JPH0435162A - Partial moving device for still picture - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to a still image partial moving device, and in particular, a still image partial moving device suitable for use when providing effects to still image programs broadcast in art museums, libraries, museums, etc., such as high-definition still image programs. Regarding.

[Conventional technology]

In still image programs broadcast on television etc., for example, when changing the display image from one image to another,
In some cases, the entire image is moved in a certain direction so that it disappears from the screen, and in its place, a new image or a plain background image is displayed from another direction. Such processing is called scroll processing. Conventionally, there are two types of devices that perform such scrolling processing on still image data: analog type devices and digital type devices. An analog type scrolling device performs arithmetic processing on image data electronically using an analog video editing machine and performs scrolling processing. Further, a digital scrolling device performs a scrolling process by recording still image data in a frame memory and reading out the image data by sequentially shifting the reading start address of the frame memory. 2. Description of the Related Art In video programs broadcast on television or the like, there are cases where a part of the image is moved to another area. Such processing is called partial movement processing (slide processing). A DVE (digital video effector) device is a device that performs such partial movement processing on a moving image. For DVE equipment, analog input video
Internally, the image is converted into a digital image, a partial movement operation is performed on this digital image, and the image resulting from the calculation is converted back into an analog signal and subjected to partial movement processing.

Problems to be Solved by the Invention) However, with the conventional scrolling devices, both analog and digital devices are capable of moving the entire image on the display screen, but it is possible to move the image partially. There was a problem in that it was not possible to move the still image program, and there were restrictions on the effects that could be applied to the still image program. Further, since the conventional partial moving device is used for moving images, there are problems in that the image quality is not very good when viewed as a still image, and it is expensive. The present invention has been made in order to solve the above-mentioned conventional problems, and provides a still image partial moving device that can partially move a still image on a screen and obtain a new production effect. The task is to do so. [Means for Solving the Problems] The present invention provides an apparatus for partially moving an area in which the image data is displayed on the screen of a display means when displaying one still image data on the screen of the display means. A non-display memory for storing still image data to be displayed in advance and a partial area of the non-display memory are specified, and the still image data stored in the area is read. a display memory for storing the read still image data and displaying the stored image data on the screen of the display means; and a display memory for storing the read still image data on a screen of the display means; The above problem is solved by including means for specifying and storing the read image data in the display memory and for changing the specified area. [Function] In the present invention, there is provided a still image partial moving device,
Still image data to be displayed is stored in a non-display memory in advance, a partial area of the non-display memory is specified, a still image take stored in the area is read out, and the read still image data is read out. , a partial area in the display memory is specified and stored, and the specified area is changed to display the image data stored in the display memory on the image of the display means. Therefore, it is possible to partially change the area on the screen in which the image data is displayed. For example, if you set the partial area specified in the non-display memory as a fixed area and change the partial area specified in the display memory, the partial image on the display screen will be displayed on the display screen. You can get a moving effect.

【Example】

Embodiments of the present invention will be described in detail below with reference to the drawings. First, a first example will be described. The first embodiment is a high-definition still image/partial image movement system configured as shown in FIG. 1 for partially moving an area for displaying still image data on the screen of a display device 18. As shown in FIG. 1, this high-definition still image/partial movement system mainly includes an image input device 10, an image storage/transfer device 12, a command input device 14, and a partial movement device z.
16 and a display device 18 are provided. The image input device 10 is a device for inputting image data (2048 horizontal x 2048 vertical pixel data for each color of red (R), green (G), and blue (B)) used in the partial movement process. be. The image storage/transfer device 12 is used to temporarily store the input image data used in the partial movement process and transfer it to the non-display memory 20 in the partial movement device 16. Note that the image storage/transfer device 12 may be one that can store still image data and R, G, and B color images in the form of 8 bits each. The command input device 14 inputs the name of the image data used for the partial movement process, the final step K for the partial movement process, and an area (referred to as a window area in the embodiment) for reading still image data in the non-display memory 20. Upper left coordinates (oleft
, otop) and the lower right coordinates (oright, odo
wn)), and the area to be written to the display memory 26 in the process start step and end step,
That is, the area at step 0 (upper left coordinates (sleft,
5top)), and the area at the step (
This is for inputting a command for the upper left coordinate (represented by left, 5top). The partial moving device 16 includes a non-display memory 2 for storing the transferred image data in advance before moving processing.
0, the window area command input from the command input device 14, and the display memory 26 at step 0 (processing start step) and step K (final step).
Each step n
(0≦n≦K) partial display area (upper left coordinates (n
eft, ntop) and the lower right coordinate (nright,
a transfer coordinate calculation unit 22 for calculating the still image data (represented by A display memory 26 is provided to temporarily store the information in order to display it on the display device 18. It should be noted that the non-display memory 2o may contain, for example, information such as that shown in FIG.
A) Each color image data of R, G, and B as shown in
048x,! A device that can store data with 2048 pixels can be used. Further, the display memory 26 may be one capable of storing R, G, and B color image data in a pixel count of 1280 pixels horizontally and 1024 pixels vertically, as shown in FIG. 3(B), for example. The display device 18 is for displaying still image data once stored in the display memory 26 on a screen. The operation of the first embodiment will be explained below. In the high-definition still image/partial movement system according to the first embodiment, the process of partially moving the display area of a still image is performed by process preparation and process execution. In preparation for processing, the still image data (R, G, B vertical 204
8×horizontal 2048) is input using the image input device 1'0, and then the input image is stored in the image storage/transfer device 12. As described above, processing preparation is completed. When executing the process, the partial movement process is mainly performed according to the flowchart shown in FIG. That is, the operator inputs predetermined commands and data necessary for the partial movement process from the command input device 14. These predetermined commands and data include the image name (A) of the still image data used in the partial movement process, the final step K of the partial movement, and the area (window area) where the still image data is to be read from the non-display memory 20. Upper left coordinates (olefet, oto
p) and the lower right coordinates (oright, odown, )
, the upper left coordinates at the start and end of the movement of the partial display area of the display memory 26, that is, the coordinates at step 0 where the process starts (sleft, 5tole), the coordinates at the final step where the movement process ends ( left, eto
p) etc. Next, the image storage/transfer device 12 reads the image base (A) to be used from the command input device 14 and enters the image name (A).
The still image data A is transferred to the non-display memory 20 at high speed. Next, the transfer coordinate calculation unit 22 uses the command input device 14.
In the final step I for partial movement, the upper left coordinates of the window area of the hidden memory 20 (oleft,
otop) and the lower right coordinate (oright-odown
), the upper left coordinates of each movement start and end area of the display memory 26 (coordinates at step 0 (sleft, 5t
Ol)) and the coordinates at the step (eleft,
etop)) (Step 1). Next, the transfer coordinate calculation unit 22 -masu, processing step n
(Step 2). Based on the final step K that has been read, the partial display area (in which the still image data is to be written in the nth (0≧n≧■) step) is initialized (step 2).
Upper left coordinate (nleft, ntop), lower right coordinate <n
right, ndown )) (Step 3
). In this case, the upper left coordinates (nlef
t,ntop) ,,lower right coordinate<nright, n
dovn ) is calculated using the following equations (1) to (4). n1eft −(elft −5left )
xn /K +5left...(1) ntop= (etop -5top) Xn
/ to +5tOt1-(2)nriql+t =n
left -1-oright-01sft ・
(3)ndown=ntop+odovn-ot
op +・+ (4) This (1) to (4)
Based on the coordinates calculated using the formula, one still image data read from the window area of the non-display memory 20 can be written into the partial display area at each step n of the display memory 26. Next, after the calculation of each coordinate of the partial display area from equations (1) to (tl) is completed in the n-th step, the transfer coordinate calculation unit 22 calculates that the upper left coordinates of the non-display memory 20 are (Oleft, otop ), and the lower right coordinate is (oriq
The still image data in the window area of ``ht, addown'' is displayed according to the calculated coordinates, with the upper left coordinates of the display memory 26 being (nleft, ntop) and the lower right coordinates being (nleft, ntop).
An instruction to transfer to the partial display area of rl(li)t,ndown) is sent to the high-speed transfer unit 24 (step 4). Next, as shown in FIG.
The still image data of 0 is transferred to the display memory 26 (step 5). Next, the number of steps n is incremented by 1 (nn+1)
(Step 6). When the value of step n is the final step ■ (or below (n≦K), the processes from step 3 to step 6 are repeated (step 7).On the other hand, when step n becomes larger than K (
If n>Ig), this procedure ends. Partial movement processing is performed through the above procedure. That is, in the first embodiment, in each step n, the area (window area) from which still image data is read from the non-display memory 20 is fixed, and the still image data in the window area is read out from the partial display area of the display memory 26. are transferred and written one after another for each step. Therefore, each partial display area on the screen of the display device 18 from the start of movement to the end of movement (upper left coordinate in step n)
The still image data will be displayed while overwriting the still image data in the areas (nleft, ntop). Therefore, for example, as shown in FIG. 3(B), the display device 1
It is possible to perform processing such that some still images move from the lower left to the upper right on the 8 screen. In the first embodiment, since the still image data in the window area WE is overwritten in the display memory 26 at each step, after the still image f moves, the left side and lower side of the still image It is possible to create a performance that leaves a trail. For example, as shown in FIG. 3, if each pixel in the display memory 26 is filled with blue data in advance and the background of the still image data in the window area to be read out is set to red, then A still image (the elephant partially moves and a red trajectory is displayed after the movement. Also, a production process is performed to move the image in the window area so as to leave a movement trajectory in the display memory. In this case, static image data to be moved to the same window area as in FIG. 3 is stored in the non-display memory 20 in advance, for example, as shown in FIG. 4(A). At the same time, a background image R is also written in advance in an area with the same number of pixels as the display memory 26. When performing partial movement processing on a still image, in each n step, first the blue image data is is transferred to the display memory 26 as a background, and then a still image f in the window area is transferred to the display memory 26.In each step n, a background image (in order to write an image for movement after writing the elephant) is transferred to the display memory 26. , it is possible to partially move a still image without displaying the locus of one still image. Next, a second embodiment will be described. This second embodiment is based on the display memory 26 used in the first embodiment. This is a still image partial movement system that moves a partial movement area in which still image data is written, and also moves a reading area (window area) of the non-display memory 20.The overall configuration of this system is as follows. The system shown in FIG. 1 is the same as the first embodiment, but the configuration of the command input device 14A and the transfer coordinate calculation unit 22A is different from that of the first embodiment in order to move the window area. In addition to the commands and data input in the first embodiment, the input device 14A inputs the upper left coordinates (coordinates at step 0 (SO
II3ft, 5otop) and the coordinates at step I (eoleft, eotop)) are input. Furthermore, the transfer coordinate calculation unit 22A calculates the upper left coordinate (nolefL notop ) and lower right coordinate (nor
igt+t, nowdown). Note that the other configurations are the same as the system of the first embodiment, so the explanation thereof will be omitted. In the still image partial movement system according to the second embodiment,
The still image display area is partially moved using substantially the same procedure as in the first embodiment. That is, in preparation for processing, image data is input in the same manner as in the first embodiment. Further, when executing the process, the partial movement process is mainly performed according to the procedure of the flowchart shown in FIG. The steps in this flowchart are almost the same as in the first embodiment, but
There are the following differences: In step 11, in addition to inputting the same commands and data as in step 1, the coordinates of the window area at the processing start step 0 (soleft, 5otop) - the upper left coordinates (eolefLeotop) at the final step () are input. In step 13, the transfer coordinate calculation unit 22A calculates the coordinates of the partial display area in the nth step, as well as the window area (upper left coordinates (nolef)) to be read out in the nth step.
t, notop), lower right coordinate (norght,
) is calculated using the following equations (5) to (8). noleft-(eoleft-soleft) xn
/ to 15 oleft...(5) notop = (eotop -5otop) x
n/to +5otop...(6) noriqh, t =noleft+oriqht-o
lef −(7)nodosvn=notop
+odown -otop - (8) At the n-th step, the calculation power of equations (5) to (8) and equations (1) to (4) above (after completion, the transfer coordinate calculation unit 22A , the window area (upper left coordinates (noleft, not
op ), lower right coordinate (noright, nodown
) A command is sent to the high-speed transfer unit 24 to transfer the still image data of ) to the partial display area in the n and y blocks (step 14). The subsequent steps 15 to 17 are the same as steps 5 to 7 of the first embodiment. According to the above procedure, in the system of this second embodiment, in each n step ~), the partial display area is calculated using equations (1) to (4), and the partial display area is obtained using equations (5) to (8). After determining the window area, the partial display area of the display memory 26 is moved, and the window area of the non-display memory 20 is moved. That is, in this system, before performing the partial movement process, for example, as shown in FIG.
Image data used for partial movement is written in advance in the area 23). At the same time, for example, blue background image data is written in advance in the area from the upper left coordinates (708, 1024) to the lower right coordinates (2047, 2047). When performing partial movement processing, in each step n, the background image data is first written into the display memory 26, and then the partial image within the window area is written into the display memory 26. By repeating this at each step n, an effect process can be performed in which the partial image viewed in the window area is displayed while moving on the blue background. That is, an effect can be obtained in which the image in the non-display memory 20 is viewed through a window, other parts are masked, and the image that is visible when the window is moved is displayed. Further, as an application example of the second embodiment, when moving the window area and the partial display area at the same time, the background image is not read and the still image data is sequentially transferred to the display memory 26 at each step n to display the displayed image. It is possible to perform effects such as wiping. That is, the still image data stored in the area from (708, 1024) to (2043, 2043) of the non-display memory 20 as shown in FIG. 7(A) is transferred as shown in FIG. 7(B). By sequentially transferring and writing the images to the display memory 26 from the top to the bottom at predetermined intervals, it is possible to perform a wipe effect in which the display images appear in order from the top. Note that in the first embodiment, (1) to (
4) In-window image data is written in the partial display area determined by the calculation formula in equation (5) to (8) in each step n in the second embodiment.
) is used for writing and reading. Therefore, the partial display area can be moved by computation of a relatively simple linear equation. However, the determination of the partial display area or window area performed when implementing the present invention is not limited to the first or second embodiment, and can be determined in various ways depending on the desired performance conditions. For example, if another arithmetic expression is used to determine the window area or partial display area, specific coordinate group data such as a circle or rectangle is given in advance instead of the arithmetic expression, and the window area is adjusted according to this coordinate group data. , it is possible to move any of the partial display areas. Furthermore, in the first and second embodiments, high-definition still image data was exemplified as data to be handled, but the data that can be used in the present invention is not limited to this type of data, and any type of still image data can be used. The present invention can also be employed when moving data. Effect of the Invention 1 As explained above, according to the present invention, a still image can be displayed by moving a partial display area of the display screen. Therefore, by devising the areas on the screen where parts of the screen are moved, it is possible to achieve the excellent effect of being able to create a variety of new presentation effects that were previously unobtainable.

[Brief explanation of drawings]

FIG. 1 is a block diagram showing a still image/partial movement system according to a first embodiment of the present invention, and FIG. 2 is a flowchart showing a partial movement processing procedure for explaining the operation of the first embodiment. 3 is a plan view showing an example of the relationship between the transfer areas between the non-display memory and the display memory, FIG. 4 is a plan view showing an example of the relationship between other transfer areas, and FIG. , a flowchart without showing the partial movement processing procedure for explaining the operation of the second embodiment of the present invention, FIG.
FIG. 7 is a plan view showing an example of the relationship between the transfer areas of the non-display memory and the display memory, and FIG. 7 is a plan view showing an example of the relationship between the transfer areas of the pond. 4.14A... Command input device, 6... Partial movement device, 8... Display device, O... Memory for non-display, 2.22A... Transfer coordinate calculation unit, 4... High speed Transfer unit, 6...Display memory.

Claims (1)

[Claims] (1) A device for partially moving an area for displaying the image data on the screen when displaying still image data on the screen of a display means, the device for moving the still image data to be displayed in advance. a non-display memory for storing; a means for specifying a partial area of the non-display memory and reading still image data stored in the area; and a means for reading still image data stored in the area; a display memory for storing data and displaying the stored still image data on a screen of a display means; and a display memory for specifying a partial area in the display memory to display the read still image data. A still image partial moving device, comprising: means for storing the specified area in the display memory and changing the specified area.