JPH03110683A - Display and storage device for moving picture data - Google Patents

Abstract

PURPOSE:To reduce necessary capacity and to improve display speed of the moving picture data by comparing the respective picture element data of picture data for plural frames, calculating the minimum and maximum X and Y coordinates of the various picture data and displaying the differential picture data surrounded by these coordinates. CONSTITUTION:A first storage device 4 temporarily stores the plural frames of the input picture data and an extracting device 5 compares the respective picture element data of the picture data for the plural frames. Out of the X and Y coordinates of the various picture element data, the minimum X coordinates, the minimum Y coordinate, the maximum X coordinate and the maximum Y coordinate are calculated. A rectangular area part surrounded by four points such as (minimum X coordinate, minimum Y coordinate), (mini mum X coordinate, maximum Y coordinate), (maximum X coordinate, miximum Y coordinate) and (maximum X coordinate, minimum Y coordinate) is taken out as the differential picture data, stored in a second storage device 6 and displayed by a display device 3. Thus, when moving pictures are stored, the necessary capacity can be reduced and the speed can be improved for displaying the moving picture.

Description

[Detailed Description of the Invention] Industrial Application Field of the Invention The present invention ζ1 Related to a moving image data display/storage device Conventional technology FIG. 2 is a block diagram of a conventional moving image data display/storage device. 1 is a device for inputting image data; 2 is a device for storing image data; and 3 is a device for displaying image data. In the conventional device configured as described above,
The storage device 2 receives and stores a plurality of image data that changes over time from the input device 1. Thereafter, the image data is sequentially read out from the storage device 2 and displayed on the display device 3, thereby displaying a moving image. The problem to be solved by the conventional technology is that all of the image data is displayed and stored, which requires a large amount of storage capacity and slows down the screen display speed.The present invention displays and stores all of the image data. It is an object of the present invention to provide a display/storage device for moving image data that can be stored in a large capacity and quickly displayed on a screen. A first storage device that temporarily stores a plurality of frames, and compares each pixel data of the image data of the plurality of frames, and determines a minimum X coordinate and a minimum Y coordinate among the X coordinates and Y coordinates of different pixel data. , maximum X coordinate
From each of the two frames of image data, calculate the maximum Y coordinate (minimum X coordinate, minimum Y coordinate), (minimum XF
I! , Kaede Maximum Y coordinate), (Maximum X coordinate, Maximum Y coordinate), (Maximum X coordinate Minimum Y coordinate) An extraction device that extracts a rectangular area portion surrounded by four points, and the extracted image data and a second storage device that stores the four coordinates;
A display/storage device for moving image data comprising a display device for displaying the stored image data; and a display device for displaying the stored image data; Multiple frames of image data are temporarily stored, and an extraction device compares each pixel data of the multiple frames of image data to determine the smallest X coordinate, smallest Y locus, and largest among the X coordinates and Y coordinates of different pixel data. Find the X coordinate and the maximum Y coordinate, and from each of the plurality of frames of image data stored in the first storage device (minimum X coordinate, minimum Y coordinate), (
Minimum X coordinate, Maximum Y coordinate), (Maximum X coordinate,
(Maximum Y coordinate), (Maximum X ring, Minimum Y coordinate) 4
A rectangular area surrounded by points is extracted as differential image data. A second storage device stores the extracted differential image data and the four coordinates, and a display device displays the stored differential image data, thereby creating a moving image. Embodiment FIG. 1 is a block diagram of a moving image data display/storage device according to an embodiment of the present invention. 3 is a diagram showing the process of processing image data input to the moving image data display/storage device shown in FIG. Do this.

FIG. 3(a) shows input image data lO at time t, and FIG. 3(b) shows input image data 11 at time t+1.
The input device 1 takes in the input image data 10.11 shown in FIGS. 3(a) and 3(b) and stores it in the first storage device 4.
Then, the extraction device 5 compares each pixel data of the image data 1O111, and among the X-locus ring and Y coordinate of different pixel data, the smallest X-coordinate, the smallest Y-coordinate, and the largest X-locus ring.
Even if the maximum Y coordinate is calculated, even if the input image data 10.11 in Figure 3 (C) is compared, the shaded area in Figure 3 (C) is different pixel data, and the minimum X coordinate is xl,
Assuming that the maximum X coordinate is X2, the minimum Y coordinate is yl, and the maximum Y coordinate is y2, the extraction device 5 is (xl, y+),
A difference image from time t+i to time t is obtained by extracting a rectangular area portion 12 surrounded by four points (xl, 1 year old), (x2.3”) + (Xfi, yl) from the image data 10 at time t. The data 13 is stored in the second storage device 6.
Also, the rectangular area portion 12 surrounded by the four points is set at time t+1.
The data extracted from the image data 11 is stored in the second storage device 6 as differential image data 14 from time t to time t+1.
Further, the coordinates of the four points are also stored in the second storage device 6.
At the time when the image data 10 at time t is displayed on the display device 3, the coordinates of the four points obtained when comparing time t and time 1+1 and the difference image data 14 from time t to time t+1 are stored in a second memory. By replacing the differential image data 13 taken out from the device 6 at time t with the differential image data 13 from time t to time t+1, the image data 11 at time t+1 can be displayed on the display device 3.
The difference image data 14 obtained by the above processing is transferred to time t.
By replacing the image data 13 with the difference image data 13 from +1 to time t, the image data at time t cannot be displayed. Needless to say, it has the following effects - Advantages of the Invention As is clear from the above explanation, according to the moving image data display/storage device of the present invention, the first storage device captures input image data from the input device. A plurality of frames of input image data are temporarily stored, and an extraction device compares each pixel data of the image data of the plurality of frames, and extracts the smallest X-coordinate and the smallest Y among the X coordinates and Y coordinates of different pixel data.
Coordinates Maximum X coordinate Maximum Y coordinate is determined from each of the plurality of frames of image data stored in the first storage device (minimum X coordinate, minimum Y coordinate), (minimum X coordinate, maximum Y coordinate) ), (maximum X coordinate, maximum Y coordinate)
, (maximum X coordinate, minimum Y coordinate) is extracted as differential image data, a second storage device stores the extracted differential image data and the four coordinates, and a display device stores the extracted differential image data and the four coordinates. By displaying differential image data, the capacity required to store moving images can be reduced and the speed at which moving images can be displayed can be increased.

[Brief explanation of drawings]

FIG. 1 is a block diagram of a moving image data display/storage device in an embodiment of the present invention. FIG. 2 is a block diagram of a conventional moving image data display/storage device. FIG. 3 is a block diagram of a moving image data display/storage device. This is a diagram showing the processing process in the device.Input device 2.Storage device 3.Display device 4.First storage device 5.Extraction device 6.
Second storage device [10... Input image data at time t 11
. . . Input image data at time t+1 12 . . . Rectangular area 13.14 . . . Difference image data.

Claims (1)

[Claims] an input device that inputs image data; a first storage device that temporarily stores a plurality of frames of the input image data; and a first storage device that temporarily stores a plurality of frames of the input image data; The smallest X among the Y coordinates
coordinate, minimum Y coordinate, maximum X coordinate, and maximum Y coordinate, and from each of the two frames of image data (minimum
rectangle surrounded by four points: (maximum X coordinate, minimum Y coordinate), (minimum X coordinate, maximum Y coordinate), (maximum X coordinate, maximum Y coordinate), (maximum X coordinate, minimum Y coordinate) A display/storage device for moving image data, comprising an extraction device for extracting a region portion, a second storage device for storing the extracted image data and the four coordinates, and a display device for displaying the stored image data.