JP4760493B2 - Thumbnail display method, thumbnail display program, and thumbnail display device - Google Patents

Description

The present invention relates to a thumbnail display method , a thumbnail display program , and a thumbnail display device having thumbnail listability and good identification.

  Conventionally, in a graphic display device, when a user selects a desired image from a large number of images stored in a storage medium, the original image is reduced to a predetermined size and displayed as a list as a thumbnail, A thumbnail display method for selecting an image from the thumbnails is generally used (see, for example, Patent Document 1).

  However, in this method, a predetermined number of thumbnails among all thumbnails are displayed on one screen, so if the total number of thumbnails exceeds the number that can be displayed on one screen, the user scrolls the screen or switches pages. I needed to see the thumbnails.

Therefore, in order to optimize this, a method of determining and displaying the size according to the number of thumbnails to be displayed (see, for example, Patent Document 2), and a thumbnail display area for increasing the number of thumbnails to be displayed. A method for controlling the width has been proposed (see, for example, Patent Document 3).
JP 2001-111963 A Japanese Patent Laid-Open No. 10-65901 JP 2003-263148 A

  For example, when searching for a desired thumbnail from a large number of thumbnails arranged in time series, for example, the user often searches for a memory such as when the thumbnail image was shot, and the desired thumbnail is It is very easy to find if you know where it is located.

  However, in the thumbnail display method described in Patent Document 1, since the user needs to view the thumbnail while scrolling the screen or switching the page as described above, the desired thumbnail is located in any part of the thumbnail. However, it takes a lot of time and effort to find the desired thumbnail.

  Further, in the graphic display method described in Patent Document 2, the display area is determined and displayed according to the number of thumbnails to be displayed. Therefore, when the number of thumbnails to be displayed becomes enormous, the display area of the displayed thumbnails becomes small. Thus, the user cannot identify individual thumbnails, and it is difficult to select a desired thumbnail.

  Furthermore, in the graphic display method described in Patent Document 3, since the width of the thumbnail display area is controlled according to the number of thumbnails, when the number of thumbnails to be displayed is enormous, thumbnails close to both ends of the screen have their left or right edges. Only a part can be displayed. For this reason, it is difficult for the user to identify thumbnails close to both ends of the screen and select a desired thumbnail.

The present invention has been made in view of the above problems, and a thumbnail display method that improves the identification of individual thumbnails while ensuring the listability of thumbnails by increasing the number of thumbnails that can be displayed on the screen at once. An object is to provide a thumbnail display program and a thumbnail display device .

In order to achieve the above object, the first feature of the thumbnail display method according to the present invention is that, when the selected thumbnail display position calculation means selects one thumbnail image among a plurality of thumbnail images, the selected thumbnail display method is selected. A selected thumbnail display position calculating step for calculating the display position of the selected thumbnail image on the screen based on the order corresponding to the thumbnail image and the number of thumbnail images to be displayed on the screen of the display device, and non-selected thumbnail information In the calculation means, the selected thumbnail image calculated in the selected thumbnail display position calculating step is selected between the display position on the screen and at least one vanishing point position preset at a predetermined position on the screen. Each non-thumbnail image as a non-selected thumbnail image Depending on the ranking, and the non-selected thumbnail information calculation step distance is calculated each image size and display position, as the reduction ratio of the image size increases farther from the display position, the thumbnail drawing means, unselected thumbnails For each image, a non-selected thumbnail image with a smaller reduction ratio based on the image size and display position calculated by the non-selected thumbnail information calculating step is displayed on the display device so that it is on the screen, and the selected thumbnail image is displayed. and summarized in that comprising a thumbnail rendering step of displaying in the foreground and the display position on the screen calculated by the selected thumbnail display position calculation step.

In order to achieve the above object, a second feature of the thumbnail display method according to the present invention is that, in addition to the first feature, the selected thumbnail display position calculating step is selected by the selected thumbnail display position calculating means . The x coordinate of the display position on the thumbnail image screen is selected to be a value obtained by dividing the distance from the x coordinate of the leftmost display position of the selected thumbnail to the x coordinate of the rightmost display position of the selected thumbnail by the number of thumbnail images. The gist of the present invention is a thumbnail display method characterized by multiplying the order corresponding to the thumbnail image and adding the x coordinate of the leftmost display position of the selected thumbnail to this value.

In order to achieve the above object, a third feature of the thumbnail display method according to the present invention is that, in addition to the first feature, the selected thumbnail display position calculating step is selected by the selected thumbnail display position calculating means . The y coordinate of the display position on the thumbnail image screen is selected by dividing the distance from the y coordinate of the selected thumbnail bottom end display position to the y coordinate of the selected thumbnail top end display position by the number of thumbnail images. The gist of the present invention is a thumbnail display method characterized by multiplying the order corresponding to the thumbnail image and adding the y coordinate of the display position of the bottom edge of the selected thumbnail to this value.

According to the thumbnail display method , the thumbnail display program , and the thumbnail display apparatus according to the present invention, it is possible to increase the number of thumbnails that can be displayed on the screen at a time, while ensuring the listability of the thumbnails, and the good identification of each thumbnail. Can also be secured .

  A thumbnail display device to which an embodiment of the present invention is applied will be described below with reference to the drawings.

  In the present embodiment, a thumbnail selected by the user is displayed in the foreground, and another thumbnail to be rendered is displayed in an overlapping manner based on a reduction ratio and a display position corresponding to the distance from the selected thumbnail. A display device will be described as an example.

  FIG. 1 shows a block diagram of a thumbnail display device.

  In FIG. 1, a processor 101 and a main memory 103 in the thumbnail display device 10 are connected to each other via a memory bus 105. An I / O bus 107 is connected to the memory bus 105. A storage unit 115 is connected to the I / O bus 107 via an input / output control unit 109, and an output unit 117 is controlled to output control via the input control unit 111. Display units 119 are connected to each other via the unit 113.

  The processor 101 includes a selected thumbnail display position calculation unit 101a, a non-selected thumbnail information calculation unit 101b, a thumbnail drawing unit 101c, and the like, and executes various processes according to a program such as a thumbnail display program loaded in the main memory 103. . The main memory 103 also stores a thumbnail display program and other data necessary for the processor 101 to execute various processes as appropriate.

  The storage unit 115 is, for example, a semiconductor storage device or a magnetic disk device, and stores a thumbnail display program, image data, thumbnails of image data, and the like.

  The input unit 117 includes operation buttons to which various operation signals are input by the user. For example, the input unit 117 generates an input signal for executing thumbnail display by a user's push button operation, and the input control unit 111, I / O The data is transmitted to the processor 101 via the O bus 107 and the memory bus 105.

  The display unit 119 is a CRT (Cathode Ray Tube) display, a liquid crystal display, or the like, and receives an output signal from the processor 101 via the memory bus 105, the I / O bus 107, and the display control unit 113, and displays a thumbnail or the like. It is.

  The selected thumbnail display position calculation unit 101a of the processor 101 is configured so that, for example, when a desired thumbnail is selected as a reference thumbnail for display from the storage unit 115, both the reference thumbnails are displayed on one screen. The selected thumbnail serving as the reference based on the predetermined arrangement order of thumbnails indicating the order in which the thumbnails are arranged relative to the arrangement of all thumbnails and the number of all thumbnails displayed on one screen. The display position of is determined.

  The non-selected thumbnail information calculation unit 101b of the processor 101 starts from the display position of the selected thumbnail between the display position of the selected thumbnail whose display position is determined by the selection thumbnail display position calculation unit 101a and the vanishing point set on the display screen. The size and display position of a non-selected thumbnail that is not selected are calculated so that the reduction ratio increases as the distance increases.

  The thumbnail rendering unit 101c of the processor 101 reads a thumbnail corresponding to the non-selected thumbnail from the storage unit 115, and based on the size and display position of the read thumbnail calculated by the non-selected thumbnail information calculation unit 101b, The thumbnails corresponding to the selected thumbnails are displayed on the display unit 119 so as to be in the foreground, and the thumbnails corresponding to the selected thumbnails are read from the storage unit 115. It displays on the display part 119 so that it may become the forefront.

  Next, a processing flow according to an embodiment of the present invention will be described with reference to the flowchart of FIG.

  First, the selected thumbnail display position calculation unit 101a of the processor 101 accepts selected thumbnail information when a user selects a desired thumbnail from among a plurality of thumbnails displayed on the display unit 119. For example, the distance from the x coordinate of the leftmost display position of the selected thumbnail on the display screen displaying the thumbnail to the x coordinate of the rightmost display position of the selected thumbnail is divided by the total number of thumbnails to be drawn, corresponding to the selected thumbnail. A value obtained by multiplying the array order and adding the x coordinate of the leftmost display position of the selected thumbnail to this value is determined as the x coordinate of the display position of the selected thumbnail and stored in the memory 103 (step S1).

  Specifically, the selected thumbnail display position calculation unit 101a calculates the x coordinate of the display position of the selected thumbnail as follows.

  When the x coordinate of the leftmost display position of the selected thumbnail is thumb_x_min and the x coordinate of the rightmost display position of the selected thumbnail is thumb_x_max, the x coordinate of the selected thumbnail is the distance from thumb_x_min to thumb_x_max as the total number of thumbnails to be drawn. It can be expressed as a value obtained by adding the divided values.

That is,
thumb_x = thumb_x_min + (thumb_x_max- thumb_x_min) * (n / thumb_num) (Formula 1)
Can be expressed as Here, thumb_num is the total number of thumbnails to be drawn, n is the thumbnail arrangement order indicating the order in which all the selected thumbnails as the reference are arranged with respect to the arrangement of all thumbnails displayed on one screen, and 0 Indicates the number from the beginning of the thumbnail starting with.

  The selected thumbnail display position calculation unit 101 a calculates the x coordinate of the display position of the selected thumbnail using the above (Equation 1), and stores the calculated x coordinate data of the display position of the selected thumbnail in the memory 103.

  Here, the leftmost display position of the selected thumbnail is the position of the thumbnail displayed near the left edge on the screen when the first thumbnail is selected, and the rightmost display position of the selected thumbnail is near the right edge of the screen when the last thumbnail is selected. The position of the thumbnail to be displayed. These positions can be arbitrarily set, and the selected thumbnail is displayed on a line connecting the rightmost display position and the leftmost display position.

  Further, the y-coordinate direction of the display position of the selected thumbnail is stored in the storage unit 115 as thumb_y1, which is a fixed value with the lower left corner of the display screen as the origin, and the size of the selected thumbnail is also vertical and horizontal. They are stored in the storage unit 115 as thumb_w1 and thumb_h1, which are fixed values, respectively.

  As for the y-coordinate direction of the display position of the selected thumbnail, as in the x-axis direction, for example, the distance from the y-coordinate of the lowermost display position of the selected thumbnail to the y-coordinate of the uppermost display position of the selected thumbnail is a plurality of thumbnail images. The value divided by the number of is multiplied by the order corresponding to the selected thumbnail image, and the value obtained by adding the y coordinate of the lowermost display position of the selected thumbnail is determined as the y coordinate of the display position of the selected thumbnail. This value may be stored in the memory 103.

  Next, the non-selected thumbnail information calculation unit 101b of the processor 101 sets the reduction ratio and the offset ratio for determining the display position of the non-selected thumbnails in the head direction and the tail direction, which are drawing targets other than the selected thumbnail (step S2). . Here, the offset rate and the reduction rate have a relationship of “offset rate = 1−reduction rate”, and the reduction rate increases as the offset rate increases. For example, if the offset rate is 1/3, a thumbnail is drawn at a position closer to the vanishing point by 1/3 on a line segment drawn from the selected thumbnail position toward an arbitrary vanishing point on the screen. It will be. When the offset rate is 1/3, the reduction rate is 2/3, and drawing is always performed with a size of 2/3 with respect to the thumbnails adjacent in the selected thumbnail direction. When the offset rate is 2/3, The reduction ratio is as large as 1/3.

  By setting the offset rate in this way, the reduction rate increases as the distance from the display position of the selected thumbnail increases from the display position of the selected thumbnail to at least one vanishing point set on the display screen. In addition, the size and display position of the non-selected thumbnail can be calculated.

These offset rate and reduction rate need to be set in consideration of the rate at which thumbnails are visible so that a sufficient portion for identifying the thumbnails can be seen in front of the user. The thumbnail view ratio thumbnail_ratio is, for example, in the x-coordinate direction, where the distance from the selected thumbnail to the vanishing point is thumb_x, the thumbnail width is thumb_w, the offset rate is offset, and the thumbnail reduction rate is scale.
thumb_ratio = (thumb_x * offset) / (thumb_w * scale) (Formula 2)
Can be expressed as

  This offset rate may be set to the offset rate received from the input unit 117 by the user's operation, or a lower limit value is provided for the thumbnail thumbnail ratio to be displayed, thumbnail_ratio. The non-selected thumbnail information calculation unit 101b may calculate and set an offset rate according to the number of thumbnails so as to be equal to or higher than the lower limit value.

  Next, the non-selected thumbnail information calculation unit 101b of the processor 101 sets the size and display position of the thumbnail to be drawn among the thumbnails to be drawn other than the selected thumbnail for each thumbnail based on the offset rate set in step S2. And each data is stored in the main memory 103 (step S3).

  Then, the thumbnail rendering unit 101c reads from the storage unit 115 thumbnails corresponding to non-selected thumbnails from the top thumbnail to the thumbnail adjacent in the head direction of the selected thumbnail, and further displays the size and display corresponding to these thumbnails. The position value is read from the main memory 103, the thumbnail read from the storage unit 115 is reduced based on the read value, and rendered as a non-selected thumbnail on the display screen of the display unit 119 (step S4).

  Next, the non-selected thumbnail information calculating unit 101b calculates, for each thumbnail, the size and display position of the thumbnail to be drawn in the end direction among the thumbnails to be drawn other than the selected thumbnail based on the offset rate set in step S2. Each data is stored in the main memory 103 (step S5).

  Then, the thumbnail drawing unit 101c reads from the storage unit 115 thumbnails corresponding to non-selected thumbnails to be drawn in the end direction among the thumbnails to be drawn other than the selected thumbnail, and the size and display position corresponding to these thumbnails are read. The value is read from the main memory 103, the thumbnail read from the storage unit 115 is reduced based on the read value, and rendered as a non-selected thumbnail on the display screen (step S6).

  Further, the thumbnail drawing unit 101c reads the thumbnail corresponding to the selected thumbnail, the size corresponding to the selected thumbnail, and the display position of the y coordinate from the storage unit 115, and the value of the x coordinate display position corresponding to the selected thumbnail is stored in the main memory. The thumbnail read from 103 is reduced, and the thumbnail read from the storage unit 115 is reduced based on the read value, and rendered as a selected thumbnail on the display screen (step S6).

  As described above, when the selected thumbnail display position calculation unit 101a selects a desired thumbnail from the stored in the storage unit 115 as a reference thumbnail for display by the processing in steps S1 and S6, Based on the arrangement order of thumbnails indicating the order in which the thumbnails serving as the reference are all arranged relative to the arrangement of all thumbnails displayed on one screen, and the number of all thumbnails displayed on one screen. The display position of the selected thumbnail is determined, and the thumbnail drawing unit 101c reads a thumbnail corresponding to the selected thumbnail from the storage unit 115, and the read thumbnail is a predetermined size at the position determined by the selected thumbnail display position calculating unit 101a. Can be displayed on the display unit 119 so as to be in the foreground.

  In addition, by the processing of steps S2 to S6, the non-selected thumbnail information calculation unit 101b is between the display position of the selected thumbnail whose display position is determined by the selection thumbnail display position calculation unit 101a and the vanishing point set on the display screen. The size and the display position of the unselected non-selected thumbnail are calculated so that the reduction ratio increases as the distance from the display position of the selected thumbnail increases, and the thumbnail drawing unit 101c corresponds to the non-selected thumbnail. A thumbnail is read from the storage unit 115, and the read thumbnail is displayed on the display unit 119 based on the size and display position calculated in the non-selected thumbnail information calculation step 101b so that the smaller reduction ratio is in front. it can.

  In the embodiment of the present invention, the non-selected thumbnail is displayed on a straight line from the selected thumbnail to the vanishing point, but the non-selected thumbnail is displayed on a curve such as a quadratic function connecting the selected thumbnail and the vanishing point. You can also.

  In addition, when a user selects a desired thumbnail from among those stored in the storage unit 115 as a reference thumbnail, the arrangement of all thumbnails in which the reference thumbnail is displayed on one screen. A selection thumbnail display position calculation step for determining the display position of the selected thumbnail as a reference based on the thumbnail arrangement order indicating the order of the thumbnails and the number of all thumbnails displayed on one screen, and a selection Select so that the reduction ratio increases as the distance from the display position of the selected thumbnail increases from the display position of the selected thumbnail determined in the thumbnail display position calculation step to the vanishing point set on the display screen. Non-selected thumbnail information calculation step for calculating the size and display position of the unselected thumbnail. Then, the thumbnail corresponding to the non-selected thumbnail is read from the storage unit 115, and based on the size and display position calculated by the non-selected thumbnail information calculating unit 101b, the read thumbnail is set to be in the foreground. The display unit 119 displays the thumbnail corresponding to the selected thumbnail from the storage unit 115, and displays the read thumbnail at the position determined in the selected thumbnail display position calculation step in a predetermined size so as to be in the foreground. The thumbnail display method can also be realized by installing and executing a thumbnail display program to be executed as a thumbnail drawing step displayed on 119 in a computer.

  3 to 5 are examples of display screens of the display unit in the present embodiment.

  In FIG. 3, nine thumbnails from the thumbnail 301 to the thumbnail 309 are displayed in the thumbnail display screen 11, and the thumbnail 305 is currently selected.

  Each thumbnail is displayed between the currently selected thumbnail 305 and the vanishing points 12 and 13 such that the reduction ratio increases as the distance from the display position of the selected thumbnail 305 increases. Here, the vanishing point is a vanishing point in a two-point perspective view, and is a point that converges when the number of thumbnails to be drawn increases.

  In the display example shown in FIG. 3, the overlapping ratio of thumbnails is set so as to hide half of the width or height of each thumbnail. That is, in all the thumbnails, the user can see more than 3/4 of the area of the thumbnail, and even in the thumbnail 301 or the thumbnail 309 that is far away from the currently selected thumbnail 305, it is an important part for image identification. This makes it easier to recognize the image content without hiding the image. In particular, the two sides of the x-coordinate and y-coordinate directions are always visible from one corner of the thumbnail, so the user guesses the entire image rather than simply hiding the thumbnail in the x-coordinate direction or y-coordinate direction. This makes it easier to grasp the contents of thumbnails.

  Here, for example, when two thumbnails 303 adjacent to the left of the thumbnail 305 are selected by a cursor operation by the user, each thumbnail is displayed on the display screen 11 as shown in FIG. 4 according to the embodiment of the present invention.

  In FIG. 4, the selected thumbnail 303 is displayed in the foreground. The y-coordinate of the position where the thumbnail 303 with the lower left corner of the display screen 11 as the origin is displayed is the same as that of the thumbnail 305 in FIG. 3, but the display position of the x-coordinate is determined by the selected thumbnail display position calculation means 101a. It is determined.

  Further, FIG. 5 shows an example of the thumbnail display screen 11 when the top thumbnail 301 is selected, for example, by a cursor operation by the user.

  In this case, according to the embodiment of the present invention, the thumbnail 301 is displayed at the leftmost display position of the selected thumbnail on the thumbnail display screen 11. Here, the leftmost display position of the selected thumbnail means the position of the thumbnail displayed near the left end on the screen when the first thumbnail is selected as shown in FIG. The thumbnails 302 to 309 are displayed between the selected thumbnail 301 and the vanishing point 13 such that the reduction ratio increases as the distance from the display position of the selected thumbnail 301 increases. At this time, the vanishing point 12 is not used, and only the vanishing point 13 is used.

  In the process of changing the display state between FIG. 3, FIG. 4, and FIG. 5, each thumbnail continuously takes a certain time from the current position and size to the changed position and size. It is also possible to draw a transition process that changes with time.

  As described above, by increasing the number of thumbnails that can be displayed on the screen at a time, it is possible to ensure good distinguishability of individual thumbnails while ensuring thumbnail listability. As a result, the user can easily understand where the thumbnail is located in the whole thumbnail, and can easily understand the image content of each thumbnail.

  In this embodiment, an example of reading a thumbnail stored in advance in the storage unit 115 has been described. However, in addition to this, for example, the storage unit 115 stores full-size image data, and the processor 101 stores the full-size image data. A configuration may be adopted in which image data is read and a thumbnail is generated.

It is a block diagram of a thumbnail display device to which an embodiment of the present invention is applied. It is a processing flow of one embodiment of the present invention. An example of the display screen in the thumbnail display method according to the present invention when the center thumbnail is selected is shown. FIG. 4 shows an example of a display screen in the thumbnail display method according to the present invention when a thumbnail other than the head and the tail is selected from the example of the display screen shown in FIG. 3. An example of the display screen in the thumbnail display method according to the present invention when the first thumbnail is selected is shown.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Thumbnail display apparatus 11 ... Thumbnail display screen 12, 13 ... Vanishing point 101 ... Processor 101a ... Selected thumbnail display position calculation means 101b ... Non-selection thumbnail information calculation means 101c ... Thumbnail drawing means 103 ... Main memory 115 ... Storage part 117 ... Input unit 119 ... display unit

Claims (9)

A thumbnail display method in a thumbnail display device for causing a display device to display a plurality of thumbnail images each ranked,
In the selected thumbnail display position calculation means, when one thumbnail image is selected from among the plurality of thumbnail images, the order corresponding to the selected thumbnail image and the plurality of thumbnails to be displayed on the screen of the display device A selected thumbnail display position calculating step for calculating a display position of the selected thumbnail image on the screen based on the number of images;
In the non-selected thumbnail information calculating means, at least one vanishing point position preset at a predetermined position on the screen from the display position on the screen of the selected thumbnail image calculated by the selected thumbnail display position calculating step Until each thumbnail image other than the selected thumbnail image is selected as a non-selected thumbnail image, the image size reduction ratio increases as the distance from the display position increases. A non-selected thumbnail information calculating step for calculating a size and a display position;
In the thumbnail drawing means, for each non-selected thumbnail image, a non-selected thumbnail image having a smaller reduction ratio based on the image size and display position calculated by the non-selected thumbnail information calculation step is arranged to be on the front of the screen. A thumbnail drawing step of displaying the selected thumbnail image at the display position on the screen calculated by the selected thumbnail display position calculating step and displaying the selected thumbnail image on the forefront.
A thumbnail display method characterized by including: The selected thumbnail display position calculating step includes:
In the selected thumbnail display position calculation means, the x coordinate of the display position of the selected thumbnail image on the screen is the distance from the x coordinate of the leftmost display position of the selected thumbnail to the x coordinate of the rightmost display position of the selected thumbnail. The value divided by the number of thumbnail images is multiplied by the order corresponding to the selected thumbnail image, and this value is determined by adding the x coordinate of the leftmost display position of the selected thumbnail. The thumbnail display method according to claim 1. The selected thumbnail display position calculating step includes:
In the selected thumbnail display position calculation means, the y coordinate of the display position of the selected thumbnail image on the screen is the distance from the y coordinate of the selected thumbnail bottom end display position to the y coordinate of the selected thumbnail top end display position. A value obtained by dividing the value by the number of thumbnail images is multiplied by a rank corresponding to the selected thumbnail image, and the y coordinate of the lowest thumbnail display position of the selected thumbnail is added to this value. The thumbnail display method according to claim 1. A thumbnail display program for causing a computer to realize a function of displaying a plurality of thumbnail images each ranked on a display device,
When one thumbnail image is selected from among the plurality of thumbnail images, based on the order corresponding to the selected thumbnail image and the number of the plurality of thumbnail images to be displayed on the screen of the display device, A selected thumbnail display position calculation function for calculating a display position of the selected thumbnail image on the screen;
The selected thumbnail image calculated by the selected thumbnail display position calculation function is selected from the display position on the screen to at least one vanishing point position preset at a predetermined position on the screen. A thumbnail image other than the selected thumbnail image is selected as a non-selected thumbnail image, and the image size and the display position are calculated so that the reduction ratio of the image size increases as the distance from the display position increases. Select thumbnail information calculation function ,
For each non-selected thumbnail image, the non-selected thumbnail image having a smaller reduction ratio based on the image size and display position calculated by the non-selected thumbnail information calculation function is displayed on the display device so that it becomes the front on the screen. A thumbnail rendering function for displaying the selected thumbnail image at the display position on the screen calculated by the selected thumbnail display position calculation function and in the forefront;
A thumbnail display program for causing a computer to realize the above . The selected thumbnail display position calculation function is:
The x coordinate of the display position of the selected thumbnail image on the screen is obtained by dividing the distance from the x coordinate of the leftmost display position of the selected thumbnail to the x coordinate of the rightmost display position of the selected thumbnail by the number of the plurality of thumbnail images. 5. The thumbnail display program according to claim 4, wherein a value is multiplied by a rank corresponding to the selected thumbnail image, and an x coordinate of the leftmost display position of the selected thumbnail is added to the value and determined. . The selected thumbnail display position calculation function is:
The y coordinate of the display position of the selected thumbnail image on the screen is obtained by dividing the distance from the y coordinate of the selected thumbnail bottom end display position to the y coordinate of the selected thumbnail top end display position by the number of the plurality of thumbnail images. 5. The thumbnail display program according to claim 4, wherein the value is determined by multiplying a value corresponding to the selected thumbnail image and adding the y coordinate of the lowermost display position of the selected thumbnail to the value. .   In a thumbnail display device that displays a plurality of thumbnail images each ranked on the display device,
  When one thumbnail image is selected from among the plurality of thumbnail images, based on the order corresponding to the selected thumbnail image and the number of the plurality of thumbnail images to be displayed on the screen of the display device, Selected thumbnail display position calculating means for calculating the display position of the selected thumbnail image on the screen;
  The selected thumbnail image calculated by the selected thumbnail display position calculating means is selected from a display position on the screen to at least one vanishing point position preset at a predetermined position on the screen. A thumbnail image other than the selected thumbnail image is selected as a non-selected thumbnail image, and the image size and the display position are calculated so that the reduction ratio of the image size increases as the distance from the display position increases. A selection thumbnail information calculation means;
  For each non-selected thumbnail image, the non-selected thumbnail image having a smaller reduction ratio based on the image size and the display position calculated by the non-selected thumbnail information calculating means is placed on the display device so that it becomes the front on the screen. Thumbnail display means for displaying the selected thumbnail image at the display position on the screen calculated by the selected thumbnail display position calculation means and in the forefront,
  A thumbnail display device characterized by comprising:   The selected thumbnail display position calculating means includes:
  The x coordinate of the display position of the selected thumbnail image on the screen is obtained by dividing the distance from the x coordinate of the leftmost display position of the selected thumbnail to the x coordinate of the rightmost display position of the selected thumbnail by the number of the plurality of thumbnail images. 8. The thumbnail display device according to claim 7, wherein a value is multiplied by a rank corresponding to the selected thumbnail image, and the value is determined by adding an x coordinate of the leftmost display position of the selected thumbnail to the value. .   The selected thumbnail display position calculating means includes:
  The y coordinate of the display position of the selected thumbnail image on the screen is obtained by dividing the distance from the y coordinate of the selected thumbnail bottom end display position to the y coordinate of the selected thumbnail top end display position by the number of the plurality of thumbnail images. 8. The thumbnail display device according to claim 7, wherein the value is determined by multiplying a value corresponding to the selected thumbnail image and adding the y-coordinate of the lowermost display position of the selected thumbnail to this value. .

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