether or not the move key 1001 is pressed.
Here, in step S402, the values of the coordinates x and y are updated. Details of updating the coordinate values will be described later. Then, in step S403, the display screen is updated according to the updated coordinate values, and the process returns to step S401.

In step S401, the move key 1001
If it is determined that is not pressed, step S
At 404, it is determined whether the cancel key 1002 has been pressed. Here, if the cancel key 1002 has not been pressed, the process returns to step S401. On the other hand, when the cancel key 1002 is pressed, in step S406, the value of the coordinate x of the current zoom display is associated with the displayed image data and written in the hard disk device 106, and the subsequent step S40.
In step 7, the value of the coordinate y of the current zoom display is associated with the displayed image data and written in the hard disk device 106. Then, this process ends.

Here, as a method of associating the image data with the display coordinates, a relational database may be used, or the display coordinates are embedded in a part of the image file as image metadata (for example, ROI according to the DIG35 standard). You may do it.

From the user's point of view of the processing according to this flowchart, the display area seems to move little by little each time the move key 1001 is pressed. In addition, the above step S
If the determination of “whether the move key 1001 is pressed” in 401 is replaced with the determination of “whether the activation key 1001 is pressed”, the user can move the move key 1001.
The display area moves continuously while pressing 1 continuously, and when the move key 1001 is released, the movement seems to stop. This can be easily realized by configuring the application to perform the above determination.

Next, the updating of the coordinate values in step S402 will be described with reference to FIG.

In updating the coordinate values in the above step S402, as shown in FIG. 6, first, in step S501, it is determined whether or not the right key of the move key 1001 is pressed. Here, when the right key of the move key 1001 is pressed, a constant α is added to the value of the coordinate x in step S502. This constant α is a constant that defines the horizontal scroll speed, and the larger this value, the faster the scroll speed. When the constant α = 1, the screen scrolls pixel by pixel. Then, in step S503, it is determined whether the value of the coordinate x is W / 2 or more. When the value of the coordinate x is smaller than W / 2, this processing ends. On the other hand, when the value of the coordinate x is W / 2 or more, the value of the coordinate x is set to W in step S504.
/ 2-1 is set, and this processing is ended.

In step S501, the movement key 1001 is moved.
If it is determined that the right key of is not pressed, it is determined in step S505 whether the left key of the move key 1001 is pressed. Here, the move key 100
When the left key of 1 is pressed, a constant value α is subtracted from the value of the coordinate x in step S506, and it is determined whether or not the value of the coordinate x is smaller than 0 in the following step S507. If the value of the coordinate x is not smaller than 0, this processing ends. On the other hand, when the value of the coordinate x is smaller than 0, the value of the coordinate x is set to 0 in step S508, and this processing ends.

In step S505, the movement key 1001 is moved.
If it is determined that the left key of is not pressed, it is determined in step S509 whether the lower key of the move key 1001 is pressed. Here, step S51
At 0, the constant β is added to the value of the coordinate y. Here, the constant β is a constant that defines the vertical scroll speed, and the larger this value, the faster the scroll speed. When the constant β = 1, the screen scrolls pixel by pixel.
Then, in step 511, the value of the coordinate y is H / 2.
Whether or not it is determined, and when the value of the coordinate y is smaller than H / 2, this processing is ended. On the other hand, when the value of the coordinate y is H / 2 or more, the value of the coordinate y is set to H / 2-1 in step S512, and this processing ends.

In step S509, the move key 1001
If it is determined that the down key is not pressed, then in step S513, it is determined whether the up key of the move key 1001 is pressed. Here, the move key 100
When the upper key of 1 is not pressed, this process ends. On the other hand, when the up key of the move key 1001 is pressed, a constant β is subtracted from the coordinate y in step S514, and it is determined in step S515 whether the value of the coordinate y is smaller than 0. When the value of the coordinate y is 0 or more, this processing ends. On the other hand, the coordinate y
When the value of is smaller than 0, the value of the coordinate y is set to 0, and this processing ends.

From the user's point of view, the above image display processing is
It seems to behave as follows.

First, when the image being viewed is zoomed in for the first time, the system cannot determine which part of the image the user is considering zooming.
Zoom in on the center of the image. Then, the user scrolls to a desired position by operating the remote controller 112, and returns to the normal (non-zoom) display when it is no longer needed. At this time, the system stores the zoom position of the last displayed image. When the same image is zoom-displayed after the second time, the zoom position of the previously displayed image is automatically zoomed in. As a result, it is possible to save the user the trouble of performing the scroll operation each time the display is performed. That is, in the present embodiment, a part of the image can be enlarged and displayed by a simple operation.

(Second Embodiment) Next, a second embodiment of the present invention will be described with reference to FIGS. 7 and 8. 7 and 8 are flowcharts showing the zoom display operation in the image display processing apparatus according to the second embodiment of the present invention.

In this embodiment, the zoom magnification is set to a predetermined value (20
This is different from the first embodiment in which the zoom ratio is fixed to 0%) in that the zoom magnification can be changed. In this embodiment,
The configuration is the same as that of the first embodiment, and description thereof will be omitted. Also, in the following description, the same reference numerals will be used.

Specifically, as shown in FIG. 7, first, in step S601, the value of the coordinate x corresponding to the displayed image is read from the hard disk device 106. This value was written in the hard disk device 106 when zoom display was previously performed. If the zoom display has never been displayed, the initial value is -1.
Is stored. Then, step S60
In 2, the value of the coordinate y corresponding to the displayed image is read from the hard disk device 106. This coordinate y
Similarly to the value of the coordinate x, the value of is written in the hard disk device 106 when the zoom display was previously performed. If the zoom display has never been performed, -1 is stored as the initial value.

Next, in step S603, the value of the coordinate w corresponding to the displayed image is read from the hard disk device 106, and in the following step S604, the value of the coordinate h corresponding to the displayed image is read from the hard disk device 106. read out. Then, step S605
In, it is determined whether or not the value of the coordinate x is 0 or more. Here, if the value of the coordinate x is smaller than 0, it indicates that this value has never been zoom-displayed, so in step S606, the default value H / 4 is set to the value of the coordinate x. Then, step S607
Then, the default value H / 4 is set to the value of the coordinate y. Next, in step S608, the default value W / 2 is set for the zoom width w, and in the subsequent step S609, the default value H / 2 is set for the zoom height h. And FIG.
Go to step S610 shown in.

In step S610, (x, y, w,
Then, in step S611, it is determined whether or not the OK key 1003 is pressed. Where O
When the K key 1003 is pressed, step S
At 612, the constant γ is added to the value of coordinate x. This constant γ is a constant that defines the zoom-in speed in the x direction, and the larger this value, the faster the zoom-in speed in the x direction. Then, in step S613, the constant δ is added to the value of the coordinate y. This constant δ is a constant that defines the zoom-in speed in the y direction, and the larger this value, the faster the zoom-in speed in the y direction.

Then, in step S614, a value that is twice the constant γ is subtracted from the zoom width w, and the subsequent step S6.
At 15, a value twice the constant δ is subtracted from the zoom height h. Then, the process returns to step S610.

In step S611, the OK key 1003 is clicked.
If it is determined that is pressed, step S616
At step S617, the zoom width w is associated with the display image and written in the hard disk device 106.
Then, the zoom height h is associated with the display image and written in the hard disk device 106.

As described above, in this embodiment, the user can control the zoom magnification at the time of zoom display, and at the time of the second and subsequent zoom displays, the magnification and position at the previous zoom display are displayed. I will zoom in to
It is possible to reduce the user's time and effort required for zoom display.

In each of the above embodiments, the coordinate value is written when the image display mode is switched from the zoom display to the whole display, but the present invention is not limited to this, and the coordinate value is written every time the position during zoom display is changed. The coordinate values may be written. That is, step S402 (shown in FIG. 5)
Alternatively, the coordinate value may be written each time there is a scroll instruction from the remote controller 112.

The present invention supplies a storage medium storing a program code of software for realizing the functions of the above-described embodiments to a system or apparatus, and the computer (or CPU or MP of the system or apparatus).
It is needless to say that U) is also achieved by reading and executing the program code stored in the storage medium.

In this case, the program code itself read from the storage medium realizes the function of the above-described embodiment, and the storage medium storing the program code constitutes the present invention.

As a storage medium for supplying the program code, for example, a floppy (registered trademark) disk, hard disk, optical disk, magneto-optical disk, C
A D-ROM, a CD-R, a magnetic tape, a non-volatile memory card, a ROM, etc. can be used.

Further, by executing the program code read by the computer, not only the functions of the above-described embodiment are realized, but also the OS (operating system) running on the computer based on the instruction of the program code. It goes without saying that this also includes the case where the above) performs a part or all of the actual processing, and the processing realizes the functions of the above-described embodiments.

Further, after the program code read from the storage medium is written in the memory provided in the function expansion board inserted into the computer or the function expansion unit connected to the computer, based on the instruction of the program code, It goes without saying that a case where a CPU or the like included in the function expansion board or the function expansion unit performs some or all of the actual processing and the processing realizes the functions of the above-described embodiments is also included.

[0060]

As described above, according to the present invention,
The display position defining the enlarged portion is stored in the storage means in association with the image which is enlarged in the second display mode, and the display mode is changed from the first display mode to the second display mode. At the time of switching, the display position corresponding to the image displayed in the second display mode is read out from the storage means, and a part of the image defined by the read-out display position is enlarged and displayed, which is a simple operation. , A part of the image can be enlarged and displayed.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of a computer system that realizes an image display processing device according to a first embodiment of the present invention.

FIG. 2 is a diagram schematically showing an external configuration of a remote controller 112 shown in FIG.

FIG. 3 is a diagram for explaining a position specifying method for zoom display in the image display processing system built on the personal computer in FIG.

4 is a flowchart showing a zoom display operation in the image display processing system built on the personal computer in FIG.

5 is a flowchart showing zoom display processing of step S307 of FIG. 4. FIG.

FIG. 6 is a flowchart showing coordinate value update processing in step S402 of FIG.

FIG. 7 is a flowchart showing a zoom display operation in the image display processing device according to the second embodiment of the present invention.

FIG. 8 is a flowchart showing a zoom display operation in the image display processing device according to the second embodiment of the present invention.

FIG. 9 is a diagram showing an example of a screen when a part of an image is enlarged and displayed using a conventional zoom function.

[Explanation of symbols]

101 CPU 102 keyboard 103 display 104 ROM 105 RAM 106 hard disk drive 107 floppy disk device 110 video capture 111 VCR 112 Remote controller 1001 Move key 1002 cancel key 1003 OK key

─────────────────────────────────────────────────── ─── Continuation of front page (51) Int.Cl. ⁷ Identification code FI theme code (reference) G09G 5/36 G09G 5/36 520F H04N 1/393 5/00 555G 5/36 520P F term (reference) 5B050 AA10 BA06 BA15 CA07 EA05 EA12 EA13 FA02 FA09 5B057 AA20 BA24 CA12 CB12 CC03 CD05 CH01 CH11 CH14 DA16 5C076 AA02 AA21 BA05 CA02 CB01 CB02 5C082 AA01 AA22 BA01 CAT05 CA02 CA02 CA05 CA05 CA42 CA54 FB43

Claims (18)

[Claims] 1. A switching means for selectively switching between a first display mode for displaying the entire image on a display device and a second display mode for displaying a part of the image on the display device in an enlarged manner, and the second display. A storage unit that stores a display position that defines a part that is enlarged and displayed in association with an image that is partly enlarged and displayed in a mode; and a display position that is stored in the storage unit in the second display mode. An image display processing apparatus, comprising: a control unit that controls so as to magnify and display a part of the image display processing apparatus. 2. The control means defines a part of an image enlarged and displayed in the second display mode when the display mode is switched from the second display mode to the first display mode. The image display processing apparatus according to claim 1, wherein the display position is written in the storage means. 3. In the second display mode, there is provided display position changing means for changing a display position defining a part of the image to be enlarged and displayed based on a user's instruction, and the control means changes the display position. The image display processing apparatus according to claim 1, wherein each time the display position is changed by the means, the changed display position is written in the storage means. 4. An enlargement ratio setting means for variably setting an enlargement ratio for a part of an image in the second display mode, wherein the control means is configured to perform the enlargement ratio setting means in the second display mode. The image display processing apparatus according to claim 1, wherein the image display processing apparatus controls to enlarge and display a part of the image according to the enlargement ratio set by. 5. The image display processing apparatus according to claim 4, wherein the control unit writes the display position in the storage unit every time the enlargement ratio is changed by the enlargement ratio setting unit. 6. The display position includes values of x, y coordinates and an enlarged display width and an enlarged display height defined on an image displayed in the first display mode. 1. The image display processing device according to 1. 7. The image display processing device according to claim 4, wherein the storage unit stores the enlargement ratio set by the enlargement ratio setting unit. 8. The storage means stores an initial display position defining a central portion of the image as a part of the image to be enlarged and displayed, and the control means stores the second display in the storage means. The image display processing apparatus according to claim 1, wherein when there is no display position corresponding to the image displayed in the mode, the initial display position is read from the storage means as the display position. 9. A switching means for selectively switching between a first display mode in which the entire image is displayed on the display device and a second display mode in which a part of the image is enlarged and displayed on the display device,
An image display processing method for an image display processing apparatus, comprising: a storage unit that stores a display position that defines a portion that is enlarged and displayed in association with an image that is partially enlarged and displayed in the second display mode, When the display mode is switched from the first display mode to the second display mode, the display position corresponding to the image displayed in the second display mode is read from the storage unit, and the read position is read. An image display processing method comprising the step of controlling so that a part defined by the display position is enlarged and displayed. 10. When the display mode is switched from the second display mode to the first display mode, the display position that defines a part of the image enlarged and displayed in the second display mode is stored in the memory. 13. The image display processing method according to claim 12, further comprising a step of writing in the means. 11. The image processing apparatus comprises display position changing means for changing a display position defining a part of the image to be enlarged and displayed based on a user's instruction in the second display mode. 10. The image display processing method according to claim 9, wherein each time the display position is changed by the means, the changed display position is written in the storage means. 12. The image display processing device includes an enlargement ratio setting unit that variably sets an enlargement ratio for a portion of an image in the second display mode, and in the second display mode, the enlargement ratio setting unit. 10. The image display processing method according to claim 9, wherein control is performed so that a part of the image is enlarged and displayed according to the enlargement ratio set by the means. 13. The image display processing method according to claim 12, wherein the display position is written in the storage unit each time the magnification ratio is changed by the magnification ratio setting unit. 14. The display position includes x, y coordinate values and an enlarged display width and an enlarged display height defined on an image displayed in the first display mode. 9. The image display processing method according to item 9. 15. The image display processing method according to claim 13, wherein the storage unit stores the enlargement ratio set by the enlargement ratio setting unit. 16. The storage means stores an initial display position that defines a central portion of the image as a part of the image to be enlarged and displayed, and is displayed in the storage means in the second display mode. 10. The image display processing method according to claim 9, wherein when there is no display position corresponding to the image, the initial display position is read from the storage means as the display position. 17. A switching module for selectively switching between a first display mode of displaying the entire image on a display device and a second display mode of enlarging and displaying a part of the image on the display device; and the first display. When the display mode is switched from the mode to the second display mode, a display position that defines the enlarged portion is stored in association with the image that is enlarged in the second display mode. A control module for reading out a display position corresponding to the image displayed in the second display mode from the storage means and controlling so as to magnify and display a part defined by the read display position. Characteristic program. 18. A computer-readable storage medium on which the program according to claim 17 is stored.