JPS63239560A - Image processor - Google Patents

Abstract

PURPOSE:To easily set and displays a desired color in a look-up table by extracting color components from an image area of the color to be displayed by an image processor for displaying and editing and converting them into R, G, and B values corresponding to the form of the look-up table. CONSTITUTION:A 1st image storage part 1 which stores a image to be referred to, a color component extraction part 5, and a color component conversion part 9 which converts color components suitably to the look-up table 7 are provided. Then, a picture which contains the color to be displayed is stored in the 1st storage part 1 and when the area of the color is specified by a 1st area specification part 4, a color close to the color is settable in the look-up table 7 without inputting R, G, and B values directly and displayed no a 2nd image display part 10. Consequently, the desired color is easily set in the table 7 without grasping the correspondence between the color and the respective R, G, and B values indicating the color, and displayed on a display part 10.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an image processing device capable of displaying and editing images.

2. Description of the Related Art A conventional image processing apparatus capable of displaying and editing images using a lookup table has a configuration as shown in the block diagram of FIG. 2, for example. In FIG. 2, 21 is an image storage unit that stores data, and 22 is a lookup table that associates image data in the image storage unit 21 with colors. 2
Reference numeral 3 denotes an image display section for displaying image data obtained from the image storage section 21 and the lookup table 22, and reference numeral 24 denotes an area specifying section for specifying an arbitrary area of the image data in the image storage section 21. Further, the structure of the Lutsuqua Tsubu table 22 is as shown in FIG. 3, for example. In FIG. 3, 25 is the number of the Lutsuqua Tsubu table. Also, 26, 27, and 28 are R%G%B items, respectively.
These (describe the strength of red, green, and blue, respectively.Second
In the image data in the image storage unit 21 shown in the figure, a lookup table number is written for each pixel. In the image processing device having the configuration shown in FIG. 2, when displaying a certain color in the target area, the red intensity corresponding to the lookup table number assigned to the pixel in the area in the image storage unit 21 is displayed. This is done by directly setting the R value, which is the intensity of green, the G value, which is the intensity of green, and the B value, which is the intensity of blue, in accordance with the color that you want to display.

Problems to be Solved by the Invention However, with the above configuration, it is difficult to grasp the correspondence between a color and the R, G, and B values that represent that color, so it is difficult to look up the desired color. The problem was that it was difficult to set up on a table and required skill to display any color.

In view of this point, the present invention has been developed, even if a color and R representing that color are
.

Means for Solving the Problems The present invention provides a first image storage unit, the first image storage unit,
a color component extraction unit that extracts color components of a target area; a second image storage unit; and a lookup table that associates colors with image data stored in the second image storage unit;
The image processing apparatus further includes a color component converting section that converts the color components extracted by the color component extracting section and sets a color obtained in a lookup table.

According to the above-described configuration, the present invention specifies an image area of a color to be displayed in the image data stored in the first image storage unit, extracts a color component in the area using the color component extraction unit, and calculates its value. The color component conversion unit converts the values into R, G, and B values according to the format of the lookup table, and sets them in the lookup table. Through the above processing, it is possible to easily set the desired color in the lookup table by simply specifying the region of the desired color to be displayed in the image data stored in the first image storage section.

Embodiment FIG. 1 is a block diagram showing the configuration of an image processing apparatus in an embodiment of the present invention. In FIG. 1, 1 is a first image storage section that stores reference image data, 2 is a first image display section that displays image data stored in the first image storage section 1, and 3 is a first image storage section. 1 is an image input section for inputting image data; 4 is a first area specifying section for specifying an arbitrary area of image data in the first image storage section 1; and 5 is a first area specifying section designated by the first area specifying section. A color component extraction unit extracts the color components of the image data in the image storage unit 1, a second image storage unit 6 stores image data for the purpose of adding arbitrary colors by the operator, and a second image storage unit 7. A lookup table 8 that associates image data in the storage unit 6 with colors specifies an arbitrary area of the image data in the second image storage unit 6, and converts the image data, that is, the lookup table number, into the color component conversion unit. 9 is a color component conversion unit that converts the color components extracted by the color component extraction unit 5 into color components according to the format of the lookup table 7 and sets them in the lookup table 7; Reference numeral 10 denotes a second image display unit that displays image data in the second image storage unit 6 and images obtained from the lookup table 7.

The operation of the image processing apparatus of this embodiment configured as described above will be described below.

Now, in the first image storage unit 1, each pixel of image data is represented by 8 bits each of R, G, and B, and the R, G, and B items of the lookup table 7 have a size of 4 bits each. shall be. In addition, as a process in the color component conversion unit, we consider a process of converting the color component extracted by the color component extraction unit 5 into a color close to that color according to the format of the lookup table. It is assumed that processing is performed to output only the upper 4 bits of 8-bit data.

The operator refers to the second image display section 10 and selects the second image storage section 6 to be displayed with a certain color using the second area specifying section 8.
The area of image data in the image data area is specified, and the lookup table number 90' is output to the color component conversion section 7. An image containing the desired color is input from the image input section 3 and stored in the first image storage section 1. The stored image data is displayed on the first image display section 2, and the operator refers to it and specifies an area of the desired color using the first area specifying section 4. The color component of each pixel in the area specified by the first area specifying section 4, that is, R,
The G and B values are extracted by the color component extraction section 5. In the color component conversion unit 9, the extracted RlG and B values are averaged for each R, G, and B in order to absorb slight variations in color within the area, and the R, G, and B values in the lookup table 7 are averaged. In order to conform to the format, the upper four bits of the R, G, and B values are set as the R, G, and B values of the look r-tube table number 'n°, respectively.

As described above, according to this embodiment, the first image storage section 1 stores images to be referred to, and the color component extraction section 5 extracts color components.
By providing a color component converter 9 that converts color components to match the lookup table 7, when an image containing a desired color to be displayed is stored in the first image memory gl and a region of that color is specified, , set a color close to that color in the lookup table without directly inputting the R, G, B values,
It can be displayed on the second image display section 10.

In this example, R, G, and B are used as color components, but the color components Y,
1. Q and the CI adopted by the International Commission on Illumination in 1931.
Color components x, y, z, etc. in the E1931 color system may be used.

As described in detail, according to the present invention, even if you do not know the correspondence between a color and the R, G, and B values that represent that color, you can easily find the desired color using a lookup table. It can be set and displayed, and its practical effects are great.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an image processing device according to an embodiment of the present invention, and FIG. 2 is a block diagram of an image processing device that can display and edit images using a conventional lookup table.
FIG. 3 is an explanatory diagram of an example of the structure of a lookup table. 1... First image storage section, 2... First image display section, 3
... image input section, 4... first area specification section, 5...
Color component extraction section, 6... Second image storage section, 7... Lookup table, 8... Second area specification section, 9...
Color component conversion section, 10... second both image display section. Name of agent: Patent attorney Toshio Nakao and one other person Figure 1

Claims (1)

[Claims] a first image storage unit that stores image data; a color component extraction unit that extracts color components of a target area in the first image storage unit; a second image storage unit that stores image data; a lookup table that associates colors with the image data stored in the image storage unit; a color component conversion unit that converts the color components extracted by the color component extraction unit and sets a color obtained in the lookup table; An image processing device comprising: an image display unit that displays image data in the second image storage unit and an image obtained from the lookup table.