JPS63237177A - Color selecting device - Google Patents

Abstract

PURPOSE:To realize the color display of a hierarchical state with the use of the color array of a limited number by enlarging or reducing the width of the stage change of chrominance information in a color array display. CONSTITUTION:A color display area 13 is formed on the screen of a display. A color selection palette 7, color shift buttons 8a, 8b, color stage change buttons 9a, 9b, a cursor 11, and a stop button QUIT are displayed on a display frame 16 respectively. The width of the stage change of the color information is enlarged or reduced by using the stage change buttons 9a, 9b. While the stage change of the chrominance information is made fine gradually in then color array of the prescribed number, a desired one color is selected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a color selection device, and is particularly suitable for use in a color palette display device for selecting colors in a color graphic display.

[Summary of the invention]

By displaying color information that changes step by step using a predetermined number of color arrays and expanding or reducing the width of the step changes, it is possible to display hierarchical colors with a limited number of display arrays, thereby making it possible to display color information that changes in steps from a large number of packages. This is a color selection device that makes it easy and quick to compare and select a desired color.

[Conventional technology]

A color palette display device is known in which a color display area is provided on the display surface of a color graph ink display device, and a plurality of colors for color selection are displayed therein (for example, Japanese Patent Laid-Open No. 57-4092, Japanese Patent Laid-Open No. (See Publication No. 57-182788).

[Problem that the invention seeks to solve]

The number of color palettes on the display screen is limited to, for example, 10, so when displaying, for example, 4096 hues as color information, color selection is generally done by shifting the displayed colors by scrolling. .

K However, if there are a large number of colors to select, it takes time to scroll. Furthermore, since the colors displayed on the approximately 10 palettes are similar colors with almost no difference in hue, it is difficult to compare and select colors.

In view of this problem, it is an object of the present invention to make it possible to easily and quickly compare and select a large number of colors using a limited number of color arrays.

[Means for solving problems]

The color selection device of the present invention includes a display device that displays stepwise changing color information as a predetermined number of color arrays (color palette) on a display surface.

The step change width of the above color information is set by step change buttons 9a and 9b.
A changing means is provided for enlarging and reducing the size of the image using .

In the predetermined number of color arrays, a desired color is selected by gradually reducing the step change range of color information.

[Effect]

Hierarchical display is performed using a limited number of arrays, ranging from a color array display in which the range of step change in color information is relatively large to a color array display in which step change is small. Since the step change width changes progressively, colors that change over a wide range from colors with relatively large color information differences to colors with very small color information differences can be displayed in a short time, making it easier to compare and select colors. Efficiency is improved and selection accuracy is increased.

〔Example〕

FIG. 1 shows a configuration diagram of a display area of a color selection device showing an embodiment of the present invention, and FIG. 2 shows a block diagram of a color information processing circuit. As shown in FIG. 2, the color information output from the image memory 2 is supplied to the display 1 via the Lascue transformer 3, and is displayed in color on the display surface. The central processing unit 4 controls the color information stored in the image memory 2, and each color information is displayed in a step change layer of hue, brightness, or saturation based on the memory output. A color is selected on the west side using an input unit 6 having a keyboard structure connected via an interface 5 and a cursor on the display screen.

When a color selection mode is designated by a key operation on the input unit 6, a color display area 13 is formed on the screen of the display l. The color display area 13 is formed on the display surface of the display 1 as shown in FIG. That is, when the color selection mode is designated, the color display area 13 divided by the display frame 16
is formed on the display screen, and within the display frame 16 are a color selection palette 7, color movement buttons 8a and 8b, and a color step change button 9a.
'b9b, cursor 11, and cancel button QUIT are displayed.

The color selection palette 7 is composed of 11 color boxes 12, and each color box 12 is assigned one of the color palettes.

In this embodiment, the HLS system (hue, brightness, saturation) is used as the color information displayed on the color selection palette 7, and the hue (
The case of selecting Hue) will be explained. Note that when one of the HL S is selected, for example, hue is selected, the remaining brightness and saturation do not change.6 The area corresponding to the color selection palette 7 in the image memory 2 contains color information with a constant hue interval. The color information is read out during the color selection mode and displayed in each color box 12 of the color selection palette 7 in order of hue. Figure 1 shows each color box 12.
The hue numbers of the color information displayed in are indicated by h1 to hll, and these color information are displayed at equal intervals with a hue difference Δh.

Therefore, if the hue number of each color information is expressed using the center color, h s = h b + 2Δh h, :h, +Δhh h, = h, −Δh h4”ha 2Δh.

When selecting color information displayed on the color selection palette 7, the cursor 11 is moved to point to the color box 12 in which the desired color is displayed.

If the color information you want to select is not displayed on the color selection palette 7, use the cursor 11 to press the color movement button 8a or 8b.
The displayed color is moved (scrolled) by instructing , and the color information to be selected is called up on the color selection palette 7.

When selecting an intermediate color from the color information displayed at intervals of hue difference Δh on the color selection palette 7, press the color step change button 9b.
instruct. Then, the stepwise change in the displayed color information is reduced each time an instruction is given, and an intermediate color is displayed on the palette 7. Furthermore, by instructing the step change button 9a, the hue interval Δh can be doubled each time the step change button 9a is instructed.

FIGS. 3 and 4 show how color movement is actually performed. In this case, seven color boxes 123 to 12
The color selection palette 7 is made up of g.

As shown in FIG. 3 (A), the downward color movement button 8b
When indicated with the cursor 11, the display window composed of the color box 12 moves downward, and the center color displayed in the center color box 12d is displayed at the top, as shown in CB) of the same figure. color box 1
Move to 2a.

At the same time, the colors , h, , h, move upward, respectively, and h
o becomes the center color. Also, three new colors are created based on ho, and the remaining color box 1 at the bottom is created in order of hue.
Displayed in 2e to 12g.

As shown in FIG. 4(A), the upward color movement button 8a
When you specify with the cursor 11, as shown in Fig. 4 [B],
The colors , h4, h, , h, are shifted downward in order, and three new colors are displayed in the upper color boxes 12a to 12c.

When such color movement is performed by scrolling, the hue number changes cyclically from θ to 3600, so the color can be moved in a direction closer to the hue number desired to be recalled. In addition,
In the case of brightness or saturation, movement is performed within a predetermined range (for example, number o-1oo).

FIG. 5 shows a flowchart when moving display colors. When the upward color movement button 8a is specified in step SL, the process proceeds to step St, and the color h6 displayed in the top color box 12a before the color movement button 8a is specified is the color of the center color box 12d. (Figure 4B).

Then, in step S, another color box 12a
~12cS12e Calculate the hue hi to be displayed in ~12g, that is, h6~h4, h, ~h0.

This calculation is performed by adding or subtracting the hue difference Δh to the center color h3. If the calculated hue hi exceeds the maximum value hmax, bit-hmax is set in step S4. Each hue information thus obtained is rewritten and displayed in the corresponding memory area of the color selection palette 7 in step S. The processing procedure when the downward color movement button 8b is designated is also similar.

6 and 7 show how the hue difference is reduced or enlarged.

As shown in FIG. 6A, when the color step change button 9b indicated by a triangle with a small slope is pointed with the cursor 11, the interval between hues displayed on the color selection palette 7 is reduced from Δh to Δh/2. be done.

Therefore, as shown in CB in FIG.
b and 12f, and an intermediate color is displayed in each of the adjacent color boxes 12a, 12C, and 12112g. gp, color box 12a~
12g display color scale, ±n-Δh/2 (n=o, 1.
2 ・------), and the hue interval becomes finer. If you repeat this operation further, the hue interval will become Δh/4, Δh/
8・---・−・

As shown in FIG. 7A, when the color step change button 9a indicated by a triangle with a large slope is pointed with the cursor 11, the hue interval Δh is doubled, and the center color h3
The hue changes sharply around
---------------> is displayed in each color box 12a to 12g. By repeating this, the display hue interval will further increase by 4Δh, 8Δh−・−・−・・−・−
It is enlarged as...

Figure 8 shows the hue difference Δh of each color displayed on the color selection palette 7.
It shows a flowchart when changing.

Button 9 to enlarge the color step change in step S.
When a is instructed, step S! If no instruction is given, proceed to step s3. In step SO,
The hue difference 2·Δh, which is twice the previous hue difference, is selected as the hue difference Δh of each color to be newly displayed, and in step S4, the maximum value of the hue difference Δhmax and the hue difference Δh are compared, and these smaller values are compared. Let this be the newly selected hue difference Δh,
The upper limit of Δh is set to Δhmax.

Based on the value of the hue difference Δh obtained in this way, the hue hi=h, +iΔh (i=Q, 1.2, . . .
・) Calculate and step S! SS, the maximum value hm of each hue
a x and the minimum value hmin are set, and the display of the color selection palette 7 is changed in step S1.

In step S3, if the button 9b for reducing the color step change is designated, the process proceeds to step S9, where the hue difference Δh/2 is half of the hue difference Δh used up until then.
is selected as the new hue difference. The newly selected hue difference Δh is the minimum value Δh of the hue difference in step SIO.
min, and a lower limit is set to a preset minimum hue difference value Δhmin.

Once the hue difference Δh of each color to be newly displayed is determined, steps Ss, Sb, St, and Ss are executed, and a new color is displayed on the color selection palette 7 by calculations similar to those described above.

As mentioned above, the color display device of this embodiment uses a limited number of color palette display areas to hierarchically change from displaying coarse color information differences to displaying fine color information differences. , it becomes possible to compare and select a large number of colors easily and quickly.

That is, first, the user instructs the color movement buttons 8a and 8b to select a hue close to the desired color. Next, if you instruct the color step change button 9b, the color box 12d in the center of the palette 7 will be displayed.
A display in which the hue difference between adjacent color boxes is gradually reduced can be obtained sequentially for each instruction without changing the color of the box.

Therefore, a large number of colors can be displayed one after another on the screen, ranging from colors whose hues are somewhat distant to colors whose hues are very close to the color in the central color box, and these colors can be displayed one after another on the screen, with the central color being the standard. A desired color can be quickly selected by comparing it with a large number of colors. To change the hue of the reference color in the center of the palette while selecting a color, press the color move button 8 again.
All you have to do is scroll the display by instructing a and 8b. At this time, if it is necessary to make the hue change wide, the step change button 9a is instructed to enlarge the change width, so that the hue change during scrolling becomes wide.

〔Effect of the invention〕

As described above, the present invention makes it possible to expand or reduce the width of the step change in color information in color array display, so it is possible to display hierarchical colors using a limited number of color arrays, which allows a very wide range of colors to be displayed. A desired color can be quickly and easily found among a large number of colors. Therefore, the work efficiency and selection accuracy of color comparison and selection are improved.

[Brief explanation of drawings]

Fig. 1 is a line diagram showing an example of a display screen displayed by a color selection device showing an embodiment of the present invention, Fig. 2 is a block diagram of a color information processing circuit, and Fig. 3 shows how colors are displayed on a color palette. Figure 4 is a line diagram showing how colors are moved down the color palette, Figure 5 is a flowchart showing the color scrolling process, Figure 6 is a color A line diagram showing the display change when the step change width of the array is reduced. Fig. 7 is a line diagram showing the display change when the step change width of the color is enlarged. Fig. 8 is a process when changing the step change width. It is a flowchart. In addition, in the symbols used in the drawings, 7-・・−−−−−・−・−・−Color i1 selection palette 8a
, 8b --- One color movement button 9a, 9b ---
−・Color step change button 11・−・−−−1−・−・・
・-Cursor 12-----1...--It is a color box.

Claims (1)

[Scope of Claims] A display device that displays color information that changes stepwise as a predetermined number of color arrays on a display screen; A change width changing means that expands or reduces the width of the step change of the color information; and a selection means for selecting one color from the predetermined number of color arrays.