JPH10108031A - Device and method for processing image and recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To match a color displayed in a self light-emitting manner under optional environment light and the color obtained by the reflection of illumination light or the like by performing chrominance signal conversion, based on the white of a recording medium and the white of the environment light. SOLUTION: R1 G1 B1 data obtained from a scanner 301 are converted into chrominance signals X1 Y1 Z1 , independently of a device in a scanner RGB ↑XYZ conversion part 302 based on the scanner characteristic information of a scanner profile 303. In a signal conversion part 304, based on the information 309 of ambient light obtained from a sensor 310, information 312 for paper obtained from a colorimetry device 314 and monitor white information 308 obtained from a monitor profile 306, reference white is obtained and conversion to the chrominance signals X2 Y2 Z2 considered so as to make a printer matter and a display object on a monitor supply the same color appearance under observation environment is performed by using it. Based on the monitor characteristic information of the monitor profile 306, in an XYZ↑ monitor RGB conversion part 305, the X2 Y2 Z2 signals are converted into monitor device signals R2 G2 B2 .

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to matching of a color displayed in a self-luminous manner such as a CRT with a color obtained by the reflection of illumination light of a printed material or the like under an arbitrary environment light (ambient light). The present invention relates to an image processing apparatus and method, and a recording medium.

[0002]

2. Description of the Related Art In recent years, color image products have become widespread, and color images can be easily handled not only in special fields such as design creation using CG but also in general offices.
By the way, generally, when an image created on a monitor is output by a printer, the colors of the two do not match, and it is difficult to examine the color of the printed matter on the monitor. As a method for solving this, a color management system has been devised and attracted attention.

[0003] The color management system eliminates color differences between devices by using a common color space. This is because all colors are expressed in the same color space, based on the idea that if the colors are described with the same coordinates in the same color space, the appearance of those colors is the same, and the corresponding coordinates Are intended to match the appearance of the colors. At present, one of the methods generally used is CI color space.
There is a method of correcting differences between devices using an E-XYZ color space and XYZ tristimulus values, which are internal description coordinate values thereof.

An environment for observing an image will be described with reference to FIG. Here, a case where the same image 202 as the printed matter 201 is displayed on the monitor 203 is shown, and the ambient light 204 when observing the image is detected by the ambient light sensor 206 installed on the monitor or the printer. It has become.

For example, a printed image or an image displayed on a CRT is not always observed under fixed ambient light, but the ambient light 204 in FIG. 9 changes depending on environmental conditions. Furthermore, even if color matching can be achieved under a certain ambient light, if the ambient light changes, an image that has been matched up to now generally looks completely different. To avoid this, use the above color management system,
As shown in FIG. 8, when observing in a certain environment, what value (for example, XYZ value) each image will have is predicted based on ambient light information 108 obtained from the sensor 109 in advance. Profile 1 for each device
03 and 106, the colors are reproduced as faithfully as possible to match the color appearance.

This conventional example will be described with reference to FIG. First, the input image (printed matter) is read by the scanner 101, and the scanner RGB → XYZ conversion unit 102
Using the scanner profile data 103 in which scanner characteristic data stored in advance is stored, the R ₁ G ₁ B ₁ value obtained from the scanner is converted into a device-independent color signal X ₁ Y ₁ Z ₁ . Further, in the signal conversion unit, based on the ambient light information 108 obtained from the sensor 109 that senses ambient light, a color signal value X ₂ Y ₂ Z for each color when observed under the ambient light. Convert to ₂ . Then, using the monitor profile 106,
The XYZ → monitor RGB conversion unit 105 calculates R ₂ G ₂ B ₂ which is a monitor input value.

[0007]

If the same value is used in the common color space using the above-described method, the colors should look the same. However, when comparing the color displayed on the monitor with the color obtained by illuminating it like a printed matter, it is known that even if the values are the same, the observer does not see the same color. ing. Therefore, as described above, further correction is necessary in order to be able to visually observe and perceive the same color in the environment.

An object of the present invention is to match colors displayed in a self-luminous manner under arbitrary environmental light with colors obtained by reflection of illumination light or the like.

It is considered that when observing a color, a human recognizes all colors by comparing the white with the white. Consider a case where a display and a printed matter on a monitor placed under a certain ambient light (ambient light) are observed as an example.

In such an environment, there are many colors which can be considered (perceived) as white, such as white of a monitor, white of illumination light, and white of an image illuminated by illumination light (white of paper). .

When there are many colors that can be perceived as white in the surveillance environment, an observer in that environment is illuminated with the white in many of the above-mentioned environments (monitor white, illumination white, illumination light). By synthesizing the perception of the white of the image (white of the paper, etc.), the white which is used as a reference when viewing the color is obtained. At this time, the white perceived in the printed matter (white of the image illuminated with the illumination light (white of paper)) and the white of the monitor are compared with other perceived white, and the perceived overall , The degree of influence is high. Therefore, even when the illumination light is the same, when the white (chromaticity value) of the paper used for obtaining a printed matter (hard copy) is different, the reference white when viewing the color is also greatly different.

Accordingly, an object of the present invention is to realize high-precision matching by performing color signal conversion based on white of a recording medium and white of ambient light.

[0013]

To achieve the above object, the present invention is characterized by having the following arrangement.

The first invention of the present application is a method for performing color signal conversion on image data so that the color appearance of a display image and the color appearance of a formed image formed on a recording medium are the same. From the information about the image processing ambient light, information about white perceived in the formed image illuminated with the ambient light is obtained, and the obtained color information is used by using the obtained information about white and the information about white of the display device. Signal conversion is performed.

Further, the second invention of the present application is a chromatic adaptation conversion process according to environmental light such that the color of a display image obtained by self-emission and the color appearance of a formed image obtained by reflection of illumination light match. The information about the recording medium of the formed image, the information about the ambient light, the information about the display unit, and the information about the recording medium of the formed image and the information about the ambient light. Obtaining the viewing environment white information based on the above, obtaining a reference white based on the information about the viewing environment white and the display unit, and performing a color adaptation conversion process on the input image data based on the viewing environment white and the reference white. It is characterized by.

According to a third aspect of the present invention, there is provided a means for inputting information about ambient light, a means for inputting information about a recording medium, and a method for inputting information on the environment based on the information about the recording medium and the information about the environmental light. Means for obtaining information about the observation environment white illuminated with light, and image data using the information about the observation environment white so that the color appearance of the display image matches the color appearance of the formed image formed on the recording medium. Is characterized by having a color signal conversion means for performing color signal conversion for

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION

(Embodiment 1) FIG. 1 is a diagram showing a data flow of an embodiment of the present invention. FIG. 1 shows a case where a printed matter is read by a scanner and displayed on a monitor so as to appear in the same color as the printed matter.

In this embodiment, the scanner RGB →
The XYZ conversion unit 302, the signal conversion unit 304, and the XYZ → monitor RGB conversion unit 305 are executed by the CPU based on a program stored in the host computer.

An input image (printed matter) is read by a scanner 301 and converted into an image signal. The scanner RGB → XYZ converter 302 converts the R ₁ G ₁ B ₁ data obtained from the scanner 301 into a device independent X ₁ Y ₁ Z based on information of a scanner profile 303 in which scanner characteristics are stored. Convert to ₁ .

In this conversion, first, a lookup table conversion is performed for each of the RGB signals in consideration of the input gamma characteristic.

R ₁ ′ = LUT _R (R ₁ ) G ₁ ′ = LUT _G (G ₁ ) B ₁ ′ = LUT _B (B ₁ )

Next, conversion from the scanner RGB to XYZ is performed using a 3 × 3 matrix MTX _RGB2XYZ .

[0023]

[Outside 1]

The color space used here is not limited to the XYZ color space, and any color space can be used as long as it can absorb differences between devices (for example, CIELUV, CIELAB, etc.). ).

The scanner profile 303 stores data relating to the color characteristics of the scanner (such as the color conversion matrix (RGB → XYZ) and the LUT as described above).

Further, the obtained X ₁ Y ₁ Z ₁ signal is converted by the signal conversion unit 304 from the information on the ambient light obtained from the sensor 310, the information on the paper obtained from the colorimeter 314, and the monitor profile 306. Based on the obtained monitor white information 308, a reference white is determined, and signal processing is performed using the reference white. Consideration is given so that the printed matter and the display matter on the monitor give the same color appearance under this observation environment. X
It converted to ₂ Y ₂ Z _2. The conversion here uses the Von-Kries equation in consideration of chromatic adaptability.

[0027]

[Outside 2]

The matrix M is a matrix for converting the tristimulus values XYZ expressed in the CIEXYZ color system into the light receiving (cone) level response RGB of the human eye. X _w1 Y _w1 Z _w1 are tristimulus values of white (observation environment white) which are used as a reference when mainly viewing a printed matter, and are obtained from information on ambient light and information on paper. X _w Y _w Z _w is a tristimulus value of white as a reference when viewing the main monitor (reference white), information of ambient light, information and monitoring white for the paper if the paper is in its environment Gain from information.

The monitor profile 306 stores data relating to the color characteristics of the monitor (color temperature of the monitor, light emission luminance, chromaticity value of phosphor, color conversion information of a device-dependent color signal from the standard color space, etc.). .

Next, the X ₂ Y ₂ Z ₂ obtained by the signal conversion unit 304
The signal is converted from XYZ to monitor RGB based on the information of the monitor profile 306 in which the monitor characteristics are stored.
In the conversion unit 305, X ₂ Y ₂ Z independent of the device
_{The two} signals are converted into R ₂ G ₂ B ₂ which is a monitor device signal. Conversion up to this point, first, monitor from XYZ
Conversion to RGB is performed using a 3 × 3 matrix MTX _XYZ2RGB .

[0031]

[Outside 3]

Next, a look-up table conversion is performed for each of the RGB signals in consideration of the monitor output gamma characteristic.

R ₂ = LUT _R (R ₂ ') G ₂ = LUT _G (G ₂ ') B ₂ = LUT _B (B ₂ ')

Subsequently, the R ₂ G ₂ B ₂ signal is sent to the monitor,
An image corresponding to the signal is displayed on the monitor screen.

According to these procedures, under this observation environment,
The printed image can be displayed on a monitor so that the image looks the same color as the printed material.

Next, the details of the signal conversion unit 304, which is a feature of the present invention, will be described with reference to FIG.

First, ambient light information 3 is obtained from a sensor 310 installed in an input / output device such as a monitor or a printer.
09. Here, a device that outputs ambient light information as tristimulus values X _w0 Y _w0 Z _w0 was used as the sensor 310. The tristimulus values X _w0 Y _w0 Z _w0 represent the color (white) of the ambient light at that time. This device has a circuit configuration using three optical sensors having different spectral sensitivity characteristics as shown in FIG. Outputs R _so G _so B _so are obtained from the three optical sensors according to their respective spectral sensitivity characteristics. The spectral sensitivity characteristics for obtaining the tristimulus values XYZ are shown in FIG. 7, and are different from the spectral sensitivity characteristics of the sensor used in this apparatus (FIG. 6). Therefore, the tristimulus values X _w0 Y _w0 Z from the sensor main force R _so G _so B _so
Conversion to _w0 is required. In this embodiment, this conversion is 3 ×
The _measurement was performed using the matrix MTX _senser of _No. 3 according to the following equation.

[0038]

[Outside 4]

The above matrix operation was executed by a digital signal processing circuit formed in the circuit.

Next, paper information 312 is obtained from the paper characteristic measuring device 314. As a paper characteristic measuring apparatus 314, the light receiving portion takes a configuration to output the tristimulus values X _go Y _go Z _go as light information incident on the light receiving portion similar to sensor 310, tristimulus values of the light emitted X _eo Y _eo Z _eo is using the apparatus of the structure plus the known light-emitting portion. The paper characteristic measuring device having this configuration irradiates the paper with the light from the light emitting section and receives the reflected light from the paper at the light receiving section, thereby obtaining the tristimulus value ratio X _wp Y defined by the following equation as the paper characteristic. _wp Z _wp is output.

[0041]

[Outside 5]

The above calculation was performed by a signal processing circuit configured in the paper characteristic measuring device.

From the above-mentioned apparatus, the tristimulus value ratio X _wp Y _wp Z _wp is obtained as paper information, and the ambient light tristimulus values X _w0 Y _w0 Z _w0 are obtained as ambient light information. Observation environment white X
_{w1 Yw1 Zw1} was determined by the following equation.

X _w1 = X _wp · X _w0 Y _w1 = Y _wp · Y _w0 Z _w1 = Z _wp · Z _w0

On the other hand, from the monitor profile 306,
Monitor white tristimulus value 308 for displaying images, X _w2 Y
_w2 Z _w2 is obtained.

[0046] Then, using the aforementioned viewing environment color and monitor white, was determined reference white X _w Y _w Z _w from the following equation.

X _w = (1−s) · X _w1 + s · X _w2 Y _w = (1−s) · Y _w1 + s · Y _w2 Z _w = (1−s) · Z _w1 · s · Z _w2

S is a parameter indicating the effect of the monitor white and the observation environment white on the reference white.

Finally, using the reference white signal and the observation environment white calculated in this way, as described above, Von · K
The transformation was performed on the entire image by applying the ries equation.

By doing so, it is possible to consider the chromatic adaptation characteristics when observing the image displayed on the monitor.

The reference white can be obtained with high accuracy, and by converting the entire image using the reference white signal, it is possible to obtain the same appearance with sufficient accuracy on the display and the printed matter on the monitor. Become.

(Embodiment 2) As Embodiment 2, an embodiment in which a paper information storage unit 313 is provided as a part of the system as shown in FIGS. 3 and 4 will be described. In the present embodiment, paper information is obtained from the paper information storage unit. This embodiment is effective when the type of paper or the like to be used is limited to a specific type. The tristimulus values obtained by a colorimetric device outside the system are input to the paper information storage unit 313 as paper information using a media such as a floppy disk. Although a numerical value can be directly input using a keyboard or the like, the above-described method is used in this embodiment. The information of the corresponding paper is selectively taken out from the paper information storage unit 313 from the information input in advance in this way according to the paper of the printed matter that is currently being observed (attention). Used. Instructions for selection are made via instruction input means provided separately in the system. In this embodiment, a keyboard is used as the instruction input means. The method of obtaining the observation environment white from the ambient light information and the information of the paper is the same as the method of the first embodiment.

Another application example is shown below.

The data measured by using the spectrophotometer 350 and input and stored in the paper information storage unit is the spectral reflectance.
Similarly, when the spectral intensity is obtained as the ambient light information, the observation environment white is obtained as a tristimulus value in the XYZ color space by the following equation.

[0055]

[Outside 6]

In the above expression, X _w1, Y _{w1 and} Z _w1 are tristimulus values of the observation environment white to be obtained, R (λ) is the spectral intensity of ambient light, and P (λ) is the spectral reflectance of paper. Also, x
(Λ), y (λ) and z (λ) are color matching functions. Thereby, the observation environment white can be obtained with high accuracy.

Further, another application example will be described.

The characteristics of the paper are represented by a 3 × 3 characteristic matrix MTX.
determined as _p, the characteristic matrix MTX _p, inputs stored in the paper-information storage unit as the information of the paper. The characteristic matrix MTX _p of this paper gives the paper white (represented by tristimulus values X _p Y _p Z _p ) under a certain light source (represented by tristimulus values X _l Y _l Z _l ). . In this application example, the characteristic matrix MTX _{p of the} paper was obtained by the following procedure.

For a piece of paper, its tristimulus values X _p Y _p Z _p under multiple light sources are determined using a colorimeter that outputs tristimulus values, while the tristimulus values X _l Y _l Z _{l of} multiple light sources. Is obtained in the same manner, and the tristimulus value X _p Y _p Z _p of the paper under the certain light source is obtained.
And the tristimulus value X _l Y _l Z _l of the light source, assuming the following equation:

[0060]

[Outside 7]

[0061] Using the tristimulus colorimetry data of color data and paper measured tristimulus values of said plurality of light sources, performs the method of least squares was determined by determining the component of the characteristic matrix MTX _p. In this application example, the tristimulus colorimetric data of a plurality of light sources and the tristimulus colorimetric data of a paper were obtained from an actual test evaluation as described above. When the distribution is known, the above data can be obtained by performing a numerical operation using those spectral characteristics.

As a characteristic of the paper, the matrix MTX _p
, And using the tristimulus X _w0 Y _w0 Z _w0 as the ambient light information, the observation environment white X _w1 Y _w1 Z _w1 is obtained by the following equation.

[0063]

[Outside 8]

As a result, although the accuracy is slightly inferior to the above-described method in which the ambient light information and the paper information are given as spectral data, the required data amount can be reduced. Further, since the necessary ambient light data is a tristimulus value, a sensor for obtaining data relating to the ambient light can have a simple configuration.

(Embodiment 3) FIG. 5 shows a colorimeter 314 and a paper information storage 313 as part of the system.
An embodiment in which both are provided is shown. With this configuration, the paper information can be obtained directly from the colorimetric device, or the colorimetric paper information can be temporarily loaded into the paper information storage unit and used repeatedly. Can be quickly responded to paper for which no is registered, changes in paper characteristics, and the like.

(Embodiment 4) In Embodiment 4, a function of detecting an ultraviolet component is added to the sensor 310 shown in FIG. This function was obtained by preparing a sensor having sensitivity in the ultraviolet region as the fourth sensor. Then, as a result, tristimulus values X _w0 Y _w0 Z as ambient light information
_w0 (indicating the white (color) of ambient light) and UV component intensity value UV _w0
(Output value of the ultraviolet component sensing sensor). On the other hand, measurement is performed using a device such as a spectrophotometer, and a 3 × 3 characteristic matrix MTX _p (corresponding to the matrix MTX _p described in Embodiment 2) as basic information of paper and reference ultraviolet as fluorescent whitening effect information. The tristimulus value vector (X
_UV , Y _UV , Z _UV ) and an effect function F _UV (U
V), and these are input and saved in the paper information storage unit. Tristimulus value vector (X _UV ,
Y _UV , Z _UV ) are tristimulus values (X _UV ′, Y _UV ′,
Tristimulus values (X _UV ″, Y _UV ″, Z _UV ″) obtained by irradiating the paper with illumination light obtained by removing the ultraviolet component from Z _UV ′)
Was subtracted as shown in the following equation.

[0067] _{X UV = X UV '-X UV} "Y UV = Y UV' -Y UV" Z UV = Z UV '-Z UV "

And an effect function F _UV (UV) as a coefficient representing the effect of a certain ultraviolet component intensity value with respect to the reference value.
Calculates the UV component intensity value of the illumination light using the aforementioned UV component sensing sensor, and on the other hand, tristimulus values (X _UV , Y _UV , Z Z) for the aforementioned reference UV component intensity value under the illumination light.
_UV ) was determined and determined as a ratio to a reference UV component intensity value.

In this embodiment, using the above values, the observation environment white X _w1 Y _w1 Z _w1 was obtained by the following equation.

[0070]

[Outside 9]

Thus, even when the paper used contains a fluorescent whitening agent and the ambient light has an ultraviolet component, the white of the observation environment, that is, the reference white can be obtained with high accuracy. In such a case, the color matching perception could be obtained with high accuracy.

As another example, another configuration of the present embodiment will be described below. In this embodiment, the sensor 31 shown in FIG.
For 0, a spectral luminance meter having sensitivity to ultraviolet components was used. Then, using this sensor 310, a visible light spectral intensity R (λ) and an ultraviolet component intensity value UV _w0 are obtained as ambient light information. On the other hand, it is measured with a spectrophotometer or the like, and as information on paper,
The spectral reflectance P (λ) of paper excluding the fluorescent whitening component, the spectral intensity ratio P _UV (λ) of the fluorescent whitening component, and its effect function F _UV (U
V) was obtained and input and saved in the paper information storage unit. Next, using these values, the tristimulus value X of the observation environment white is calculated by the following equation.
_w1 Y _w1 Z _w1 was determined.

[0073]

[Outside 10]

By using the spectral data, it was possible to accurately determine the white of the observation environment.

As described above, by adding the above-mentioned parameters to the information of the illumination light and the information of the paper, the paper or the like used contains a fluorescent whitening agent and the ambient light has an ultraviolet component. In this case, the white of the observation environment, that is, the reference white, is also obtained with high accuracy, and even in such a case, it is possible to obtain color matching perception with high accuracy.

As can be seen from the embodiments described so far, the gist of the present invention is that when there are many colors that can be perceived as white in an observation environment, such whites are integrated to obtain a reference white. When the color signal processing is performed using the reference white and the color appearance of the printed matter on the monitor and the color appearance of the printed matter are the same, the white (paper white) perceived in the printed matter is sufficiently considered, and A means for obtaining white is provided. More specifically, information (chromaticity or ambient light) on illumination light (environmental light) is used by using information (chromaticity value or spectral reflectance, etc.) on paper for obtaining a printed matter (hard copy). Value, color temperature or spectral intensity (illuminance))
, Information (chromaticity value, XYZ tristimulus value, etc.) about white (white of paper under the illumination light) perceived in the printed matter illuminated with the illumination light (environmental light) is obtained. The object of the present invention is to determine the reference white using white of paper under light and white of a monitor.

For this reason, as a system, means for obtaining information (chromaticity value or spectral reflectance) on paper for obtaining printed matter (hard copy), storage means for storing this information, and storage means for storing this information From the information about the paper that obtains the printed matter (hard copy) obtained from the means that obtains the information about the paper or the information about the illumination light (environmental light) obtained from the illumination light (environmental light) measuring means. The object of the present invention is to add a means for obtaining information on white of the paper illuminated with light.

Accordingly, various hardware configurations and sequence processes corresponding to the various hardware configurations can be considered without departing from the gist of the present invention. These sequence processes are, for example, logicalized or softwareized, or
An algorithm is formed within a range that does not deviate from the gist of the present invention described above, and can be applied as hardware or a device according to the algorithm.

The present color signal conversion method can be used for a copying machine or a printer having a function of displaying a printed image on a monitor in advance and having a previewer function. Furthermore, the present color signal conversion method can be used in an image processing apparatus that performs color signal conversion in all cases, such as using the color signal conversion method of various input / output devices as a processing method of a color management system.

[0080]

According to the present invention, it is possible to satisfactorily match a color displayed in a self-luminous manner under an arbitrary environment with a color obtained by reflection of illumination light.

In particular, high-precision matching can be realized by performing color signal conversion based on white of a recording medium and white of ambient light.

[Brief description of the drawings]

FIG. 1 is a diagram showing a data flow according to a first embodiment.

FIG. 2 is a diagram illustrating a configuration of a signal conversion unit according to the first embodiment.

FIG. 3 is a diagram showing a data flow according to a second embodiment.

FIG. 4 is a diagram illustrating a configuration of a signal conversion unit according to a second embodiment.

FIG. 5 is a diagram showing a third embodiment.

FIG. 6 is a diagram illustrating spectral sensitivity characteristics of a sensor.

FIG. 7 is a diagram showing spectral sensitivity characteristics for obtaining tristimulus values XYZ.

FIG. 8 is a diagram showing a conventional example.

FIG. 9 is a diagram illustrating an image observation environment.

Claims (8)

[Claims] 1. A method of performing color signal conversion on image data so that a display image and a formed image formed on a recording medium have the same color appearance, comprising: information on the recording medium and image processing ambient light. The information on white perceived in the formed image illuminated with the ambient light is obtained from the information of the above, and performing the color signal conversion using the obtained information on white and the information on white of the display device. An image processing method characterized by the following. 2. An image processing method for performing a color adaptation conversion process in accordance with environmental light so that the color of a display image obtained by self-luminous light matches the appearance of a color of a formed image obtained by reflection of illumination light. The information about the recording medium of the formed image, the information about the ambient light, and the information about the display unit are input, and the observation environment white information is obtained based on the information about the recording medium of the formed image and the information about the ambient light. Determining a reference white based on the information on the viewing environment white and the display unit, and performing a color adaptation conversion process on the input image data based on the viewing environment white and the reference white. . 3. A recording medium for storing a program for realizing claim 2. 4. A means for inputting information about ambient light; a means for inputting information about a recording medium; and a means illuminated with the ambient light based on the information about the recording medium and the information about the ambient light. Means for obtaining information about the observation environment white, and using the information about the observation environment white, color signal conversion is performed on the image data so that the color appearance of the display image matches the color appearance of the formed image formed on the recording medium. An image processing apparatus comprising: a color signal conversion unit for performing color signal conversion. 5. The image processing apparatus according to claim 4, further comprising a storage unit that stores information about a plurality of recording media, as a unit that obtains information about the recording medium. 6. The information on the recording medium is 3 × 3.
6. The image processing apparatus according to claim 5, wherein the image processing apparatus is described by a matrix. 7. A means for inputting the information to a storage means for storing information on the recording medium, wherein the information is directly input from a colorimetric device, mediation input using a medium such as a floppy disk, or using a keyboard or the like. 7. The image processing apparatus according to claim 6, wherein the image processing apparatus is any one of means for directly inputting a numerical value. 8. The image processing apparatus according to claim 4, wherein the information on the ambient light includes an ultraviolet component intensity value, and the information on the recording medium includes fluorescent whitening effect information.