JPH04191981A - Image processing device - Google Patents

Abstract

PURPOSE:To improve image expression capability by preparing reference color conversion data, and generating reference picture element data in which the optimum color image can be obtained when using the reference color conversion data at every display area. CONSTITUTION:The reference color conversion data (reference color map) of each picture element data to perform the mean (standard) color conversion processing of an image displayed on every window is stored in reference color map memory 12 (reference color conversion data storage means) in advance. Also, an image reproduction data storage part 14(14-1 to 14-4)(image data storage means) is provided in accordance with the windows W1-W4. Therefore, a color image with the maximum fidelity to an original image can be reproduced by synthesizing color conversion data with picture element data. Thereby, it is possible to improve the image expression capability of the image displayed on every display area on a display screen.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an image processing device, and particularly to an image processing device that divides a display screen of an image display device into a plurality of display areas (windows) and displays a different image in each display area. The present invention relates to an image processing device that processes image data during display.

[Prior Art] In conventional image processing devices of this kind, pixel data of an image to be displayed is converted into color data based on color conversion data, and the data is output and displayed on a CRT or the like. . When displaying different images in multiple windows, store the pixel data and color conversion data of the image to be displayed in each window, and set the color conversion data of the image in a given window in the conversion table. , input the pixel data of the image into the conversion table and convert it into color data. At this time, the pixel data of images in other windows are also
It is converted into color data using the same conversion table.

Alternatively, one default color conversion data may be stored in advance, and this default color conversion data may be set in a conversion table.
The pixel data of the image in each window is converted into color data in accordance with this default color conversion data.

[Problems to be Solved by the Invention] However, since the pixel data and color conversion data of the image of each window are used to optimally display the image of that window, the pixel data of a given window cannot be used to When the conversion data is converted into color data, there is a problem that the colors of the image become dirty.

Further, even when using default color conversion data, since this default color conversion data is not set corresponding to the image of each window, there is still a problem that the colors of the displayed image become dirty. Roughly speaking, the degree of color staining differs from window to window, so there is a risk that the user may mistakenly believe that the window is malfunctioning.

The present invention was made in view of these circumstances, and
It is an object of the present invention to provide an image processing device that improves image representation ability for images displayed in each display area of a display screen.

[Means for Solving the Problems] The image processing device of the present invention is provided corresponding to each display area generated by dividing a part or all of a display screen into one or more, and each display area is an image data storage means for storing pixel data and color conversion data of an image to be displayed in each display area, and a standard color conversion for performing standard color conversion processing of each pixel data of an image to be displayed in each display area. a standard color conversion data storage means in which data is stored in advance; a color conversion means in which color conversion data is set and converts pixel data into color data based on the set color conversion data; and a standard color conversion data storage means The present invention is characterized by comprising standard pixel data generation means for generating standard pixel data from which an image of a standard color is obtained after the conversion is completed in accordance with the standard color conversion data stored in the standard color conversion data.

[Operation] In the image processing device configured as described above, standard color conversion data is prepared, and standard pixel data that allows an optimal color image to be obtained when this standard color conversion data is used is generated for each display area. .

Therefore, by appropriately selecting and combining these data, it is possible to improve the image expression ability of images displayed in each display area of the display screen.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. 1st
The figure shows the configuration of an embodiment of an image processing apparatus according to the present invention. In the figure, the image processing apparatus according to the embodiment of the present invention includes an image data storage section 10, a standard color map memory 12, and an image reproduction data storage section 14 (14-1).
~14-4), a CPU 20, an operation section 22, and a conversion table 24. Image data storage section 10, standard color map memory 12, image reproduction data storage section 14
-1 to 14-4, CPU 20 and conversion table 24
are connected to each other via bus 18.

Image data of an image to be displayed in each display area (window) of the display screen of an image display device (not shown) is inputted to the image data storage unit 1o from the input terminal 1, and this image data is input to the image data storage unit 10. is temporarily stored. Part or all of the display screen of the display device is divided into one or more windows, and in this embodiment, as shown in FIG. 2, different images are displayed in four windows Wl to W4. shall be.

The image data input to the image data storage section 10 is
As shown in the figure, control data 30. color map 3
1 and a bitmap 32. The control data 30 is composed of various types of control information including identification data indicating in which window this image data is displayed. Further, color conversion data for converting each pixel data of an image to be displayed into color data is written in the color map 31. Furthermore, in the bitmap 32,
Each pixel data of the image to be displayed is written. Therefore, by combining the color conversion data and pixel data (converting the pixel data into color data in correspondence with the color conversion data), it is possible to reproduce a color image that is most faithful to the original image.

On the other hand, the standard color map memory 12 (standard color conversion data storage means) stores standard color conversion data ( A standard color map) is stored in advance.

In addition, the image reproduction data storage unit 14 (14-1 to 14-
40 image data storage means) are windows W1 to W4.
standard bitmap memories 15 (15-1 to 15-4), original bitmap memories 16 (16-1 to 16-4), and original color map memories 17 (17-1 to 17-4), respectively. 4
)have.

The original bitmap memory 16 is a memory that stores pixel data of an image (pixel data of the bitmap 32) to be displayed in the corresponding window. Further, the original color map memory 17 includes a memo and a standard bitmap memory 1 for storing color conversion data (color conversion data of the color map 31) extracted from the image data.
5 is a standard color map memory 12, an original bit map memory 16, and an original color map memory 17.
This memory stores standard pixel data created by the CPU 20 (standard pixel data generation means) from each data. This standard pixel data is stored in the conversion table 24 (
When a standard color map (color conversion data in the standard color map memory 12) is set in the color conversion means), the image displayed in the window is created so as to be most faithfully (standardly) expressed.

The CPU 20 extracts specific data from inputted image data, transfers it, and creates a standard bitmap.

The operation unit 22 is used to specify a window on the display screen and a color map.

The conversion table 24 is a table that converts pixel data of an image to be displayed into color data based on a set color map and outputs the color data.

The operation of the image processing apparatus having the above configuration will be explained with reference to the flowcharts of FIGS. 4 and 5. First, when image data of an image to be displayed in each window w1 to w4 is input to the input terminal 1, the CPU 20 converts the image data into a bitmap (original bitmap) 32, a color map (original color map)
31 and store them in the original bitmap memory 16 of the image reproduction data storage unit 14 of the corresponding window.
and are respectively written into the original color map memory 17 (step 40).

Next, standard pixel data is created from the original bitmap, original colormap, and standard colormap, and written into the standard bitmap memory 15 of the image reproduction data storage section 14 (step 41).

In this way, the various data related to the reproduction of images to be displayed in each of the windows W1 to W4 are stored in the image data storage units 14-1 to 14-4.

Furthermore, reproduced image data is created and outputted as follows from the data stored in the standard color map memory 12 and the image data storage sections 14-1 to 14-4. That is, by operating the operation unit 22, the position of the cursor on the screen can be changed to an arbitrary position. C.P.
U20 recognizes the window in which this cursor is located as the selected window (step 50) and determines the color conversion mode therein (steps 51.56).

The user can specify the color conversion mode of the window where the cursor is located by operating the operation unit 22.

The window where the cursor is located (e.g. window Wl)
) is specified as the optimum color mode (step 5
1), it is determined whether the optimum color is actually displayed in the window (step 52). When the optimal color is actually displayed, i.e. conversion table 2
4, the data of the original color map memory 17-1 (original color map) is set, and the pixel data of the original bitmap memory 16-1 (original pixel data) has been read out as the pixel data of window W1. Since the command has already been executed, no special processing will be executed thereafter.

On the other hand, when the optimal color is not displayed, first,
Unselected windows (in this case, window W
2. W3. The pixel data of W4) is the data of standard bitmap memories 16-2 to 16-4 (standard pixel data).
(step 53). Next, the original color map of the selected window w1 is set in the conversion table 24 (step 54), and furthermore, the pixel data of the window W1 is switched to the original pixel data (step 55).

In this way, the image in window W1 is displayed in the optimal color.

On the other hand, window W2. W3. The image of W4 is
Since the standard pixel data is color-converted in accordance with the original color map of the window w1, the images will not necessarily have the optimum colors, but they will all be displayed with the same colors.

On the other hand, when the selected window W1 is specified in the standard color mode (step 56), when the standard color is actually specified (step 57), that is, when the standard color map memory 12 is stored in the conversion table 24, When the data (standard color map) is set and the standard pixel data is read out as the pixel data of window W1, the command has already been executed, so no special processing is performed thereafter.

On the other hand, when the standard color is not actually displayed, the standard color map is set in the conversion table 24 (step 58), and the standard color map is set in the conversion table 24 (step 58), and the standard color map is set in the conversion table 24 (step 58). The pixel data of W3 and W4 are switched to each standard pixel data (step 59).

As a result, in this case, images in all windows will be displayed in the same color.

[Effects of the Invention] As described above, according to the image processing device of the present invention, standard color conversion data is prepared, and each standard pixel data that can obtain an optimal color image when using the standard color conversion data is Since the image is generated for each display area, it is possible to improve the image expression ability of the image displayed in each display area of the display screen.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of an image processing device according to the present invention, FIG. 2 is an explanatory diagram showing a state in which the display screen is divided into a plurality of windows, and FIG. 4 and 5 are explanatory diagrams showing the format of the image data of the displayed image, and FIGS. 4 and 5 show the processing contents of the image processing apparatus shown in FIG. 1, and FIG. 4 shows the contents of the image data writing routine. , and FIG. 5 are flowcharts showing the contents of the image data successive output routine. lO...Image data storage 8 units 12...Standard color map memo 18 14 (-14-1 to 14-4)...
Image reproduction data storage section, 15 (15-1 to 15-4)
...Standard bitmap memory, 16 (16-1~
16-4)...Original bitmap memo 1 person 1
7 (17-1 to 17-4)...Original color map memo j included 20...CPU, 22...Operation unit, 2
4...Conversion table.

Claims (1)

[Claims] Pixel data and colors of an image to be displayed in each display area are provided corresponding to each display area generated by dividing part or all of the display screen into one or more parts. an image data storage means in which conversion data is stored; and a standard color conversion unit in which standard color conversion data for performing standard color conversion processing of each pixel data of an image to be displayed in each of the display areas is stored in advance. data storage means; color conversion means for setting color conversion data and converting pixel data into color data based on the set color conversion data; and standard color conversion data stored in the standard color conversion data storage means. An image processing apparatus comprising: standard pixel data generating means for generating standard pixel data from which an image of standard colors is obtained when converted in accordance with the standard pixel data.