JP6261328B2 - Color name output device, color name output method, and color name output program - Google Patents

Description

  The present invention relates to an apparatus, method, and program for outputting color names of image data.

  The color display on the data broadcast screen of the television is the code corresponding to the color name in the BML program (ARIB STD-B.24 “Data broadcast encoding method and transmission method in digital broadcast”), and the color display on the Web page screen This is realized by describing a code corresponding to the color name in the HTML program.

The video level of the specified point of the image taken with the portable camera is converted to the coordinate value of the color space L ^* a ^* b ^* , and the corresponding conventional color name and system color name are converted from the coordinate value and color name correspondence file. There has been proposed a system for display or voice (see, for example, Patent Document 1). In addition, an apparatus has been proposed that can notify color names before and after color conversion for color blindness support by this color name recognition process (see, for example, Patent Document 2).
The video level of each point in the image data is converted to the coordinate value of the color space L ^* a ^* b ^* , the coordinate value is associated with the color name in the color name database, and the brightness, saturation, and hue are not 0 before and after color conversion. Regarding the point, an apparatus that simultaneously displays the magnitude of the change has been proposed (see, for example, Patent Document 3).

As a display device that can be easily seen by a wide range of users from young people to elderly people, a correction display system including a process for increasing the sharpness of an image and a process for correcting a decrease in color contrast has been proposed (for example, Non-Patent Document 1, (See Patent Document 4). In addition to this, a method of reproducing or correcting the visual field of the visually impaired has been proposed (see, for example, Patent Document 5).
In order to provide screen color schemes that are easy to see for elderly people and people with color vision deficiencies, a support device has been proposed in which a difficult-to-view area on the screen is detected so that the designer can correct the colors to be easy to see (for example, Patent Document 6, Patent Document). 7) In addition, in order to diagnose whether the creation of Web pages is easy to read for visually handicapped and color blind people, software has been developed that manually specifies the background and characters and determines the brightness difference between them. (For example, refer nonpatent literature 2).
There has been proposed a device that detects an edge in an image and thickens the peripheral portion of a character, for example, so that it can be easily seen by a person with color blindness (see, for example, Patent Document 8).

JP 2005-004495 A JP 2007-115123 A JP 2010-45676 A JP-A-9-97333 JP 2003-58875 A Japanese Patent No. 4950867 JP 2013-145514 A JP 2013-110617 A

Higuchi et al., “Correction display system considering deterioration of visual characteristics due to aging”, Journal of the Institute of Image Information and Television Engineers, Vol. 53, no. 9, pp. 1285-1291 (1999) Takamoto et al., “Web Accessibility Diagnostic Tool”, FUJITSU. 56, 2, pp. 167-173 (03.2005)

A code corresponding to a color name used on a television data broadcast screen, a Web page screen, or the like is not given to an image captured by a camera.
In the case of determining a color name from an image, in Patent Documents 1 to 3, an association between a coordinate value and a color name in the color space L ^* a ^* b ^* is given, or brightness, saturation, and hue are set. Each color is divided equally and given a color name. For this reason, there is a possibility that the color name is not equal to the color perception characteristics of human beings that are not equally spaced and are equally divided including colors other than the actually existing colors.

  An object of the present invention is to provide a color name output device, a color name output method, and a color name output program that can easily identify difficult-to-identify colors in an image.

  The color name output device according to the present invention includes: a designation unit that accepts designation of a processing target color; an identification unit that identifies a same color region having a color difference from the processing target color less than a predetermined value in the input image data; and the same color region A conversion unit that generates output image data obtained by converting each of the pixels into a color different from the processing target color, and the perception information of each color is a predetermined color for the processing target color and the color converted by the conversion unit A determination unit that determines a color name corresponding to the hue region depending on which hue region belongs in advance on the degree diagram, and information on the color name determined by the determination unit together with the output image data An output unit for outputting.

  According to this configuration, the color name output device identifies the same color area having the same color as the part specified by the user in the input image, converts the same color area to another color, and is divided on the chromaticity diagram. The color name before and after conversion determined by the selected area is added to the image or indicated by sound. As a result, the user can easily identify colors that are difficult to identify.

  The color name output device according to the present invention corresponds to each of the pixels of the input image data depending on which hue region the perceptual information of the pixel belongs to in a predetermined hue region on a predetermined chromaticity diagram. A determination unit that determines a color name; a specification unit that receives a specification of a processing target color; an identification unit that identifies the same color region having the same color name as the processing target color in the input image data; and A conversion unit that generates output image data in which each pixel is converted to a color different from the processing target color, and an output that outputs information on color names before and after conversion by the conversion unit for the same color region together with the output image data A section.

According to this configuration, the color name output device identifies the same color area having the same color as the part specified by the user in the input image, converts the same color area to another color, and is divided on the chromaticity diagram. The color name before and after conversion determined by the selected area is added to the image or indicated by sound. As a result, the user can easily identify colors that are difficult to identify.
Furthermore, the color name output device can assign a color name to each pixel in advance by the determination unit prior to receiving a color designation from the user. Therefore, since the calculation of the color difference between pixels is not necessary, the color name output apparatus can reduce the processing load of the identification unit and increase the overall processing speed for outputting the color name.

  The hue region may be divided by a function that approximates a boundary line of each hue.

  According to this configuration, since the color name output device classifies each hue area on the chromaticity diagram by a function that approximates the boundary line of each hue, the color perception characteristic is based on the coordinates on the chromaticity diagram. It is possible to easily determine the color name according to the accuracy.

  The determination unit may adjust the color name based on saturation defined on the chromaticity diagram.

  According to this configuration, the color name output device adjusts the color name according to the saturation defined on the chromaticity diagram, and therefore can appropriately output the subdivided color name.

  The determination unit may adjust the color name based on brightness.

  According to this configuration, the color name output device adjusts the color name according to the lightness, and thus can appropriately output the subdivided color name.

  The color name output method according to the present invention includes a designation step for accepting designation of a processing target color, an identification step for identifying a same color area having a color difference from the processing target color less than a predetermined value in the input image data, and the same color area A conversion step for generating output image data obtained by converting each of the pixels into a color different from the processing target color, and the perception information of each color is a predetermined color for the processing target color and the color after the conversion by the conversion step A determination step for determining a color name corresponding to the hue region depending on which hue region belongs in advance on the degree diagram, and information on the color name determined in the determination step together with the output image data The computer executes an output step of outputting.

  In the color name output method according to the present invention, for each pixel of the input image data, the perception information of the pixel corresponds to the hue area depending on which hue area is divided in advance on a predetermined chromaticity diagram. A determination step for determining a color name; a designation step for accepting designation of a color to be processed; an identification step for identifying the same color region having the same color name as the color to be processed in the input image data; A conversion step for generating output image data in which each pixel is converted to a color different from the processing target color, and an output for outputting information on color names before and after conversion by the conversion step for the same color region together with the output image data And the computer executes the steps.

  The color name output program according to the present invention includes a designation step for accepting designation of a processing target color, an identification step for identifying a same color area having a color difference from the processing target color less than a predetermined value in the input image data, and the same color area A conversion step for generating output image data obtained by converting each of the pixels into a color different from the processing target color, and the perception information of each color is a predetermined color for the processing target color and the color after the conversion by the conversion step A determination step for determining a color name corresponding to the hue region depending on which hue region belongs in advance on the degree diagram, and information on the color name determined in the determination step together with the output image data And causing the computer to execute an output step of outputting.

  The color name output program according to the present invention corresponds to each pixel of the input image data depending on which hue region the perceptual information of the pixel belongs to in a predetermined hue region on a predetermined chromaticity diagram. A determination step for determining a color name; a designation step for accepting designation of a color to be processed; an identification step for identifying the same color region having the same color name as the color to be processed in the input image data; A conversion step for generating output image data in which each pixel is converted to a color different from the processing target color, and an output for outputting information on color names before and after conversion by the conversion step for the same color region together with the output image data And causing the computer to execute the steps.

  According to the present invention, difficult-to-identify colors in an image can be easily identified.

It is a block diagram which shows the structure of the color name output device which concerns on 1st Embodiment. It is a figure which shows a mode that distribution of the Munsell color system data was plotted on the chromaticity diagram for every hue. It is a figure which shows an example of the image currently used by the weather forecast. It is a figure which shows an example of the output image after color conversion. It is a block diagram which shows the structure of the color name output device which concerns on 2nd Embodiment.

[First Embodiment]
The first embodiment of the present invention will be described below.
The color name output device 1 of the present embodiment receives, for example, a weather forecast screen of a television, a data broadcast screen, an image embedded in a Web page, an image taken by a camera, or the like, and a part or color name group designated by a user The areas having the same color as the color selected from the above are identified, these areas are converted into different colors, and the color names before and after the conversion are output together with the image in text or sound.

FIG. 1 is a block diagram showing the configuration of the color name output device 1.
The color name output device 1 includes a designation unit 11, an identification unit 12, a conversion unit 13, a determination unit 14, and an output unit 15.

  The designation unit 11 accepts designation of a processing target color in the color name output process. Specifically, for example, the color of a point (pixel) in input image data selected by a user with a mouse or a touch panel or the color selected from a predetermined color name group provided in advance becomes the processing target color. .

The identification unit 12 identifies the same color area having a color difference from the processing target color less than a predetermined value in the input image data, and the position information (coordinates) of the same color area and the image data (the red signal R, the green signal G, and the blue signal B). Level information).
Specifically, for example, the identification unit 12 compares the color to be processed and the RGB pixel level from the end in the horizontal direction or the vertical direction of the input image data, and for pixels whose difference is smaller than a preset value, Are output together with image data as position information of the pixels.

Further, the identification unit 12 may use a color difference formula proposed in the CIE1976L ^* a ^* b ^* color system or CIE1976L ^* u ^* v ^* color system that matches human perception (edited by the Japan Color Society). , New Color Science Handbook, 2nd edition, pp. 275-277).
For example, in the L ^* a ^* b ^* color system, the data conversion and the color difference ΔE between two points (point 1 and point 2) are derived by the following equation.
_{^{L * = 116 (Y / Y}} n) 1/3 -16
_{^{a * = 500 [(X /}} X n) 1/3 - (Y / Y n) 1/3]
_{^{b * = 200 [(Y /}} Y n) 1/3 - (Z / Z n) 1/3]
_{^{ΔE = √ {(L * 1}} -L * 2) 2 + (a * 1 -a * 2) 2 + (b * 1 -b * 2) 2}
X, Y, and Z are values in the XYZ color system converted from the RGB color system, and X _n , Y _n , and Z _n are reference white point values.

The identification unit 12 may output pixel position information with a color difference ΔE from the processing target color smaller than a preset value together with image data as position information of the same color region. In this case, position information of the same color area and image data (red signal R, green signal G, blue signal B level information and perceptual information such as L ^* , a ^* , b ^*, etc.) are output.

The conversion unit 13 converts the image data of the same color area output from the identification unit 12 into perceptual information, then converts each pixel of the same color area to a color different from the processing target color, and the position information and image of the same color area Output image data including data (level information of red signal R, green signal G, and blue signal B, and perceptual information such as L ^* , a ^* , and b ^* ) is generated.
In addition, the conversion part 13 can abbreviate | omit the conversion process from image data to perceptual information, when perceptual information is acquired from the identification part 12. FIG.

Here, the conversion unit 13 may convert each pixel in the same color area into, for example, a color opposite to the processing target color (a ^* is −a ^* , b ^* is −b ^* ). Alternatively, the conversion unit 13 may convert each pixel in the same color region into a predetermined color such as white or black.

For the color to be processed and the color after conversion by the conversion unit 13, the determination unit 14 preliminarily displays perception information of each color on a predetermined chromaticity diagram (for example, an xy chromaticity diagram or an a ^* b ^* chromaticity diagram). A color name assigned in advance to the hue area is determined depending on which of the divided hue areas it belongs to. Thereby, the determination unit 14 outputs the color name of the area designated in the original image and the color name of the converted color.
The hue region is classified by a function that is formulated by approximating the boundary line of each hue based on human color perception characteristics regarding the existing color.

Further, the determination unit 14 is based on the lightness (for example, V in the Munsell color system or Y in the XYZ color system) and the saturation (for example, C ^* described later) defined on the chromaticity diagram. Adjust the color name.

The output unit 15 outputs information on the color name determined by the determination unit 14 together with the output image data.
Specifically, the output unit 15 displays, for example, the name of the color to be processed and the color name of the conversion color superimposed on the output image data output from the conversion unit 13 or output with sound. At this time, the output unit 15 preferably displays a color name associated with the selected pixel or region or the same color region.
Further, the output unit 15 may alternately display the input image data and the output image data, and blink the original image color and the converted color. In this case, the output unit 15 may display only the color name for the original image.

Next, the color name determination method by the determination unit 14 will be described in detail.
In the Munsell color system that matches human perception, colors are represented by three attributes (hue H, lightness V, and saturation C). For example, xy chromaticity point data has been released for the existing 2734 colors subdivided in terms of hue, lightness, and saturation (Munsell Relocation Data, [online], [searched on September 30, 2013], Internet) <Http://www.cis.rit.edu/research/mcsl2/online/munsell.php>). The actual color data in the Munsell color system is not a spherical color space but a distorted space.

FIGS. 2A to 2J are diagrams illustrating the distribution of Munsell color system data plotted on the a ^* b ^* chromaticity diagram in the L ^* a ^* b ^* space for each hue.

In the color name determination method based on the a ^* b ^* chromaticity diagram, the hue H has 10 types, the lightness V has 9 types, and the chroma C has different numbers depending on H and V, but is divided into 19 types at the maximum. When outputting ten types of hue names, a function f representing both outer frames for each distribution shown in FIG. 2 is defined as follows.
b ^* = f (a ^* )
This function f is obtained by linear approximation, polynomial approximation, exponential approximation, or the like according to each distribution.
As the hue H increases, the distribution moves counterclockwise, and when adjacent hue distributions overlap, the contour portion (for example, one of the outer frames or the middle line of both) is separated. In this case, one of the outer frames (for example, a distribution with the maximum hue H such as 10G) is approximated by the function f as a hue boundary.

For example, for green G, a function that approximates a distribution with a minimum hue H, that is, a boundary line with yellowish green GY,
b ^* = f_minG (a ^* )
And a function approximating the distribution with the maximum hue H, that is, the boundary line with the blue-green BG,
b ^* = f_maxG (a ^* )
And
Further, a point on the a ^* b ^* chromaticity diagram of the pixel for which the color name determination is performed is (a ₀ ^* , b ₀ ^* ).

At this time, if “a ₀ ^* <0” and “b ₀ ^* > 0”, the target pixel is any one of Y (yellow), GY (yellow green), and G (green), and “b ₀ ^* In the case of <f_minG (a ₀ ^* ) ”, the determination unit 14 determines that the target pixel may be“ green ”.
In the case of “b ₀ ^* > f_minG (a ₀ ^* )”, the target pixel is Y (yellow) or GY (yellow green), and if the same processing is applied to GY, the determination unit 14 It is possible to determine whether there is a possibility of “yellow” or “yellow-green”.

Next, the determination unit 14 adjusts the hue determination result based on the saturation C ^* .
The determination unit 14 calculates the saturation C ^* from the point (a ₀ ^* , b ₀ ^* ) on the chromaticity diagram that has been determined to be “green” as follows.
C ^* = (a ₀ ^{* 2} + b ₀ ^{* 2} ) ^1/2

When “C ^* <preset lower limit value (for example, 12)”, the determination unit 14 determines that the target pixel may be “gray” instead of “green”.
When “C ^* > preset upper limit value”, the determination unit 14 determines that the target pixel may be “bright green” or “dark green”.

Furthermore, the determination unit 14 adjusts the brightness determination result and the adjustment result based on the brightness V.
When there is a possibility of “gray”, the determination unit 14 determines “white”, “gray with whiteness”, “light gray”, or the like if V is large (eg, 7 or more or 8 or more), If V is small (for example, 2 or less or 3 or less), it is determined as “black”, “gray with blackness”, “dark gray”, or the like.
For example, the determination unit 14 determines “white” when “V ≧ 9” and “C ^* ≦ lower limit”, and “black” when “V ≦ 1” and “C ^* ≦ lower limit”. May be.

In addition, the determination unit 14 determines that there is a possibility of “green”, and if “preliminary lower limit value ≦ C ^* ≦ predetermined upper limit value”, if V is large (for example, 7 or more or 8 or more) ), “Bright green” or “green with whiteness” is determined, and if V is small (for example, 2 or less or 3 or less), the modification name is “dark green” or “green with blackness”. Determine.

  Here, the brightness V has a corresponding relationship defined with the luminance Y of the XYZ color system, and V = 1 to 9 is Y = (0.0121, 0.03126, 0.06555, 0.12, respectively). 0.1977, 0.3005, 0.4306, 0.591, 0.7866).

  Note that the determination unit 14 sets a boundary line of the hue H based on each of a plurality of distribution diagrams for each of the lightness V or V groups (for example, 1 to 3, 4 to 6, and 7 to 9). May be determined. Since the distribution on the chromaticity diagram may fluctuate greatly depending on the lightness V even if the hue H is the same, improvement in the accuracy of hue determination can be expected by providing a determination criterion for each lightness V.

The color names in this embodiment are examples. The color name may be determined from the total number of names, and may be determined using a JIS common name (JIS Z 8102: 2001 color name of the object color).
Further, although the color name output device 1 of the present embodiment uses the a ^* b ^* chromaticity diagram, the same processing can also be performed using the xy chromaticity diagram.

  According to the present embodiment, the color name output device 1 has, for example, a weather forecast screen of a television, a data broadcast screen, an image embedded in a web page, an image taken by a camera, etc., having the same color as the part designated by the user. The same color area is identified, the same color area is converted into another color, and the color names before and after conversion determined by the area divided on the chromaticity diagram are added to the image or indicated by sound. As a result, the user can easily identify colors that are difficult to identify.

FIG. 3 is a diagram illustrating an example of an image used in the weather forecast.
Although the temperature of each region is color-coded according to the range, there are cases where it is difficult to distinguish between colors of different temperature ranges due to the color vision characteristics of the user. In this case, the same color region 21 is identified for the designated point 20 selected by the user.

FIG. 4 is a diagram illustrating an example of an output image after color conversion.
The same color area 21 is converted into a color different from the original color, and the color name 22 before and after conversion is displayed.
Thereby, the user can distinguish easily the color after conversion, and the color of another temperature range. Furthermore, by adding the color names before and after conversion, the user can grasp the contents of the color conversion and can use it for information sharing with others.

Broadcast stations frequently use CG images when reporting news, weather, and the like. In satellite digital broadcasting and terrestrial digital broadcasting, broadcasting stations transmit data broadcasts, and image data is used in production of these.
According to the present embodiment, when the user designates a “difficult area” on the broadcast screen or selects a color name, the color name output device 1 automatically identifies the same color area and performs color conversion, By outputting the color names before and after conversion, it is possible to make the “difficult region” easy to see.
Also, the color name output device 1 can provide information by outputting the color name of an arbitrary part designated by the user with a pointer or the like on the data broadcast screen.

Since the color name output device 1 classifies each hue area on the chromaticity diagram by a function that approximates the boundary line of each hue, the color name corresponding to the color perception characteristic based on the coordinates on the chromaticity diagram. Can be easily and accurately determined.
Further, since the color name output device 1 adjusts the color name according to the saturation C ^* and the lightness V, the subdivided color name can be appropriately output.

Since the color name output apparatus 1 accepts designation of a processing target color by selecting a pixel in the input image data, the user can designate an arbitrary area in the image, and convenience is improved.
Further, since the color name output device 1 accepts designation of a processing target color by selecting from a predetermined color name group, the user selects a color name that is difficult to identify from a list prepared in advance. The same color area in the image can be easily grasped.

The color name output device 1 converts each pixel in the same color region to an opposite color before conversion, or alternately outputs a color before conversion and a color after conversion. Thereby, the user can easily grasp the same color area.
Note that the color name output device 1 may perform color conversion according to a conversion rule defined in advance according to the color vision characteristics of the user. Further, the color name output device 1 may determine a color that can be easily identified in accordance with the hue around the same color region.

[Second Embodiment]
Hereinafter, a second embodiment of the present invention will be described.
The color name output device 1a according to the present embodiment identifies a region having the same color as a color selected from a portion or color name group designated by the user by determining in advance the color name of each pixel in the input image, These areas are converted into different colors, and the color names before and after conversion are output together with the image in text or sound.

FIG. 5 is a block diagram showing the configuration of the color name output device 1a.
The color name output device 1a includes a designation unit 11, an identification unit 12a, a conversion unit 13, a determination unit 14a, and an output unit 15.
The designation unit 11, the conversion unit 13, and the output unit 15 have the same functions as those in the first embodiment.

The determination unit 14a converts the input image data into perceptual information, and then the perceptual information of each pixel is preliminarily partitioned on a predetermined chromaticity diagram (for example, an xy chromaticity diagram or an a ^* b ^* chromaticity diagram). The color name assigned in advance to the hue area is determined depending on whether it belongs to the hue area. Thereby, the determination unit 14a outputs the input image data and the label number corresponding to the color name of each pixel. Note that the hue region classification and determination method are the same as those in the first embodiment.

Here, the label number is, for example,
Black = 1, White = 2
Gray = 3, dark gray = 4, light gray = 5,
Red purple = 6, red = 7, red green = 8, yellow = 9, yellow green = 10, green = 11, blue green = 12, blue = 13, blue purple = 14, purple = 15,
Dark red purple = 16, dark red = 17, ...
It is given as follows.

  The designation unit 11 is the position information (coordinates, etc.) of the point designated by the user with the mouse or touch panel, or the color name (label number) assigned to the color selected by the user from the color name group. Is output to the identification unit 12a.

  The identification unit 12a identifies a region having the same label number by using the label number for each pixel output from the determination unit 24 and the position information or label number output from the designation unit. When using the position information, the identification unit 12a identifies a region having the same label number as the label number corresponding to the designated position information, based on the label number for each coordinate output from the determination unit 14a.

The conversion unit 13 converts image data (level information of red signal R, green signal G, and blue signal B and perceptual information such as L ^* , a ^* , and b ^* ) identified by the identification unit 12a. The conversion method is the same as in the first embodiment.

The output unit 15 displays the color name of the designated point of the original image output from the identification unit 12a and the color name of the converted color at the point added to the image data output from the conversion unit 13, or Output by voice. When blinking the original image color and the converted color, the output unit 15 may display only the color name for the original image.
In addition, when the color name after conversion by the conversion unit 13 is not a predetermined color (white or black), for example, when the conversion unit 13 outputs an opposite color or the like, the output unit 15 is based on the perceptual information after conversion. Thus, the color name may be determined by the function of the determination unit 14a (the determination unit 14 of the first embodiment).

  According to the present embodiment, the color name output device 1a is, for example, a TV weather forecast screen, a data broadcast screen, an image embedded in a Web page, an image taken by a camera, etc., and the same color as the part designated by the user The same color area is identified, the same color area is converted into another color, and the color names before and after conversion determined by the area divided on the chromaticity diagram are added to the image or indicated by sound. As a result, the user can easily identify colors that are difficult to identify.

  Furthermore, the color name output device 1a can assign a color name (label number) to each pixel in advance by the determination unit 14a prior to receiving a color designation from the user for a CG screen or the like in broadcasting. Therefore, since the calculation of the color difference between the pixels becomes unnecessary, the color name output device 1a can reduce the processing load of the identification unit 12a and increase the overall processing speed for outputting the color name.

  As mentioned above, although embodiment of this invention was described, this invention is not restricted to embodiment mentioned above. Further, the effects described in the present embodiment are merely a list of the most preferable effects resulting from the present invention, and the effects of the present invention are not limited to those described in the present embodiment.

  The present invention is not limited to broadcast data, and can be applied to various image data. For example, a user can take a color-coded route map of a station with a portable camera and designate a “difficult part” to automatically convert the same color area and display the color names before and after conversion. . In addition, the present invention can be used, for example, to make it easy to see the “difficult region” of an image embedded in a Web page, and has versatility such that a comparison target can be managed by a color name in color design production. .

  In addition, the color name output device may include means for performing color conversion according to the color vision characteristic pattern in order to reproduce the appearance to others with different color vision characteristics. Thereby, the color name output device can be effectively used for screen design creation, for example.

  In the present embodiment, the configuration and operation of the color name output apparatus have been mainly described. However, the present invention is not limited to this, and the present invention is not limited to this, and may be configured as a method or program for outputting color names. Good.

  Further, the present invention may be realized by recording a program for realizing the function of the color name output device on a computer-readable recording medium, causing the computer system to read and execute the program recorded on the recording medium. Good.

  The “computer system” here includes an OS and hardware such as peripheral devices. The “computer-readable recording medium” refers to a storage device such as a portable medium such as a flexible disk, a magneto-optical disk, a ROM, and a CD-ROM, and a hard disk built in the computer system.

  Furthermore, “computer-readable recording medium” means that a program is dynamically held for a short time, like a communication line when transmitting a program via a network such as the Internet or a communication line such as a telephone line. It is also possible to include one that holds a program for a certain time, such as a volatile memory inside a computer system that becomes a server or client in that case. Further, the program may be for realizing a part of the above-described functions, and may be capable of realizing the above-described functions in combination with a program already recorded in the computer system. .

DESCRIPTION OF SYMBOLS 1, 1a Color name output device 11 Specification part 12, 12a Identification part 13 Conversion part 14, 14a Determination part 15 Output part

Claims (9)

A specification unit that accepts specification of a processing target color;
An identification unit that identifies the same color region having a color difference from the processing target color less than a predetermined value in the input image data;
A conversion unit that generates output image data obtained by converting each pixel in the same color region into a color different from the processing target color;
As for the color to be processed and the color after conversion by the conversion unit, it is determined whether the perception information of each color belongs to which hue region is divided in advance on a predetermined chromaticity diagram based on human color perception characteristics. and a border divided by a function that approximates the non-linear, determination unit color name corresponding to the hue region,
An output unit that outputs information on the color name determined by the determination unit together with the output image data. For each pixel of the input image data, the boundary line of each hue is nonlinearly approximated to which hue region the perceptual information of the pixel belongs to on the predetermined chromaticity diagram based on human color perception characteristics and it was classified by function, determination unit color name corresponding to the hue region,
A specification unit that accepts specification of a processing target color;
Among the input image data, an identification unit that identifies the same color region having the same color name as the color to be processed,
A conversion unit that generates output image data obtained by converting each pixel in the same color region into a color different from the processing target color;
A color name output device comprising: an output unit that outputs information of color names before and after conversion by the conversion unit for the same color region together with the output image data. The color name output device according to claim 1 , wherein the output unit alternately outputs the processing target color and a color after conversion by the conversion unit.   The color name output device according to any one of claims 1 to 3, wherein the determination unit adjusts the color name based on a saturation defined on the chromaticity diagram.   The color name output device according to claim 1, wherein the determination unit adjusts the color name based on lightness. A specification step for accepting specification of a processing target color;
An identification step for identifying a same color region having a color difference from the processing target color less than a predetermined value in the input image data;
A conversion step for generating output image data obtained by converting each pixel in the same color region into a color different from the processing target color;
The process target color, and the color after conversion by said conversion step, whether the color perception information based on the human color perception characteristic belongs in advance sectioned any hue regions on the diagram given chromaticity, the color A determination step of determining a color name corresponding to the hue region by classifying the boundary line of
A color name output method in which a computer executes an output step of outputting information on the color name determined in the determination step together with the output image data. For each pixel of the input image data, the boundary line of each hue is nonlinearly approximated to which hue region the perceptual information of the pixel belongs to on the predetermined chromaticity diagram based on human color perception characteristics a determining step of determining color name separately, corresponding to the hue region by a function that,
A specification step for accepting specification of a processing target color;
An identification step for identifying the same color region having the same color name as the processing target color in the input image data;
A conversion step for generating output image data obtained by converting each pixel in the same color region into a color different from the processing target color;
A color name output method in which a computer executes an output step of outputting, together with the output image data, color name information before and after conversion by the conversion step for the same color region. A specification step for accepting specification of a processing target color;
An identification step for identifying a same color region having a color difference from the processing target color less than a predetermined value in the input image data;
A conversion step for generating output image data obtained by converting each pixel in the same color region into a color different from the processing target color;
The process target color, and the color after conversion by said conversion step, whether the color perception information based on the human color perception characteristic belongs in advance sectioned any hue regions on the diagram given chromaticity, the color A determination step of determining a color name corresponding to the hue region by classifying the boundary line of
A color name output program for causing a computer to execute the output step of outputting the information of the color name determined in the determination step together with the output image data. For each pixel of the input image data, the boundary line of each hue is nonlinearly approximated to which hue region the perceptual information of the pixel belongs to on the predetermined chromaticity diagram based on human color perception characteristics a determining step of determining color name separately, corresponding to the hue region by a function that,
A specification step for accepting specification of a processing target color;
An identification step for identifying the same color region having the same color name as the processing target color in the input image data;
A conversion step for generating output image data obtained by converting each pixel in the same color region into a color different from the processing target color;
A color name output program for causing a computer to execute an output step of outputting, together with the output image data, information on color names before and after conversion by the conversion step for the same color region.

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