JPH10239155A - Method for color image judgment and color coordination method for building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To quantitatively judge the color image without requiring any professional person, by zoning the chromaticity diagram of a color system being expressed by two or three axes with a scale with a color image, reading a sample color by a color- measuring machine and numerically expressing it, and fitting it onto the chromaticity diagram of the color system with the scale of each axis as a base. SOLUTION: A color-measuring machine is applied to a sample to reach a sample color and to numerically express it. It is automatically judged which image zone the numerically expressed sample color is classified based on zoned data for each Munsell chroma 1 when obtaining which address of each Munsell chroma 1 being accumulated in a computer the numerically expressed sample color should be located. More specifically, the chromaticity diagram of the Munsell notation system is expressed by the Munsell chroma, and the chroma, and the relationship among three color attributes of chroma and brightness in each and arbitrary color phase is numerically expressed. For example, when the color phase brightness, and chroma of the sample color are 7R, 6V, and 7C, respectively, they are indicated at ○ position of the Munsell chroma 1 while numerically expressing.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for judging a color image and a method for color coordinating a building.

[0002]

2. Description of the Related Art Conventionally, in order to determine an image of a certain color, the image is compared with a representative color of each image which has already been set, and it is visually determined whether or not the image matches the representative color. If so, it was determined to belong to the image. When performing color coordination of a building, a plurality of types of color images (for example, a “warm” color image, a “fresh” color image, a “bright” color image) Color image, "dark" color image, etc.), and the representative color of each image is set.
When color coordinating buildings, the colors of interior elements such as interior materials, lighting fixtures, furniture, tableware, play equipment, and exterior elements such as roofs, exterior walls, exterior structures, benches, and exterior lighting fixtures, etc. For example, if the image of the color of the entire building is set to a "warm" image, the interior material, lighting equipment, furniture, tableware, playground equipment, roof, exterior wall, exterior While listening to the customer's request for the colors of interior elements and exterior elements such as construction, benches, exterior lighting fixtures, etc., the colors of each element are the representative colors of the "warm" color image that is the image of the building, respectively. Whether or not they are in harmony is visually determined one by one, and the color of each element is selected in this way to perform color coordination of the building.

[0003]

However, in the above-mentioned conventional example, since the color image judgment is visually judged one by one, the visual judgment requires specialized knowledge and experience. Must be an expert, and even if it is an expert, a person makes a visual judgment,
There has been a problem that the determination criteria are ambiguous, and individual differences occur in the determination.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and provides a color image determination method which can quantitatively and clearly determine a color image without requiring an expert. That is the first issue,
It is a second object of the present invention to provide a color coordination method for a building in which color coordination according to an image can be accurately performed using colors classified into images of the same color.

[0005]

In order to solve the above-mentioned problems, a color image judging method according to the present invention provides a method for displaying colors on a chromaticity diagram of a color system represented by two axes or three axes with a scale. The image is divided into zones, the sample colors are read by a colorimeter and quantified, and the quantified sample colors are applied to the chromaticity diagram of the color system based on the scale of each axis,
The image of the color is determined. By employing such a method, it is possible to quantitatively determine to which image zone the sample color belongs.

In the color coordinating method for a building according to the present invention, a chromaticity diagram of a color system expressed by two axes or three axes with a scale is divided into zones by a color image.
Read the sample color with a colorimeter and digitize it, apply the digitized sample color on the chromaticity diagram of the color system based on the scale of each axis, determine the image of the color, The interior element or the exterior element of each room of the building is color-coordinated using only the color determined to be the same image by the color image determination. By adopting such a method, it is possible to select each interior element and exterior element by using colors classified into the same image, and to perform harmonious color coordination of each interior element and exterior element.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments. In the accompanying drawings, an example of a Munsell color system represented by three axes will be described. FIG. 5 shows a three-dimensional image in which three elements called “hue”, “lightness”, and “saturation”, which are called three attributes of color, have hue as an outer periphery, lightness as a vertical axis, and saturation as a horizontal axis from the center. 3 is a three-dimensional diagram of hue, lightness, and saturation, which are considered as the following. The chromaticity diagram of the Munsell color system can be represented by a Munsell color chart, and this Munsell color chart can represent the relationship between the elements of the three color attributes of saturation and lightness in an arbitrary hue by numerical values. it can. FIGS. 1A and 1B show examples of the Munsell color chart 1, respectively.
R is a symbol defined in the Munsell hue circle (where R is an abbreviation of Red (red)). In the Munsell color chart 1, C represents saturation and V represents lightness. And
Assuming that the hue of the sample color to be determined as the target is 7R, the lightness is 6V, and the saturation is 7C, this color is shown in FIG.
In the Munsell color chart 1 of the hue 7R shown in (a), it can be determined to be located at the address indicated by ○. That is,
In FIG. 1A, the color at the position of ○ is (7R, 6V,
7C). Similarly, the hue 6YR in FIG. 1B (where YR is Yellow
In the Munsell color chart 1 (abbreviation of wRed), a color located at an address surrounded by a circle can be represented by a numerical value (6YR, 5V, 4C). Of course, the sample color is not only represented by integers in both lightness and saturation, but also can be represented as having a decimal point, such as (7R, 6, 2V, 7, 5C).

In the present invention, the technique of digitizing and representing the color of the sample to be determined as a target as described above is used. In addition to this, the chromaticity diagram (Munsell in the embodiment) is used. It is characterized in that the color chart 1) is zoned by a color image, and it is determined which zone the target sample color belongs to in the color image on the chromaticity diagram.

[0009] Here, when performing zoning based on color images, zoning is performed using a plurality of images of different or target colors, for example, "warm".
And the image of the color "refreshing". In addition, the image of the color "warm (strong, medium, weak)" and "fresh (strong,
Medium, weak) "
Or, it can be divided into four zones with the image of "spring, summer, autumn and winter", or it can be divided into the image of "bright" and the image of "dark", or "brilliant" Although it is possible to divide a color image into a color image and a color image of “dull”, it is not necessarily limited to the above example.

Now, an example in which zones are divided into an image of a color "warm" and an image of a color "refreshing" will be described. Hues are divided into an arbitrary number in the Munsell hue circle (for example, divided into 100 hues). The Munsell color patches 1 are formed by the divided number. In this case, the lightness and the saturation are also divided into a plurality of arbitrary steps in each Munsell color chart 1 (in each Munsell color chart 1, the lightness is divided into 8 steps of 2 to 9 and the saturation is divided into 13 steps. doing).

Next, for each color chart, that is, for each of the 100 types of Munsell color charts 1 in the embodiment, a zone A of a color image of "warm" and a zone B of a color image of "fresh" are formed. What separates. FIGS. 2 to 4 illustrate a plurality of examples of the Munsell color chart 1 divided into the image of the color "warm" and the image of the color "fresh". That is, FIGS. 2 to 4 show examples in which the Munsell color charts 1 having hues of 6R, 6YR, and 10Y (where Y is an abbreviation of Yellow) are zoned into a color image of “warm” and a color of “fresh”. ing. In FIGS. 2 to 4, the zone A of the image of the color “warm” is indicated by cross hatching for convenience, and the zone B of the image of the color “fresh” is hatched.

As described above, when the Munsell color chart 1 is divided into the zone A of the image of the color "warm" and the zone B of the image of the color "refreshing", the color of the sample of many colors is determined in advance. And set whether the color of the sample is classified into an image of a color “warm” or an image of a color “refreshing”. The color of the sample is converted into a numerical value as described above to determine which address of which Munsell color chart 1 is located. In this way, the lightness number and the saturation number of the Munsell color chart 1 for each hue are obtained. By deciding which image is the color of the address to be represented, for each Munsell color chart 1,
It can be divided into zone A of the image of the color “warm” and zone B of the image of the color “fresh”.

In setting whether the colors of the above-mentioned many samples are classified into the image of the color "warm" or the image of the color "fresh", the designer of the building, the designer of the interior, etc. Experts, or an unspecified number of people, to determine whether the color of each sample is "warm" or "fresh" image, or
Conventionally, in the design of a building or interior, a color that has been used as a color of a “warm” image or a color that has been used as a color of a “fresh” image is used as it is for the above-described zoning.

As described above, for each Munsell color chart 1 (in the embodiment, the hue is divided into 100 hues in the Munsell color circle, so for each 100 Munsell color chart 1), the image of the color "warm" is displayed. The data divided into the zone A and the zone B of the image of the color "refreshing" is stored in the computer 2 as a memory. on the other hand,
As shown in FIG. 6, a colorimeter 3 for reading and digitizing a sample color to be determined is connected to the computer 2. As the colorimeter 3, a conventionally known one can be adopted (for example, there is a "colorimeter manufactured by Minolta Camera Co., Ltd.").

In this embodiment, in order to determine which image zone a sample color belongs to, the colorimeter 3 is applied to a sample, the sample color is read by the colorimeter 3 and quantified. In determining which address of each Munsell color chart 1 stored in the computer 2 the digitized sample color is located in, data obtained by zoning each Munsell color chart 1 (that is, Munsell color chart in the embodiment) It is automatically determined which of the image zones is classified based on the data obtained by dividing the image into a zone A of an image of "warm" and a zone B of an image of "fresh". This is displayed by the display means.

In this manner, all the sample colors to be determined are read by the colorimeter 3 and quantified, and based on the digitized data of the sample colors, any one of a plurality of images set by the colors is determined. Can automatically be determined. In the above-described embodiment, the data divided into the zone A of the image of the color “warm” and the zone B of the image of the color “fresh” is stored in the computer 2 as a memory and read by the colorimeter 3. The computer 2 automatically determines which image zone the image is classified into, and displays it by the display means. For example, it is assumed that the image is zone A of an image of a color "warm". A table or booklet of the Munsell color chart 1 divided into a zone B having an image of a color "refreshing" may be created. In this case, the sample color is read by the colorimeter 3 and quantified, and the judge applies the quantified data to the table or booklet of the color table 1 and the address of the color table 1 and the address of the sample color. By determining at a glance whether or not the digitized data is located, it is possible to determine at a glance to which image zone the color addresses on the Munsell color table 1 obtained as described above belong to by zoning. Things.

Of course, whether the computer 2 determines to which image zone the image zone belongs or not by a person based on the sample color data read and digitized by the colorimeter 3, The numerical value read by the machine 3 is not only the case of brightness and saturation, but also the case where it is displayed as including a decimal point.
It is possible to determine at which address of each Munsell color chart 1 the data quantified with the saturation including the decimal point is located, and to determine which image zone the address belongs to.

In the above embodiment, an example of the Munsell color system represented by three axes of hue, lightness, and saturation has been described, but L ^* represented by three axes of hue, lightness, and saturation ^. a ^*
Each color image is a zone on the chromaticity diagram of the XYZ (Yxy) color system expressed by two axes of b color system, L ^* C ^* h color system, Hunter Lab color system, hue, and saturation. Then, the sample colors are read by the colorimeter 3 and quantified, and the quantified sample colors are applied to the chromaticity diagram of the color system based on the scales of the respective axes, and the image of the colors is expressed. It may be determined, or zoned by a color image on a color system chromaticity diagram represented by two axes or three axes with scales used in other televisions and printing,
The sample color is read by the colorimeter 3 and digitized, and the digitized sample color is applied to the chromaticity diagram of the color system based on the scale of each axis to determine the image of the color. It may be.

Next, a method of performing color coordination of a building based on the above-described color image determination method will be described. In other words, in performing color coordination of buildings, interior elements such as interior materials, lighting equipment, furniture, tableware, play equipment, roofs, exterior walls, exteriors,
The sample colors of exterior elements such as benches and external lighting fixtures are read by the colorimeter 3 and digitized, and the digitized sample colors are displayed on a chromaticity diagram of a color system stored in the computer 2. Apply based on the axis scale,
The image of the color is determined based on the image zone stored in advance and stored as data, and only the colors determined to be the same image by the above color image determination are interior elements of each room of the building, or The exterior elements are color coordinated. For example, now, when trying to color coordinate the interior of a building or the interior of each room, or exterior elements with the image of the color “warm”, interior elements such as interior materials, lighting equipment, furniture, tableware, play equipment, etc. , Roof, exterior wall, exterior structure, bench, exterior lighting such as exterior lighting fixtures, judge the image as described above, select only the elements that are determined to be images of "warm" color, The color of the interior or exterior elements of each room of the building is color-coordinated using only the color determined to be "warm".

In the color coordination of a building in this way, an expert judges the interior elements or exterior elements of the entire building or each room visually and selects the color of the element. Compared with the case of performing color coordination of a building, specialized knowledge and experience are not required, there is no individual difference in judgment, and more objective color coordination of a building can be performed.

[0021]

According to the first aspect of the present invention, a chromaticity diagram of a color system represented by two axes or three axes with graduations is zoned by a color image. Read the sample color with a colorimeter and digitize it, apply the digitized sample color on the chromaticity diagram of the color system based on the scale of each axis, and determine the image of that color,
Color image determination can be performed quantitatively, and classification can be easily performed even if there is no special knowledge or experience and the color is an intermediate color.

According to the second aspect of the present invention, a chromaticity diagram of a color system represented by two axes or three axes with scales is zoned by a color image, and a sample color is Read with a colorimeter and digitize, apply the digitized sample color on the chromaticity diagram of the color system based on the scale of each axis, judge the image of the color, and The interior elements or exterior elements of each room in the building are color-coordinated using only the colors determined to be the same image by the image judgment, so by using the colors classified into the same image to arrange the interior elements and exterior elements The color coordination of the elements can be done easily and according to the image without the need for an expert.

[Brief description of the drawings]

FIGS. 1A and 1B are explanatory diagrams showing an example of a Munsell color chart used in the present invention.

FIG. 2 is an explanatory diagram showing an example in which the above Munsell color table is divided into zones by color images.

FIG. 3 is an explanatory diagram showing another example in which the above Munsell color table is divided into zones by color images.

FIG. 4 is an explanatory diagram showing still another example in which the above Munsell color table is divided into zones by color images.

FIG. 5 is a three-dimensional diagram of hue, lightness, and saturation used in the embodiment.

FIG. 6 is an explanatory diagram of a state where a colorimeter is connected to a computer.

[Explanation of symbols]

 1 Munsell color chart 2 Computer 3 Colorimeter

Claims (2)

[Claims] 1. A chromaticity diagram of a color system represented by two axes or three axes with scales, zoned by a color image, a sample color is read by a colorimeter, and converted into a numerical value. A method of determining a color image by applying the sampled color to the chromaticity diagram of the color system based on the scale of each axis, and determining an image of the color. 2. A chromaticity diagram of a color system represented by two axes or three axes with scales is zoned by a color image, a sample color is read by a colorimeter and quantified, and the numerical value is calculated. The sampled color is applied to the chromaticity diagram of the color system based on the scale of each axis, the image of the color is determined, and only the color determined to be the same image by the image determination of the color is determined. A color coordination method for a building, characterized in that the interior elements or exterior elements of each room of the building are color-coordinated.