JP2003304409A - Device for determining color component range - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for determining the color component range in which the color component range can be determined by single temporary reading without requiring the knowledge of a color system. <P>SOLUTION: The device for determining the color component range comprises an image reading means 1, a color image storing means 2, a color image display means 3, a means 5 for replacing the color of pixel of a color image composed of a specified set color component range by a specified color, a means 6 for displaying a processed image, i.e., the replaced image, a color deletion specifying means 7 for specifying the position of pixel of any one of the color image or the processed image, a means 4 for setting a specified color component range from the colors of acquired pixels, and a color component range storing means 9 wherein the color component range setting means 4 resets a color component range every time when it is specified by the color deletion specifying means 7, the color replacing means 5 replaces the color of pixels in a reset color component range, and the processed image displaying means 6 updates and displays the color replaced image. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color component range determining apparatus for determining a color component range in a color dropout process for dropping an arbitrary color from a color image.

[0002]

2. Description of the Related Art Conventionally, there is a scanner having a color dropout function capable of dropping an arbitrary color, and the color component range (dropout color component range) to be dropped for the scanner by a personal computer. There is a color component range determination device that specifies the reading conditions of and specifies the reading start. In this case, on the PC,
A program for the operator to read conditions such as the color component range and a command to start reading is running. When a dropout color component range is specified by a personal computer for a scanner with a color dropout function that can drop arbitrary colors, HSV (hue, saturation, lightness) is generally caused because of color misregistration and color unevenness. Specify the range of color system elements such as) as the range of color components.

[0003]

However, the above-mentioned conventional color component range determination device requires knowledge about the color system, and the color component range is repeatedly specified and reread until the desired image is obtained. It had a problem that it had to do.

In this color component range determination device, it is required that the color component range can be determined by one tentative reading without knowledge of the color system.

In order to satisfy this requirement, the present invention aims to provide a color component range determining apparatus capable of determining the color component range by one tentative reading without knowledge of the color system. And

[0006]

In order to solve the above-mentioned problems, a color component range determining device of the present invention is an image reading device for reading a color image from a document and a color image for storing the color image read by the image reading device. The storage device, the color image display device for displaying the read color image, the color replacement means for replacing the color of the pixel of the color image composed of the set predetermined color component range with the predetermined color, and the replaced image. A processed image display device for displaying a certain processed image, a color deletion designating section for designating the position of a pixel of an image of a stored color image or a processed image, and a color image at the location designated by the color deletion designating section. A color component range setting unit that acquires a color of a pixel and sets a predetermined color component range from the acquired pixel color, and a color component range that stores the color component range set by the color component range setting unit The color component range setting means resets the color component range each time it is designated by the color deletion designating unit, and the color replacement means replaces the colors of the pixels in the reset color component range, and performs processing. The image display device has a configuration for updating and displaying an image in which colors have been replaced.

As a result, it is possible to obtain a color component range determining device which can determine the color component range by one temporary reading without knowledge of the color system.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A color component range determination device according to claim 1 of the present invention comprises an image reading device for reading a color image from a document, and a color image storage device for storing the color image read by the image reading device. A color image display device for displaying the read color image, a color replacing means for replacing a color of a pixel of the color image constituted by a set predetermined color component range with a predetermined color, and a processed image which is the replaced image A processed image display device, a color deletion designating section for designating the position of the pixel of the stored color image or the processed image, and the color of the pixel of the color image at the location designated by the color deletion designating section. And a color component range storage device for storing the color component range set by the color component range setting means. The color component range setting means resets the color component range each time it is designated by the color deletion designating section, the color replacement means replaces the color of the pixel of the reset color component range, and the processed image display device sets the color. The replaced image is updated and displayed.

With this configuration, the color of the pixel of the color image at the position designated by the color deletion designating unit is acquired, a predetermined color component range is set from the color of the acquired pixel, and the color deletion designating unit specifies the color component range. Since the color component range is reset every time, there is an effect that an appropriate color component range can be easily obtained while confirming the color replacement result by one temporary reading.

The color component range determination device according to claim 2 is
The color component range determination device according to claim 1, further comprising a color addition designation unit that designates a position of a pixel of an image of either a color image or a processed image, and the color component range setting unit includes a color addition designation unit. Every time the position is specified, the color of the pixel of the color image at the specified position is acquired, the color component range excluding the acquired color is reset, and the color replacement means replaces the pixel of the reset color component range. However, the processed image display device updates and displays the image in which the color is replaced.

With this configuration, the color of the pixel of the color image at the specified position is acquired every time the position is specified by the color addition specifying unit, and the color component range excluding the acquired color is reset. Therefore, it is possible to easily obtain an appropriate color component range while confirming the color replacement result with one temporary reading.

FIG. 1 shows an embodiment of the present invention.
~ It demonstrates using FIG.

(Embodiment 1) FIG. 1 is a block diagram showing a color component range determining apparatus according to Embodiment 1 of the present invention.

In FIG. 1, 1 is an image reading means for generating a color image, 2 is a color image storage means for storing the generated color image, and 3 is a color image display means for displaying the color image generated by the image reading means 1. Reference numeral 4 is a color component range setting means for setting a color component range, and 5 is a predetermined color of the pixel of the color image which is composed of the color component range set by the color component range setting means 4 and is stored in the color image storage means 2. The color replacement means for performing the processing of replacing the color with the color replacement means 6, the processed image display means 6 for displaying the image subjected to the replacement processing by the color replacement means 5, the color deletion designating means 7 and the color image display means 3 for displaying 8 A color addition range designation unit for designating the position of a pixel of the image displayed on the processed image or the processed image display unit 6, and a color component range storage unit 9 for storing the color component range.

FIG. 2 is a hardware configuration diagram showing a case where the color component range setting means 4 and the color replacing means 5 of FIG. 1 are realized by a CPU.

In FIG. 2, 20 is a CPU (central processing unit), and 21 is a scanner as an image reading device. In addition to outputting a color image, the scanner 21 replaces the color of the pixel formed by the color component range with the specified color in the same manner as the color replacement means 5 when the color component range is specified. It can also be output. Reference numeral 22 denotes a memory as the color image storage means 2 and the color component range storage means 9, and the memory 22 has a color image memory 22a as the color image storage means 2 and a color component range memory 22b as the color component range storage means 9. Have. A display 23 includes a color image display area 24 as the color image display means 3, a processed image display area 25 as the processed image display means 6, a temporary reading button 26 for an operator to instruct the scanner to perform temporary reading, and an operation. A reading button 27 for a person to instruct the scanner to read, a pointer 28 for pressing the buttons 26, 27 to indicate the position of the pixel of the image, and the pointer 28
A minus designation button 29 for changing to the mode used as the color deletion designation means 7 and a plus designation button 30 for changing the pointer 28 to the mode used as the color addition designation means 8 are displayed. Reference numeral 31 is a mouse for moving a pointer on the display.

FIG. 3 is a flow chart showing the operation of the color component range determining device of FIGS. 1 and 2, showing the case of determining the color component range to be dropped out.

In FIG. 3, when the operator first presses the temporary reading button (S1), the CPU 20 (color component range setting means 4) clears the color component range (S2), and the scanner 21.
The (image reading means 1) is instructed to read the document (S
3) Receive a color image (S4), store it in the color image memory 22a (S5), display it in the color image display area 24 (S6), and set a predetermined color component range (color component range after the second time). The color of the pixel of the color image formed by the above is replaced with the designated color (S7), and the color-replaced image is displayed in the processed image display area 25 (S8). At first, the color component range is cleared, so the color is not replaced. Next, the operator presses the minus designation button 29 (S
9) Move the pointer 28 to the minus designation mode (color deletion mode), move the pointer 28 onto the color image or the processed image, and designate the pixel to be replaced with the designated color (S).
10) Do. Then, since the minus designation mode is set (S11), the CPU 20 sets the color component range from the color of the pixel of the color image at the designated position (S1).
2). A procedure for setting the color component range from the color of the designated pixel will be described with reference to FIG.

FIG. 4 is a flowchart showing the procedure for setting the dropout color component range from the designated color, and shows the operation of the color component range setting means 4. The color system here is HSV (hue, saturation, lightness, 0 ° ≦ H <360 °,
0 ≦ S ≦ 100, 0 ≦ V ≦ 100) is used. The color system of HSV is represented by a cylinder, the hue of H corresponds to the angle of the circle, the saturation of S corresponds to the position of the radius of the circle, and the lightness of V corresponds to the position of the height of the cylinder. Since the hue of H corresponds to the angle of the circle, for example, when red is to be replaced, 0 is sandwiched between 0 and 300 ≦ H ≦ 60. Further, when 60 ≦ H ≦ 300 is set, the colors other than red are replaced. The color component range to be set is hs ≦ H ≦ he, s
s ≦ S ≦ se, vs ≦ V ≦ ve, and H of the specified color
Let SV components be h, s, and v.

In FIG. 4, first, it is judged whether or not the first designation or the first color component range or the color component range is not set yet (S101). If the first designation,
The start value and the end value of the color component range are set to the values of the first designated color (S102). If it is not the first designation, the process proceeds to step S103. In step S103, the range of the H component is additionally set. The additional setting of the H component range will be described with reference to FIG.

FIG. 5 is a flow chart showing the procedure for additional setting of the H component range.

In FIG. 5, the start value hs and the end value he of the already set H component range are compared to determine whether the H component range is 0 or not (S).
201). If 0 is not sandwiched, step S20
Go to 2. It is determined whether or not the H component h of the designated color is smaller than the start value hs of the H component range (S202). If it is smaller, h is not within the H component range, so the H component range must be changed. It is determined whether the change amount of the start value hs or the end value he of the H component range is smaller (S203). If the change of the start value hs is smaller, h is set as the start value hs. Yes (S204). In addition, if the change amount of the end value he is smaller, h
Is set as the end value he (S205). The H component h of the color designated by the determination in step S202 is the start value h of the H component range.
If it is larger than s, it is judged whether or not the designated h is larger than the end value he of the H component range (S206). If it is larger, h does not fall within the H component range, so the H component range must be changed. It is determined whether the change amount of the start value hs or the end value he of the H component range is smaller (S207). If the change of the start value hs is smaller, h is set as the start value hs. Yes (S208). In addition, if the change amount of the end value he is smaller, h
Is set as the end value he (S209). The H component h of the color designated by the determination in step S206 is the end value h of the H component range.
If it is determined that it is smaller than e, the H component h of the designated color is already in the H component range, so the H component range does not have to be changed. If the H component range includes 0 in the determination in step S201, the process proceeds to step S210. It is determined whether the H component h of the designated color is within the H component range (S210), and if it is not within the H component range, the H component range must be changed. It is determined whether the change amount of the start value hs or the end value he of the H component range is smaller (S211). If the change of the start value hs is smaller, h is set as the start value hs. (S212). If the change amount of the end value he is smaller, then h is set as the end value he (S213). If it is determined in step S210 that the H component h of the designated color is within the range, the H component range need not be changed.

After the processing of FIG. 5 is completed, step S10 of FIG.
Return to 4.

In FIG. 4, after the H component range additional setting in step S103 is completed, the S component range additional setting is performed next. It is determined whether or not the S component s of the designated color is smaller than the start value ss of the S component range (S104). If it is smaller, s is not within the S component range.
s (S105). Next, the S component s of the specified color
Is larger than the end value se of the S component range (S106). If larger, s is not in the S component range, so s is set as the s end value se (S107). next,
Performs additional setting of the V component range. V component of specified color v
Is smaller than the starting value vs of the V component range (S108). If smaller, v is not within the V component range, so v is set as the starting value vs (S109). Next, it is determined whether or not the V component v of the designated color is larger than the end value ve of the V component range (S110). If it is larger, v is not within the V component range, so v is set as the end value ve (S1).
11). Now, the color component range can be set from the specified color.

After the process of FIG. 4 is completed, the process returns to step S7 of FIG.

In FIG. 3, when the color component range to be dropped out is set as shown in FIG. 4, the color of the pixel of the color image constituted by the set dropout color component range is replaced (S7). ), The processed image is displayed in the processed image display area 25 (S8). When the operator designates the color to be replaced, either the color image display area 24 or the processed image display area 25 is enlarged, and when the display position is moved, the CPU 20 causes the other image to have the same position. If is displayed at the same magnification, it becomes easier to confirm the color replacement degree. If the operator specifies the range to be replaced by dragging the range, the CPU 20 may set the color component range from all the colors of the pixels within the range.
When the operator repeats this operation, the CPU 20 resets the color component range and replaces the colors one after another.

When the color which is not desired to be replaced is replaced by repeating the above operation, the operator specifies the plus designation button 30.
Is pressed (S9), the pointer 28 is set to the plus designation mode, the pointer 28 is moved onto the color image or the processed image, and a pixel that is not to be replaced is designated (S10). Then, the plus designation mode is set (S1
1), the CPU 20 resets the color component range excluding the color of the pixel of the color image at the designated position (S13). Figure 6 shows the case where the specified color is excluded from the set color component range.
Will be explained.

FIG. 6 is a flowchart showing a procedure for removing the designated color from the set color component range. In FIG. 6, the set color component range is hs ≦ H ≦ he,
ss ≦ S ≦ se, vs ≦ V ≦ ve, and the HSV components of the designated color are h, s, and v.

First, it is determined whether or not the H component h of the designated color is within the H component range (S301). If it is not within the H component range, the process ends. If it is within the range, it is determined whether the S component s of the designated color is within the S component range (S302). If it is not within the S component range, the process ends. If it is within the range, it is determined whether or not the V component v of the designated color is within the V component range (S303). If it is not within the V component range, the process ends. If it is within the V component range, the specified color is within the color component range, so the start value and end value of the H component range, the start value and end value of the S component range, V
Change either the start value or end value of the component range,
The specified color must be outside the color component range. Value h if the start value of the H component range is changed
Let s'be h + 1. Similarly, the value he 'when the end value of the H component range is changed to h-1, the value ss' when the start value of the S component range is changed to s + 1, and the value s' when the end value of the S component range is changed. The value se ′ is s−1, the value vs ′ when the start value of the V component range is changed is v + 1, and the value ve ′ when the end value of the V component range is changed is v−1 (S3).
04). Then, the one with a smaller change rate is obtained (S305). Next, when it is determined that the change rate is the smallest when the start value of the H component range is changed (S30
6), the starting value hs of the H component range is set to hs' (S30
7) and the process ends. If it is determined that the change rate is the smallest when the end value of the H component range is changed (S308), H
The end value he of the component range is set to he '(S309), and the process ends. When it is determined that the change rate is the smallest when the start value of the S component range is changed (S310), the start value ss of the S component range is set to ss' (S311), and the process ends. When it is determined that the change rate is the smallest when the end value of the S component range is changed (S312), the end value se of the S component range is set.
Is set to se '(S313), and the process ends. When it is determined that the change rate is the smallest when the start value of the V component range is changed (S314), the start value vs of the V component range is set to vs' (S315), and the process ends. If it is determined in step S314 that this is not the case, since the change rate is the smallest when the end value of the V component range is changed, the end value ve of the V component range is set to ve '(S316), and the process ends.
The specified color can now be removed from the color component range.

In the present embodiment, the color component range is changed so that the change ratio is small. However, when setting the color component range from the designated color, each of the H component, S component, and V component is changed. By creating a histogram for the values and removing the designated color from the color component range, it is possible to reduce the effect as much as possible by changing the deleted histogram having a smaller area.

When the process of FIG. 6 is completed, the process returns to step S7 of FIG. When the color component range is set, the color of the pixel of the color image composed of the color component range is replaced (S
7), display the processed image in the processed image display area 25 (S
8). When the operator repeats this operation, the CPU 20
Remove the specified color from the color component range and restore the colors one after another. When the processed image becomes the desired image, the operator presses the read button 27 (S9). Then CPU2
In the case of 0, the set color component range is designated to the scanner 21 (S14), and a reading instruction is given (S15). And
The same desired image as the processed image is received (S16), and the image is displayed (S17).

As described above, according to the present embodiment, the image reading means 1 for reading a color image from a document, the color image storage device 2 for storing the color image read by the image reading means 1, and the read color image. A color image display unit 3, a color replacement unit 5 that replaces a color of a pixel of a color image composed of a set predetermined color component range with a predetermined color, and a processed image that is the replaced image is displayed. The processed image display device 6, the color deletion designating unit 7 for designating the position of the pixel of the stored color image or the processed image, and the color of the pixel of the color image at the position designated by the color deletion designating unit 7. And a color component range storage unit 9 for storing the color component range set by the color component range setting unit 4. The color component range setting means 4 resets the color component range every time it is designated by the color deletion designating means 7, and the color replacement means 5 replaces the color of the pixel of the reset color component range, The image display device 6 acquires the color of the pixel of the color image at the position specified by the color deletion specifying means 7 by updating and displaying the image in which the color has been replaced, and sets a predetermined color component range from the acquired color of the pixel. Since the color component range is set again every time it is set and designated by the color deletion designating means 7, the proper color component range can be easily checked while confirming the color replacement result by one temporary reading. Can be obtained.

Further, the color component range setting means 4 has a color addition specifying means 8 for specifying the position of a pixel of an image of either a color image or a processed image, and the color component range setting means 4 is specified by the color addition specifying means 8. The color of the pixel of the color image at the position specified for each is acquired, the color component range excluding the acquired color is reset, and the color replacement unit 5 replaces the pixel of the reset color component range, and the processed image The display device 6 updates and displays the color-replaced image to acquire the color of the pixel of the color image at the position specified each time the position is specified by the color addition specifying means 8, and removes the acquired color. Since the color component range is set again, it is possible to easily obtain an appropriate color component range while confirming the color replacement result with one temporary reading.

[0034]

As described above, according to the color component range determining device of the first aspect of the present invention, an image reading device for reading a color image from a document and a color image read by the image reading device are stored. The color image storage device, the color image display device for displaying the read color image, and the color replacement means for replacing the color of the pixel of the color image composed of the set predetermined color component range with the predetermined color are replaced. A processed image display device that displays a processed image that is an image, a color deletion designating unit that designates the position of a pixel of an image of a stored color image or a processed image, and a color at the position designated by the color deletion designating unit. A color component range setting unit that acquires a color of a pixel of an image and sets a predetermined color component range from the acquired pixel color, and a color component that stores the color component range set by the color component range setting unit The color component range setting means resets the color component range every time it is designated by the color deletion designating unit, and the color replacement means replaces the colors of the pixels in the reset color component range, The processed image display device acquires the color of the pixel of the color image at the position specified by the color deletion specifying unit by updating and displaying the image in which the color has been replaced, and sets a predetermined color component range from the acquired color of the pixel. In addition, since the color component range is set again each time it is designated by the color deletion designation section, an appropriate color component range can be easily obtained while confirming the color replacement result with one temporary reading. The advantageous effect that it can be obtained is obtained.

According to the color component range determination device of the second aspect, in the color component range determination device of the first aspect,
The color component range setting means has a color addition designating section for designating a position of a pixel of an image of either the color image or the processed image, and the color component range setting means sets the color at the designated position every time the position is designated by the color addition designating section. The color of the pixel of the image is acquired, the color component range excluding the acquired color is reset, the color replacement unit replaces the pixel of the reset color component range, and the processed image display device displays the image with the replaced color. By updating and displaying, the color of the pixel of the color image at the specified position is acquired every time the position is specified from the color addition specifying part, and the color component range excluding the acquired color is reset. The advantageous effect that an appropriate color component range can be easily obtained while confirming the color replacement result by one temporary reading is obtained.

[Brief description of drawings]

FIG. 1 is a block diagram showing a color component range determination device according to a first embodiment of the present invention.

FIG. 2 is a block diagram illustrating a color component range setting unit and a color replacement unit of FIG.
Hardware configuration diagram when implemented by U

FIG. 3 is a flowchart showing the operation of the color component range determination device of FIGS. 1 and 2.

FIG. 4 is a flowchart showing a procedure for setting a dropout color component range from a designated color.

FIG. 5 is a flowchart showing a procedure for additional setting of the H component range.

FIG. 6 is a flowchart showing a procedure for removing a designated color from a set color component range.

[Explanation of symbols]

1 Image reading means 2 Color image storage means 3 Color image display means 4 color component range setting means 5 color replacement means 6 Processed image display means 7 color deletion designation means 8 colors additional specification means 9-color component range storage means 20 CPU 21 Scanner 22 memory 22a Color image memory 22b Color component range memory 23 Display 24 color image display area 25 Processed image display area 26 Temporary scan button 27 Read button 28 pointers 29 Minus designation button 30 plus designation button 31 mice

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 5B057 BA24 BA25 BA26 CA01 CA08                       CA12 CA16 CB01 CB08 CB12                       CB16 CC01 CE11 CE17 CH08                       CH11 CH18                 5C077 LL16 LL17 MM20 MP08 PP19                       PP35 PP37 PQ08 PQ12 PQ20                       PQ22 SS01 SS05 SS06                 5C079 HB06 LA02 LA31 LB12 MA02                       MA11 MA17 MA19 NA17 NA27

Claims (2)

[Claims] 1. An image reading device for reading a color image from a document, a color image storage device for storing the color image read by the image reading device, and a color image display device for displaying the read color image are set. A color replacement unit that replaces a color of a pixel of the color image having a predetermined color component range with a predetermined color, a processed image display device that displays a processed image that is the replaced image, and the stored color image Alternatively, a color deletion designating unit that designates the position of a pixel of one of the processed images, and a color of the pixel of the color image at the position designated by the color deletion designating unit are acquired, and the color of the acquired pixel is acquired. A color component range setting means for setting a predetermined color component range, and a color component range storage device for storing the color component range set by the color component range setting means. The range setting means resets the color component range each time it is designated by the color deletion designating unit, the color replacing means replaces the colors of the pixels in the reset color component range, and the processed image display device is configured to An apparatus for determining a color component range, characterized in that an image in which colors are replaced is updated and displayed. 2. A color addition designating unit for designating a position of a pixel of an image of either the color image or the processed image, wherein the color component range setting unit is designated by the color addition designating unit. Each time, the color of the pixel of the color image at the specified position is acquired, the color component range excluding the acquired color is reset, and the color replacement unit replaces the pixel of the reset color component range. The color component range determination device according to claim 1, wherein the processed image display device updates and displays the image in which the color is replaced.