JP3163784B2 - Image display method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image display method suitable for use in, for example, editing a video tape or retrieving the contents of a video database.

[0002]

2. Description of the Related Art Conventionally, a series of two-dimensionally displayed moving image data is constructed based on data obtained by sampling one-dimensionally in another direction while sequentially moving each sampling position in one direction. An image display method for displaying a video index (still image) has been proposed (see Japanese Patent Application Laid-Open No. Hei 26-260075).

[0003] This image display method will be briefly described. FIG. 15A shows a video image group 1, which is a video image group 1 in which moving images corresponding to a series of moving image data are arranged in frame units in the time direction t.

The video image group 1 is subjected to a kind of video slice processing in a direction Ht indicated by an arrow in FIG.
A video index (still image) is formed as shown in FIG. That is, the vertical slit 4 set on the frame 2 is scanned at a predetermined speed in the horizontal direction (H direction), and when it reaches the right end of the frame 2, the vertical slit 4 is again moved from the left end (reference position) to H.
The scan is repeated in the direction. Therefore, the vertical slit 4 is scanned in an oblique Ht direction in a three-dimensional space including the time axis.

When the vertical slit 4 scans the video image group 1 from the left end to the right end in the Ht direction, the vertical slit 4 traverses N frames 2 as shown in FIG.
Thereby, one slit-shaped image is sampled for dN frames 2.

[0006] Then, L / dL slit images obtained from each of the N frame groups are connected in the horizontal direction, and a video index screen 6 is formed. Here, L is the horizontal width (number of pixels) of the frame 2, that is, the screen 6, and dL is the width of the vertical slit 4, L / d
It is set so as to satisfy the relational expression of L = N / dN.

FIG. 16 shows a configuration example of a video index display device. In the figure, a reproduction signal from a VTR 11 is supplied to a reduced image data input unit 12. In the reduced image data input unit 12, the video data of each frame reproduced from the VTR 11 is horizontally and vertically compressed to form reduced screen data corresponding to the size of the screen 6 of the video index described above. The reduced image data input unit 12 is connected to a system bus 13.

An index information storage device 15 and an index information output device 16 such as a CRT and a printer are connected to the system bus 13 in addition to a processor 14 having a computer. The processor 14 forms video data constituting the screen 6 of the video index, writes the video data into the storage device 15, reads the video data from the storage device 15, and supplies the video data to the output device 16.

FIG. 17 shows an operation at the time of creating a video index.

First, N, L, dN, dL are set (step 30). For example, N = 150, L = 50, dN =
3, dL = 1.

Next, the reading position parameter X of the slit data is cleared as X = 0 (step 3).
1).

Next, as shown in FIG. 18A, the vertical slit data of X and width dL is read from the left end of the screen from the reduced screen data of a certain frame outputted from the reduced image data input section 12 (step 32).

Next, as shown in FIG. 18B, the read vertical slit data is written to the storage device 15 so as to be at the corresponding time axis position on the video index screen 6 (step 33).

Next, after waiting for the time of the dN frame (step 34), it is determined whether or not the processing is completed (step 3).
5). In this case, the end is determined from the signal indicating the tape end from the VTR 11, the signal of the end instruction from the user, and the like. The same applies to the following. If it is determined that the operation is to be ended, the operation ends. If it is not determined in step 35 that the processing is to be ended, the position parameter X is set to X = X + dL (step 36), and it is determined whether or not the position parameter X satisfies X <L (step 37).

When X <L and not at the right end of the screen,
Returning to step 32, the vertical slit data of X and width dL is read from the left end of the screen from the reduced screen data after dN frames and written in the storage device 15 (step 3).
3). On the other hand, when X <L and at the right end of the screen,
After returning to step 31 and clearing the position parameter X by setting X = 0, the vertical slit data of X and width dL is read from the left end of the screen from the reduced screen data after dN frame and written into the storage device 15 (step 32, 33).

[0016]

In the method described above, V
Regardless of the content of the playback image (moving image) of the TR 11, the reduced screen data is sampled at a constant time and at a constant interval to reconstruct the video index screen (still image) 6. Therefore, the screen 6 of the generated video index
In the case where the short scene is a band reflecting only a part of the image or the length of the scene is a length constituting one screen, the short scene is displayed over the two screens 6 as shown in FIG. And it is difficult to grasp the scene.

Accordingly, the present invention provides an image display method that makes it easy to grasp the length and contents of a scene.

[0018]

According to the first aspect of the present invention,
While moving a series of moving image data displayed two-dimensionally at each sampling position in one direction, one moving image data is moved in another direction.
In an image display method for displaying a still image based on data obtained by dimensional sampling, the sampling position in one direction is reset to a reference position for each scene change.

According to a second aspect of the present invention, a series of moving image data displayed two-dimensionally is based on data obtained by one-dimensionally sampling each moving position in one direction while moving the sampling position in the other direction. In the image display method for displaying a still image configured as described above, the sampling position in the one direction is reset to a position corresponding to the length of a scene for each scene change.

According to a third aspect of the present invention, a series of two-dimensionally displayed moving image data is based on data obtained by one-dimensionally sampling a moving position in one direction while moving the sampling position in the other direction. In the image display method for displaying a still image, the sampling position in the one direction is reset to a reference position for each scene change, and the sampling speed in the one direction is changed according to the length of the scene. The aspect ratio of the still image is changed according to the length of the scene.

According to a fourth aspect of the present invention, screen data is fetched for each scene change from a series of two-dimensionally displayed moving image data, and a still image is displayed at a corresponding time axis position.
An image display method in which a scene
If the change time is short, shift it by a certain amount in the vertical direction
In a superimposed manner .

According to a fifth aspect of the present invention, screen data is fetched for each scene change from a series of two-dimensionally displayed moving image data, and a still image having an aspect ratio corresponding to the length of the scene is provided at a corresponding time axis position. To display.

[0023]

According to the first aspect of the present invention, the sampling position in one direction is reset to the reference position every time a scene change occurs, so that the scene change point is always located at the boundary of the screen 6. When the length of the scene is a length constituting one screen, the scene is not displayed over two screens, and the length and the content of the scene can be easily grasped.

According to the second aspect of the present invention, the sampling position in one direction is reset to a position corresponding to the length of the scene every time a scene change occurs. For example, when the length of a scene is a length constituting one screen, the image is not displayed over two screens, and the shorter the length of the scene is, the more the center of the image is displayed. , The length and content of the scene can be easily grasped.

According to the third aspect of the present invention, the sampling position in one direction is reset to the reference position for each scene change, the sampling speed is changed according to the length of the scene, and the aspect ratio of the still image is changed. The ratio is changed according to the length of the scene, and the point of change of the scene is always located at the boundary of the screen 6. For example, when the length of the scene is a length that constitutes one screen, the two screens are changed. The image is not displayed straddling, and the entire image is compressed and displayed as the length of the scene is shorter, so that the length and content of the scene can be easily grasped.

According to the fourth aspect of the present invention, screen data is fetched for each scene change, and a still image is displayed at a corresponding time axis position .
If the scene change time is short, a fixed vertical interval
Is superimposed by shifting the Runode can readily grasp the length and content of the scene.

According to the fifth aspect of the present invention, the screen data is fetched for each scene change and displayed at a corresponding time axis position as a still image having an aspect ratio according to the length of the scene, and the length of the scene is short. As the whole image is compressed and displayed, the length and contents of the scene can be easily grasped.

[0028]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows an image display device for realizing the image display method of the present embodiment. In FIG. 1, portions corresponding to those in FIG. 16 are denoted by the same reference numerals, and detailed description thereof will be omitted.

In FIG. 1, reference numeral 17 denotes a scene change detecting device, to which a RC (Rewritable Consumer) time code tm output from the VTR 11 is supplied. The detecting device 17 detects a scene change based on the time code tm, and outputs the time code tm at the time of the scene change to the processor 1 via the system bus 13.
Send to 4.

FIG. 2 shows the operation of the detecting device 17 when detecting a scene change.

First, the current time parameter ct is
Initialization is performed with ct = 0 (step 40).

Next, after substituting the current time parameter ct for the old time parameter ot (step 4)
1), the RC time code tm is read to obtain the real time (recording time) rt (step 42), and the real time rt is substituted into the current time parameter ct (step 4).
3).

Next, it is determined whether or not ct-ot> LT (step 44). If ct-ot> LT is not satisfied, the process returns to step 41. On the other hand, when ct-ot> LT, it is determined that a scene change has been detected, and scene change detection processing, for example, after outputting a corresponding time code tm (step 45), returns to step 41, and returns to step 41.
The above-described detection operation is repeated.

Here, LT is set to a value sufficiently longer than the reading interval RTM of the RC time code tm and shorter than the minimum time MINRST for restarting recording. That is, RTM <LT <MINRST.

The example of FIG. 1 is configured as described above, and the rest is configured similarly to the example of FIG.

FIG. 3 shows the operation at the time of creating a video index in this example.

First, N, L, dN, dL are set (step 50). For example, N = 150, L = 50, dN =
3, dL = 1.

Next, the reading position parameter X of the slit data is cleared as X = 0 (step 5).
1).

Next, vertical slit data of X and width dL is read from the left end of the screen from the reduced screen data of a certain frame output from the reduced image data input unit 12 (step 52), and the read vertical slit data is video indexed. Is written to the storage device 15 so as to be the corresponding time axis position on the screen 6 (step 53).

Next, after waiting for the time of the dN frame (step 54), it is determined whether or not the processing is completed (step 5).
5). If it is determined that the operation is to be ended, the operation ends. If the end is not determined in step 55, it is determined from the detection output of the detection device 17 whether or not a scene change has occurred (step 5).
6).

When a scene change is detected, data of a scene change mark is written in the storage device 15 so as to indicate a corresponding time axis position on the screen 6 of the video index (step 57). After returning to clear the position parameter X by setting X = 0, d
From the reduced screen data after N frames, X,
The vertical slit data having the width dL is read and stored in the storage device 15.
(Steps 32 and 33).

On the other hand, when a scene change is not detected, the position parameter X is increased by dL as X = X + dL (step 58), and then the position parameter X becomes X <X
It is determined whether it is L (step 59).

When X <L and not at the right end of the screen,
Returning to step 52, the vertical slit data of X and width dL is read from the left end of the screen from the reduced screen data after dN frames and written in the storage device 15 (step 5).
3). On the other hand, if X <L is not at the right end of the screen, the flow returns to step 51 to clear the position parameter X by setting X = 0, and then, from the reduced screen data after dN frames, a vertical X and width dL from the left end of the screen. The slit data is read and written into the storage device 15 (steps 52 and 53).

In the image display method of the present embodiment, the position parameter X is cleared every time a scene change is detected by the detection device 17, and therefore, as shown in FIG. Section (reference position), and a video index screen 6 is displayed as shown in FIG. As described above, the change point of the scene is always located at the boundary of the screen 6, and for example, when the length of the scene is a length constituting one screen, the scene is not displayed over the two screens 6; There are effects such as easy understanding of length and contents.

Next, another embodiment of the present invention will be described with reference to the drawings. FIG. 5 shows an image display device for realizing the image display method of the present example. 5, parts corresponding to those in FIG. 4 are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the example shown in FIG. 5, the reduced image data input section 12 is provided with a reduced screen buffer 12B in addition to a reduction processing section 12A for forming reduced screen data. The buffer 12B has a capacity corresponding to the time required for the vertical slit 4 to move from the left end to the right end of the frame 2. The example of FIG. 5 is configured as described above, and the rest is configured similarly to the example of FIG.

FIG. 6 shows the operation at the time of creating a video index in this example.

First, N, L, dN, dL are set (step 60). For example, N = 150, L = 50, dN =
3, dL = 1.

Next, the time S until the next scene change is read (step 61), and it is determined whether or not S <N (step 62). If S <N, the position parameter X is set to X (LS) / 2N (step 6).
3) Go to step 65. On the other hand, if S <N is not satisfied, X = 0 and S = S−N (step 64), and the routine proceeds to step 65.

In step 65, the vertical slit data of X and width dL is read from the left end of the screen from the reduced screen data of a certain frame outputted from the reduced image data input section 12, and the read vertical slit data is read into the video index screen 6 The data is written into the storage device 15 so as to be the corresponding time axis position above (step 66).

Next, after waiting for the time of the dN frame (step 67), it is determined whether or not the processing is completed (step 6).
8). If it is determined that the operation is to be ended, the operation ends. If it is not determined in step 68 that the scene change has been completed, it is determined whether or not a scene change has occurred based on the detection output of the detection device 17 (step 6).
9).

If it is a scene change, the data of the scene change mark is written into the storage device 15 so as to indicate the corresponding time axis position on the screen 6 of the video index (step 70), and the process returns to step 61. After reading the time S until the next scene change, the process proceeds to step 62, and the same operation as described above is performed.

In step 69, if it is not a scene change, the position parameter X is increased by dL as X = X + dL (step 71).
It is determined whether or not <L (step 72).

When X <L and not at the right end of the screen,
Returning to step 65, the vertical slit data of X and width dL is read from the left end of the screen from the reduced screen data after dN frames and written in the storage device 15 (step 65,
66). On the other hand, when X <L and not at the right end of the screen,
Returning to step 62, the same operation as described above is performed.

In the image display method of this example, when the time S until the next scene change becomes N or more, X is set to 0 and the vertical slit 4 is reset to the left end of the frame 2, while the time S is set to N If shorter, X = L (NS) /
2N, the vertical slit 4 is reset from the center of the screen as the time S is shorter (shown in FIG. 7). for that reason,
When the scene is short, the image on the center side that easily reflects the contents is displayed as the video index screen 6 (shown in FIG. B), so that even if the scene is short, the contents can be easily confirmed. .

Further, since the changing point of the scene is always located at the boundary of the screen 6, even if the length of the scene is a length constituting one screen, for example, the scene is not displayed over two screens 6. The advantage is that the length and contents of the scene can be easily grasped.

Next, still another embodiment of the present invention will be described with reference to the drawings. An image display device for realizing the image display method of this example is also configured as shown in FIG. 5, but in this example, the storage capacity of the buffer 12B is
Only the longest scene time is needed.

FIG. 8 shows the operation at the time of creating a video index in this example.

First, N, L, dN, dL are set (step 60). For example, N = 150, L = 50, dN =
3, dL = 1.

Next, after the time S until the next scene change is read (step 81), P / S / (SDIV (2
N) +1) is substituted (step 82). Where DIV
Means integer division.

Next, after the position parameter X is cleared by setting X = 0 (step 83), the reduced image data input unit 1
From the reduced screen data of a certain frame output from 2, the vertical slit data of X, width dN × L / P is read from the left end of the screen (step 84), and the read vertical slit data is P / N times in the horizontal direction ( (Step 85), and write it to the storage device 15 so as to be the corresponding time axis position on the video index screen 6 (Step 86).

Next, after waiting for the time of the dN frame (step 87), it is determined whether or not the processing is completed (step 8).
8). If it is determined that the operation is to be ended, the operation ends. If it is not determined in step 88 that the scene change has been completed, it is determined whether or not a scene change has occurred based on the detection output of the detection device 17 (step 89).

If it is a scene change, the data of the scene change mark is written into the storage device 15 so as to indicate the corresponding time axis position on the screen 6 of the video index (step 90), and the process returns to step 81. After reading the time S until the next scene change, the process proceeds to step 82, and the same operation as described above is performed.

In step 89, if it is not a scene change, the position parameter X is increased by dN × L / P by setting X = X + dN × L / P (step 91), and then whether the position parameter X satisfies X <P It is determined whether or not it is (step 92).

If X <P and not at the end of the scene, the flow returns to step 84 to read vertical slit data of X and width dN × L / P from the left end of the screen from the reduced screen data after dN frames, The data is multiplied by P / N in the horizontal direction and written in the storage device 15 (steps 84 to 86). On the other hand, X <
If it is not at P but at the end of the scene, the process returns to step 83, sets X = 0, and performs the same operation as described above.

In the image display method of this example, X = 0 is set for each scene change, and the vertical slit 4
And the width (movement speed) of the vertical slit 4 is increased as the length S of the scene is shorter (FIG. 9).
A), on the contrary, the shorter the length of the scene, the more the storage device 15
The magnification of the vertical slit data written in the data is reduced. Therefore, since the entire screen of the video index screen 6 is displayed with a width corresponding to the length and the content of each scene, the length and the content of each scene can be easily confirmed.

As shown in FIG. 5, an image display device that implements the above-described method shown in FIGS. 6 and 8 is provided with a reduced screen buffer 12B. By detecting the scene change information and storing and using the scene change information in the storage unit, the reduced screen buffer 12B can be unnecessary.

Next, another embodiment of the present invention will be described with reference to the drawings. An image display device for realizing the image display method of this example is configured as shown in FIG.

FIG. 10 shows the operation at the time of creating a video index in this example.

First, the parameters of the time T (frame), the scene change time F, and the shift H are initialized to 0 (step 100).

Next, the data DS of the reduced screen is fetched from the reduced image data input unit 12, and this data DS is placed at the position on the time axis (L × T / N from the left) set on the screen by H ×
The data is written in the storage device 15 so as to be shifted vertically by P (step 101). Here, L is the width of the reduced screen, and N is the time (frame) occupied by L in the video index screen.

Next, after setting H = H + 1 (step 10
2), it is determined whether or not to end (step 103). If it is determined that the operation is to be ended, the operation ends. If the end is not determined in step 103, a frame change time is waited (step 104), and after T = T + 1 (step 105), it is determined whether or not a scene change is performed based on the detection output of the detection device 17 (step 105). Step 106).

If it is not a scene change, it is determined whether or not the time (TF) from the previous scene change to the present is an integral multiple of the time N occupied by the reduced screen (step 107). If not, the process returns to step 103. On the other hand, if it is an integer multiple, H = 0 is set (step 108), and the process returns to step 101 to perform the above-described operations such as taking in the data DS of the reduced screen.

If there is a scene change in step 106, the time T is substituted for the scene change time F (step 109), and the storage device 15 is instructed to indicate the corresponding time axis position on the video index screen 6. After writing the scene change mark data (step 11
0), returning to step 101 and performing the same operation as described above.

In the image display method of the present example, when there is a scene change and when no scene change occurs for a time longer than the time N occupied by the reduced screen, data DS of the reduced screen is fetched (shown in FIG. 11A). ), Is written at a position corresponding to the time axis on the index screen.
Further, if a scene change occurs in a time shorter than the time N occupied by the reduced screen from the time of the previous capture of the reduced screen, the reduced capture shifted at a fixed interval P upward or downward (down in the embodiment). Screen is written.
Therefore, the screen 6 of the video index is displayed as shown in FIG. 9C, and there is an effect that the length and contents of each scene can be easily confirmed. FIG. B shows that P = 0
Is shown.

Next, another embodiment of the present invention will be described with reference to the drawings. An image display device for realizing the image display method of this example is also configured as shown in FIG.

FIG. 12 shows the operation at the time of creating a video index in this example.

First, the time T (frame) and the scene change time F are initialized to 0 (step 100).

Next, data DS (T) of the reduced screen at time T is fetched from the reduced image data input unit 12, and the data DS (F) of the reduced screen fetched at time F is set on the time axis set on the index screen. Upper position (L x F /
N) is written by multiplying (TF) / N times in the horizontal direction (step 112). Here, L is the width of the reduced screen, and N is the time (frame) occupied by L in the video index screen.

Next, after setting F = T (step 11)
3), it is determined whether or not to end (step 114). If it is determined that the operation is to be ended, the operation ends. If it is not determined in step 114 that the scene change is to be completed, the process waits for a frame change time (step 115), sets T = T + 1 (step 116), and determines whether or not a scene change has occurred based on the detection output of the detection device 17 (step 116). Step 117).

If it is not a scene change, it is determined whether or not the time (TF) from the previous scene change to the present is twice the time N occupied by the reduced screen (step 118). If not, return to step 114.
On the other hand, if it is doubled, the process returns to step 112 to perform operations such as the above-described capture of the reduced screen data DS (T).

At step 117, if there is a scene change, the data of the scene change mark is written in the storage device 15 so as to indicate the corresponding time axis position on the video index screen 6 (step 119). Returning to 112, the same operation as described above is performed.

In the image display method of this example, when there is a scene change, reduced screen data DS (T) is fetched (shown in FIG. 13A), and the image is enlarged or reduced (aspect ratio is changed) according to the length of the scene. Change) and is written to the position corresponding to the time axis on the index screen. Therefore, the screen 6 of the video index is displayed as shown in FIG. 6B, and there is an effect that the length and contents of each scene can be easily confirmed.

Next, another embodiment of the present invention will be described with reference to the drawings. According to the image display method of the present example, the video index screen 6 as shown in FIG. 13B can be displayed. The image display device for realizing the image display method of the present example is generally configured as shown in FIG. 16, but is further provided with a storage unit for storing scene change information. The scene change information is stored in the storage unit and used.

FIG. 14 shows the operation at the time of creating a video index in this example.

First, the time R until the next scene change is read (step 121), and then R / (RDIV
(2N) +1) is substituted (step 122). Here, DIV means integer division. In this case, R
Is 2N or more, divide it into RDIV (2N) +1,
If it is 2N or less, it means that P = R. Here, L is the width of the reduced screen, and N is the time occupied by L on the index screen.

Next, the data DS of the reduced screen is fetched from the reduced image data input section 12, and this data DS is horizontally moved to the position on the time axis (L × T / N from the left) set on the video index screen. Write by P / N times (step 123). T is a frame number when a reduced screen is captured.

Next, after waiting for the time of the P frame (step 124), it is determined whether or not the processing is completed (step 12).
5). If it is determined that the operation is to be ended, the operation ends. If the end is not determined in step 125, it is determined whether or not it is a scene change (step 126).

If it is not a scene change, step 1
Returning to 23, operations such as taking in the data DS of the reduced screen are performed. On the other hand, if it is a scene change, data of a scene change mark is written in the storage device 15 so as to indicate the corresponding time axis position on the screen 6 of the video index (step 127), and the process returns to step 121. The same operation as described above is performed.

In the above embodiment, the VTR 11
Although it is determined whether or not a scene change has occurred based on the RC time code tm output from the controller, it is also possible to determine whether or not a scene change has occurred by detecting a correlation between images.

[0091]

According to the first aspect of the present invention, since the sampling position in one direction is reset to the reference position every scene change, for example, when the length of a scene is a length constituting one screen. Thus, the scene length and the contents can be easily grasped without being displayed over two screens.

According to the second aspect of the present invention, the sampling position in one direction is reset to a position corresponding to the length of a scene every time a scene change occurs. In such a case, the image is not displayed over two screens, and the shorter the length of the scene is, the more the center of the image is displayed. Therefore, the length and content of the scene can be easily grasped.

According to the third aspect of the present invention, the sampling position in one direction is reset to the reference position for each scene change, and the sampling speed is changed according to the length of the scene. The aspect ratio is changed according to the length of the scene. For example, when the length of the scene is a length constituting one screen, it is not displayed over two screens, and the length of the scene is short. As the whole image is compressed and displayed, the length and contents of the scene can be easily grasped.

[0094] According to the fourth aspect of the present invention, displays the still image in the time axis position corresponding been captured screen data for each scene change, yet more still image display duration
If the scene change time is short, set a certain vertical interval.
Are staggered superimposed Runode, the length and content of the scene can be easily grasped.

According to the fifth aspect of the present invention, screen data is fetched for each scene change and displayed at a corresponding time axis position as a still image having an aspect ratio according to the scene length. The shorter the image is, the more the entire image is compressed and displayed, so that the length and contents of the scene can be easily grasped.

[Brief description of the drawings]

FIG. 1 is a diagram showing a display device for realizing a method of the present invention.

FIG. 2 is a flowchart illustrating a scene change detection operation.

FIG. 3 is a flowchart showing an operation at the time of creating a video index.

FIG. 4 is a diagram showing a display example by the method of FIG. 3;

FIG. 5 is a diagram showing a display device for realizing the method of the present invention.

FIG. 6 is a flowchart showing an operation when creating a video index.

FIG. 7 is a diagram showing a display example according to the method of FIG. 6;

FIG. 8 is a flowchart showing an operation when creating a video index.

FIG. 9 is a diagram showing a display example according to the method of FIG. 8;

FIG. 10 is a flowchart showing an operation at the time of creating a video index.

FIG. 11 is a diagram showing a display example according to the method of FIG. 10;

FIG. 12 is a flowchart showing an operation at the time of creating a video index.

13 is a diagram showing a display example by the method of FIG.

FIG. 14 is a flowchart showing an operation at the time of creating a video index.

FIG. 15 is a diagram showing the concept of a video index.

FIG. 16 is a diagram showing a display device of a video index.

FIG. 17 is a flowchart showing an operation at the time of creating a video index.

FIG. 18 is a diagram illustrating an operation when creating a video index.

FIG. 19 is a diagram for explaining a problem of a conventional example.

[Explanation of symbols]

 Reference Signs List 1 video image group 2 frame 4 vertical slit 5 screen 11 VTR 12 reduced screen data input unit 12A reduction processing unit 12B reduced screen buffer 13 system bus 14 processor 15 index information storage device 16 index information output device 17 scene change detection device

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-334374 (JP, A) JP-A-5-183863 (JP, A) JP-A-2-260075 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) H04N 5/76-5/956

Claims (5)

(57) [Claims] 1. A still image constituted by a series of two-dimensionally displayed moving image data based on data obtained by one-dimensionally sampling a moving position in one direction while moving the sampling position in another direction. An image display method for displaying, wherein the sampling position in the one direction is reset to a reference position every scene change. 2. A still image constructed based on data obtained by one-dimensionally sampling a series of moving image data displayed two-dimensionally in one direction while moving each sampling position in one direction. An image display method for displaying, wherein the sampling position in the one direction is reset to a position corresponding to the length of a scene for each scene change. 3. A still image constituted by a series of two-dimensionally displayed moving image data based on data obtained by sampling one-dimensionally in another direction while moving each sampling position in one direction. In the image display method for displaying, the sampling position in the one direction is reset to a reference position for each scene change, and the sampling speed in the one direction is changed according to the length of a scene. An image display method, wherein the ratio is changed according to the length of the scene. 4. An image display method for capturing screen data for each scene change from a series of two-dimensionally displayed moving image data and displaying a still image at a corresponding time axis position.
And the scene change time is shorter than the still image display time
In this case , the image display method is characterized in that the image is superimposed and displayed at a certain interval in the vertical direction . 5. A method of capturing screen data for each scene change from a series of two-dimensionally displayed moving image data, and displaying the screen data at a corresponding time axis position as a still image having an aspect ratio according to the length of the scene. Image display method to be used.