JP2678171B2 - Color palette editing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color palette editing device in an image display device for editing a palette of a color image represented by using a color palette (color look-up table).

[0002]

2. Description of the Related Art FIG. 6 is a diagram showing a structure of a conventional image display device which is a premise of the present invention. In the figure, 101 is an image data memory, 102 is a color palette, and 10 is a color palette.
3 is an editing device, 104 is a user interface, 10
Reference numeral 5 is a display control device, and 106 is a display device.

As shown in FIG. 7, a color palette 102 in the figure is a table for holding palette numbers 0 to 255 and corresponding R, G, and B luminance information, and is an image data memory 101. Stores, for example, an 8-bit palette number in association with the image data and the image data.

The image data read from the image data memory 101 is given a color in the color palette 102 based on the palette number attached to the image data,
The color image is displayed on the display device 106 via the display control device 105. The display device 106
To change or replace the color of the image displayed in,
The user uses the editing device 103 to execute R, G, and R of the color palette 102 through the user interface 104.
By operating the B brightness information or the like, the color of the image displayed on the display device 106 is changed or replaced.

For example, when the user changes the values of R, G, B of palette number 2 in the color palette 102 shown in FIG.
Of the images displayed in 6, the color of the image corresponding to palette number 2 is changed.

By the way, in the conventional editing apparatus as described above, for example, in order to reduce the types of colors used in the displayed image, the user selects a similar color from the used colors. However, when replacing them with one color, the user had to see them by his own eyes and manually select them. However, when trying to find a close color with the human eyes, there is a danger that even a close color may be overlooked due to the contrast with the surrounding colors. The task of searching was a very time-consuming and patient task.

Further, in the conventional editing apparatus, when performing work such as replacement or change, in order to know at which position in the image the specific color is used, the specific color is temporarily changed to a conspicuous color. However, it is necessary to perform complicated operations such as changing the operating conditions, which interrupts the operation flow and reduces work efficiency. Furthermore, in the case of replacing a plurality of colors among the colors displayed on the display device with another one, it is necessary to sequentially select and replace each palette data for many colors. It had to be repeated many times, and it was not easy to operate and inefficient.

[0008]

SUMMARY OF THE INVENTION The present invention has been made to solve the drawbacks of the above-mentioned conventional device, and it is possible to easily find a close color and a specific color from the displayed image. It is an object of the present invention to provide a color palette editing device for an image display device that can perform a plurality of colors collectively and that has good operability.

[0009]

FIG. 1 is a block diagram showing the principle of the present invention. The invention of claim 1 of the present invention relates to a color palette 1 storing color palette data, and an image display for displaying a color image on a display screen based on the color palette data stored in the color palette 1. As shown in FIG. 1, the color palette editing apparatus of the apparatus is provided with a neighboring color selecting means 3 for searching a neighboring color of the target color 2 selected by the user from the color palette 1 and creating a neighboring color list 5. ing.

By displaying the retrieved near color on the display screen, the user can easily grasp the near color. According to a second aspect of the present invention, as in the first aspect, as shown in FIG. 1, a threshold value setting means 4 for setting a threshold value is provided, and in the neighboring color selecting means 3, R of the target color 2 selected by the user, G, B values and R, G, of color palette data stored in color palette 1
The B-value distances are compared, and the difference is searched for color palette data within a threshold value.

According to a third aspect of the present invention, in addition to the first or second aspect of the present invention, as shown in FIG. 1, the target color 2 selected by the user and its neighboring colors are combined into another color. The color replacement means 6 for performing the replacement is provided. According to claim 4, the color palette storing the color palette data
In the color palette editing device of the image display device that displays a color image on the display screen based on the palette 1 and the color palette data stored in the color palette 1, as shown in FIG. The target color blinking means 7 for blinking the target color 2 on the display image is provided.

Then, by blinking the selected target color 2 on the display image, the use location of the target color 2 can be easily grasped. According to a fifth aspect of the present invention, in addition to the fourth aspect of the present invention, it is possible to clearly indicate the use position of the selected plurality of target colors 2 on the display image.

[0013]

When the user selects the target color 2 from the colors on the display image, the neighboring color selection means 3 colors the neighboring color of the target color 2 as a color
The palette 1 is searched, and the neighboring color list 5 is output. Since the neighboring colors in the neighboring color list 5 are displayed on the display device, the user can easily know the colors close to the target color 2.

When the user collectively replaces the target color 2 and the searched neighboring color with another color, the color replacement means 6 is used.
Replaces the color palette data of the target color 2 and the neighboring colors in the color palette 1 all at once with the color designated by the user. Therefore, the user can collectively replace the neighboring colors including the target color 2 without performing a complicated operation.

Further, when the user selects the target color 2,
The target color blinking means 7 displays the target color 2 on the display image.
Blink the used part of. by this,
The user can easily know where the target color 2 is used on the display image.

[0016]

FIG. 2 is a diagram showing an embodiment of the present invention. In FIG. 2, 11 is an editing device, 12 is color palette data, 13 is image data, 14 is a user interface, and 15 is a palette. Selecting means, 16 pixel display means, 17 neighboring color selecting means, 18 color replacing means, 19 storage unit, 19-1 target color storage unit, 19-2 neighboring color list storage unit, 19-3 The target color storage unit 20 is another conventional editing means.

In the figure, the editing device 11 corresponds to the editing device 103 shown in FIG. 6, and according to the operation of the user interface 14, the R, B, and G values of the color palette data 12 are displayed. change. The palette selection unit 15 is a unit that stores the selected color in the storage unit 19 when the user selects a color to be edited via the user interface 14, and the pixel display unit 16 displays the color on the display screen. The selected color is blink-displayed, the neighboring color selection means 17 is a means for selecting a color close to the selected color, and the color replacement means 18 is a means for replacing the selected color with another color.

The storage unit 19 is a means for storing the target color, the neighboring color list, and the target color, and the target color, the neighboring color list, and the target color are respectively the target color storage unit 19-1,
Neighborhood color list storage unit 19-2, target color storage unit 19
-3 is stored. Here, the target color is currently used on the display image, because the user changes or replaces it,
Alternatively, the color selected to obtain the near color, the near color list is a list of colors close to the color selected by the user, and the target color is the changed or replaced color.

FIG. 3 is a diagram showing an embodiment of the neighboring color selecting means 17 of FIG. 2, and 33 of FIG. 3 corresponds to the neighboring color selecting means 17 of FIG. In the figure, 31 is color palette data (12 in FIG. 2), 32 is a target color storage unit (see FIG. 2).
19-1), 33 is a neighborhood color selection unit, 33-1 is a threshold setting circuit, 33-2 is a threshold, 33-3 is a neighborhood color selection circuit, and 34 is a neighborhood color list storage unit (19-2 in FIG. 2). ).

The threshold value setting circuit 33-1 in the figure is a means for setting a threshold value 33-2 which defines the range of neighboring colors.
The user can arbitrarily set the threshold value 33-2 at the time of editing.

For example, by displaying neighboring colors on the display screen,
It is possible to set the threshold value by the user designating the range of neighboring colors on the display screen. The neighboring color selection circuit 33-2 compares the R, G, B values of the target color stored in the target color storage section 32 with all the R, G, B values of the color palette data 31, and When the distance is within the threshold value 33-2 set in the threshold value setting circuit 33-1, the color palette data 31 is stored in the neighboring color list storage unit 34 as a neighboring color.

FIG. 5 is a diagram showing an example of a display image on the display screen of the image display device according to the present invention. In the figure, 51 is a screen of a display device such as a CRT, 52 is a color palette display section displayed on the screen, 53 is a target color (color stored in 19-1 of FIG. 2) display section, and 54 is Target color (color stored in 19-3 of FIG. 2) display unit, 55 is a list of neighboring colors (color stored in 19-2 of FIG. 2) display unit, and 56 is an image displayed on the display screen. Is one example.

Next, a first embodiment of the present invention will be described with reference to FIGS. 2, 3 and 5. For the image 56 displayed on the display screen of FIG. 5, the user searches, for example, a color similar to the color of the right ear of the cat in the displayed image 56 from the colors used on the image. In some cases, the user uses a pointing device such as a mouse or touch panel to indicate the color of the cat's right ear.

The target color designated by the user is given to the palette selection means 15 via the user interface 14, stored in the target color storage section 19-1 of the storage section 19, and the target color on the display screen of FIG. It is displayed on the color display section 53.

The neighboring color selecting means 17 has the configuration shown in FIG. 3, and as described above, compares the colors stored in the target color storage section 19-1 with all the palette data, and determines the R, G, B Based on the difference in distance, palette data having a color close to the target color is selected from the color palette data 12 and stored in the neighboring color list storage unit 19-2 of the storage unit 19.

The colors stored in the near color list 19-2 are displayed on the near color display section 55 in FIG. In the image 56 of FIG. 5, for example, when the color of the left ear of the cat and the color of the nose of the cat are close to the color of the right ear of the cat, the neighboring color list display unit 5
In 5, the color of the left ear of the cat and the color of the cat's nose are displayed.

When the user wants to change these neighboring colors to one color, he or she uses a pointing device to indicate the color to be changed. The color designated by the user is given to the palette selection means 15 via the user interface 14, stored in the target color storage unit 19-3 of the storage unit 19, and the target color display unit 54 on the display screen of FIG. Is displayed in.

In the example of FIG. 5, for example, when the user collectively changes the colors of the right ear, the left ear and the nose of the cat to the target colors, the user interface 14 gives the instruction to the editing device 11. .

In response to this instruction, the color replacing means 18 of the editing device 11 causes the target color stored in the target color storage section 19-1 of the storage section 19 and the neighboring color stored in the neighboring color list 19-2. The color palette data 12 of is changed all at once to the target color. Since the color palette data 12 of the target color and the neighboring color is changed, the target color and the neighboring color in the image are collectively changed to the target color. In the example of FIG. 5, the colors of the cat's right and left ears and the cat's nose are collectively changed to the target color.

When the user wants to know the portion where the same color is used in the displayed image, he or she uses the pointing device to instruct the color to be selected, and the instruction is given by the editing device 11. Give to. In response to the instruction, the pixel display means 16 of the editing device 11 replaces the R, G, B values of the selection target color of the color palette data 12 with other values at a constant cycle, and changes the selection target color on the display screen. Blink.

As the target color to be blinked, only one color is blinked as described above, and a neighboring color of the color to be blinked is selected in advance and stored in the neighboring color list storage unit 19-1 of the storage unit 19. , It is also possible to blink all the neighboring colors stored in the neighboring color list.

FIG. 4 is a diagram showing a second embodiment of the present invention, which illustrates a second embodiment of the neighboring color selecting means of the present invention. In the figure, 43 corresponds to the neighboring color selecting means 17 of FIG. In the figure, 41 is a color
Palette data (12 in FIG. 2), 42 is a target color storage unit (19-1 in FIG. 2), 43 is a near color selecting means, 43-1
Is a threshold value setting circuit, 43-2 is a threshold value, 43-3 is a near color selection circuit, 44 is a near color list storage unit (19-2 in FIG. 2).
It is.

The threshold value setting circuit 43-1 in the figure is means for setting a threshold value 43-2 for defining the range of neighboring colors.
The threshold value 43-2 can be arbitrarily set by the user as in the case of FIG. The neighboring color selection circuit 43-3 compares the R, G, B values of the target color stored in the target color storage section 42 with all the R, G, B values of the color palette data 41, and When the distance is within the threshold 43-2 set in the threshold setting circuit 43-1, the color palette data 41 is set as the neighboring color, and the neighboring color list storage unit 44 is used.
To memorize.

In this embodiment, the target color storage section 42 is configured to store a plurality of target colors, and the user can select a plurality of target colors using the pointing device described above. it can. In this embodiment, when selecting a neighboring color, when the user selects a plurality of colors as described above, the neighboring color selecting unit 43 causes the plurality of colors 42-1 to 42-stored in the target color storage unit 42. As described above, for n, the neighboring color is obtained, and the neighboring color corresponding to each color is stored in the neighboring color list storage unit 44.

When the user collectively performs color replacement for these neighboring colors, as described above, when the target color is selected and the editing device 11 of FIG. 2 is instructed, the color replacement of FIG. 2 is performed. The circuit 18 replaces all of the above neighboring colors with the target color. Also, if you want to replace multiple colors on the image with other colors at once, or if you want to blink multiple colors at the same time, select multiple colors using a pointing device as described above. The target color storage unit 41 of FIG. 4 can be stored and a plurality of colors can be collectively replaced or blinked by the color replacement unit 18 or the pixel display unit 16 of FIG.

Further, the target color storage unit 19- of FIG.
It is also possible to replace a plurality of colors with a plurality of different colors at the same time by configuring 3 to store a plurality of colors.

[0037]

As is apparent from the above description,
In the present invention, the means for selecting the neighboring color, the means for collectively replacing the colors, and the means for blinking the selected color on the display screen are provided. It is easy to know whether it is being used in a position, and those colors can be replaced with other colors all at once. Its operability is better than that of a color palette editing device in a conventional image display device. Can be significantly improved.

[Brief description of the drawings]

FIG. 1 is a principle block diagram of the present invention.

FIG. 2 is a diagram showing a first embodiment of the present invention.

FIG. 3 is a diagram showing a configuration of a near color selection unit in the first embodiment.

FIG. 4 is a diagram showing a second embodiment of the present invention.

FIG. 5 is a diagram showing an example of a display image according to the present invention.

FIG. 6 is a diagram showing a configuration of a conventional image display device which is a premise of the present invention.

FIG. 7 is a diagram showing the contents of a color palette.

[Explanation of symbols]

 1,102 Color palette 11,103 Editing device 12,31,41 Color palette data 14,104 User interface 15 Palette selection means 16 Pixel display means 3,17,33,43 Neighborhood color selection means 6,18 colors Replacement unit 19 Storage unit 19-1, 32, 42 Target color storage unit 19-2, 34, 44 Neighbor color list storage unit 19-3 Target color storage unit

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Takahiro Kii 1015 Kamiodanaka, Nakahara-ku, Kawasaki-shi, Kanagawa Fujitsu Limited

Claims (5)

(57) [Claims] 1. A color palette (1) storing color palette data and a color palette stored in the color palette (1).
In the color palette editing device of the image display device that displays a color image on the display screen based on the data, the color near the target color (2) selected by the user is displayed.
A color palette editing device comprising a neighborhood color selection means (3) for searching a palette (1) and creating a neighborhood color list (5), and displaying the retrieved neighborhood colors on a display screen. 2. A threshold setting means (4) for setting a threshold, R, G, B values of a target color (2) selected by a user and color palette data stored in the color palette (1). Means for comparing color R, G, and B values of each other and searching for color palette data in which the difference is within a threshold value
The color palette editing apparatus according to claim 1, further comprising (3). 3. A color replacement means for collectively replacing a target color (2) selected by a user and its neighboring colors with another color.
(6) is provided, Claim 1 or Claim 2 characterized by the above-mentioned.
The described color palette editing device. 4. A color palette (1) storing color palette data, and a color palette stored in the color palette (1).
In the color palette editing device of the image display device for displaying a color image on the display screen based on the data, the target color blinking means (7) for blinking the target color (2) selected by the user is provided, A color palette editing device characterized in that the selected part of the target color (2) can be clearly used on the display image. 5. The color palette editing device according to claim 4, wherein the use locations of the selected target colors (2) on the display image can be clearly indicated.