JPH11328393A - Image processor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To newly reproduce a image and to obtain an aesthetic image by outputting images of a red area and a blue area without any feeling of physical disorder and improving the sharpness by providing a color separating means which separates a visible area into B, G, and R and a mixing means which mixes specific color separation information with luminance information found from B, G, and R. SOLUTION: A color CCD 1 consists of a color separation part 11 which separates an input photographed image into an R, a G, and a B component through a filter and a CCD 12 which receives and converts the output of the color separation part 11 into electric signals by the components. A Lab conversion part 3 converts the color-separated image components of R, G, and B to a Lab space consisting of lightness and color expression. A mixing part 4 mixes the red(R) or blue(B) component with a luminance component made from the B, G, and R components in the Lab space. A displaying conversion part 5 reverse-converts the output of the mixing part 4 into the B, G, and R components. A display part 6 displays the output of the displaying conversion part 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image processing apparatus, and more particularly, to an image processing apparatus having improved image processing.

[0002]

2. Description of the Related Art In recent years, digital cameras using a CCD or the like as an image sensor have been developed, and digital cameras having about 300,000 to 2,000,000 pixels can be easily obtained. . Originally, CCD image sensors have spectral sensitivity in the infrared or ultraviolet region, but since only visible reproduction is usually considered, they have been cut and have not been used as effective information.

[0003]

In a conventional digital camera, information in the red and blue regions could originally be obtained independently. However, only information in the visible region was used on average, and independent digital information was obtained. It has not been used as important image information.

The present invention has been made in view of such a problem, and takes in information in a red area and a blue area,
Alternatively, the signal information on the short wavelength or long wavelength side is also captured by a transmission filter, and the output (display or print) of the information is visually similar to the color of the visible portion, so that the image in the red area or the blue area can be obtained. It is an object of the present invention to provide an image processing apparatus which can output a new image without any discomfort, improve sharpness, and obtain a new image reproduction and an aesthetic image.

[0005]

According to a first aspect of the present invention, there is provided an image processing apparatus for reading an image by using an image sensor, wherein a color for separating a visible region into B, G, and R colors is provided. It is characterized by comprising a separation means and a mixing means for mixing specific color separation information into brightness information obtained from B, G, R.

According to the structure of the present invention, it is possible to emphasize a color component (expression) without breaking a specific color (without changing an impression). Further, by mixing the information of the red region or the information of the blue region with the brightness information obtained from the visible region, it is possible to obtain an image in which the information of the distant view or the near view is added.

(2) A second aspect of the present invention for solving the above-mentioned problems is an image processing apparatus for reading an image using an image pickup device, wherein a color separation means for performing color separation of a visible region into B, G, and R; The brightness information obtained by color separation into G and R is
And mixing means for converting the information of the visible region by mixing with the information of the specific color.

According to the structure of the present invention, it is possible to convert the information in the visible region to enhance the color components without breaking the specific color. Further, by mixing the brightness information obtained from the visible region with the R, G, or B components mixed at an arbitrary ratio, it is possible to obtain an image to which information of a distant view or a near view is added.

(3) According to a third aspect of the present invention, there is provided an image processing apparatus for reading an image using an image pickup device, comprising: a color separation means for separating a visible region into B, G, and R; In the brightness information obtained by color separation into G and R,
Means for mixing the imaging information of a specific color to display a visible region.

According to the configuration of the present invention, it is possible to display an image in which the color components are emphasized without destroying a specific color. Further, by mixing the information of the red region or the information of the blue region with the brightness information obtained from the visible region, it is possible to display an image in which the information of the distant view or the near view is added.

(4) In this case, the color-separated visible region information or lightness information and chromaticity information, for example, La
It is characterized in that the image information and the mixing ratio information converted into b, Luv, HLS are stored in the storage means and output based on the setting of the mixing value.

Here, HLS is H which is three attributes of color perception.
ue (hue), Saturation (saturation), Lig
htness (brightness). According to the configuration of the present invention, it is possible to change the mixed value setting later without damaging the original image data. Further, the degree of mixing can be selected to obtain an optimal image.

[0013]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of the present invention. In the drawing, reference numeral 11 denotes a color separation unit that separates an input photographed image into R, G, and B components by a filter, and 12 denotes a CCD that receives the output of the color separation unit 11 and converts each component into an electric signal. The color CCD 1 is constituted from the above.

By the way, when the image information is separated into B, G, and R, the information separated by the respective color separation filters is different not only in color information but also in light scattering due to wavelength. have. Furthermore, if a gentle filter having transmittance on the shorter wavelength side and longer wavelength side is used instead of the steepness in which the characteristics of the respective B and R transmission filters are limited to the visible region, the red (R) component becomes red. The outside information can be included, and the blue (B) component can include ultraviolet information.

Reference numeral 3 denotes a color-separated R, G, B image component in an HLS space, Luv space, or La
This is a conversion unit for converting into the b space. In this example, it is a Lab conversion unit that converts into a Lab space. Reference numeral 4 denotes a mixing unit for mixing a red (R) component or a blue (B) component with a lightness component formed from B, G, and R components in the Lab space.
A conversion unit for display which performs an inverse conversion from the output of B to G, R components
Reference numeral 6 denotes a display unit for displaying the output of the display conversion unit 5, and 7 denotes the output of the mixing unit 4 or the output of the display conversion unit 5 for printer output Y, M, C (or Y, M, C, K). Is a printer which receives the output of the printer converter 7 and prints out. 9 is the mixing section 4
Is output to the display conversion unit 5 or the printer conversion unit 7. The operation of the system configured as described above will be described below.

In the first embodiment of the present invention, a red (R) component is reflected as a lightness component on a visible image. It is known that the red component has low light scattering and contains a lot of distant view information. Therefore, this component is used for information in the visible region. Also, distant view information can be separated.

In the color separation section 11, the color separation filters are two-dimensionally arranged as shown in FIG. 2 in order to obtain the B, G, and R components. The red component has low light scattering,
More distant information is contained than the B and G components (short wavelength light is easily scattered). Therefore, it is considered that a red component is used in consideration of the brightness component obtained from the B, G, and R components. The color components used are those obtained from the B, G, and R components.

In this manner, the R, G, and B components output from the color CCD 1 enter the subsequent Lab conversion unit 3 and
Converted to a point in ab space. The mixing unit 4 receives the output of the Lab conversion unit 3 and mixes the red component with the brightness component L converted from B, G, R. The output of the mixing unit 4 is inversely converted by the subsequent display conversion unit 5, and the original B, G, R system (B ',
G ′, R ′) is displayed on the display unit 6. Alternatively, the output of the mixing unit 4 is given to the printer conversion unit 7,
The data is converted into Y, M, C (or Y, M, C, K) and printed by the printer 8. Note that Y, M, C or Y,
The conversion into M, C, and K may be performed by converting the B ′, G ′, and R ′ data obtained by the display conversion unit 5 as shown by the broken line in FIG.

According to this embodiment, by mixing information of the red area with the brightness information obtained from the visible area, it is possible to obtain an image in which information of the distant view is added. At this time, by saving the color components in the visible region,
The color does not change. That is, the image of the red component is taken into account without deviating from human vision.

In the present invention, since the red component has small light scattering, far-field information contains more than the G and B components. Therefore, it has been considered that the color components obtained from the B, G, and R components are stored, while the red component is treated as the lightness component instead of the lightness component. By using the color components obtained from the B, G, and R components, image synthesis is performed in a form suitable for human vision. As a specific example, the mixing unit 4 performs the following arithmetic processing on the output of the Lab conversion unit 3.

[0021]

(Equation 1)

Here, the visible region and the red region are defined as {L ₁ =}
It is desirable to standardize to be _LR . The meaning of Σ is the sum of the total outputs of the CCD image pickup devices, and corresponds to matching the average brightness. The effect of the value in the red region on the brightness of the visible component is considered. According to this embodiment, the original signals B, G, and _R are converted into Lab spaces L ₁ , a, and b, and the original signal _R is converted into L _R. Thereafter, the L ₁ is a luminance component (1) parameter alpha is entered formula (1-alpha), as shown in formula L ₁ + alpha (L _R
−L ₁ ).

(L _R -L ₁ ) corresponds to an image of only a distant view obtained by subtracting an image including a middle view which is a visible region from an image including distant view information. It is a mixture of the components at the ratio of α. Here, the parameter α takes an arbitrary value between 0 and 1, when α = 0, there is no mixing, when α =＝, complete replacement of the lightness component, α = 1
Then, only the distant view is extracted because of the difference.

As described above, by making the α value adjustable between 0 and 1, the display state of the image can be changed. Further, the value of α may be automatically set in order to receive a large amount of information on the position in accordance with the state at the time of focusing (for example, a distant view to a near view), that is, to obtain a sharp image. In addition, automatic setting may be performed according to the environment (sunny, cloudy, rainy) or the brightness (day, night). Also at this time, by setting α closer to 1, more information on the distant view can be entered. That is, a sharp image can be obtained. In addition, the mixing ratio is changed according to the brightness, the color, LS, (u, v) or (a, b).
The mixing ratio can be changed according to the conditions.

According to this embodiment, by mixing the brightness information in the visible region with the information in the red region at an appropriate ratio, it is possible to obtain an image in which the information of the distant view is added or emphasized. And the color components (a, b)
Can be emphasized without changing the impression.

The conversion unit 5 for display converts the new signal obtained by the equation (1) into R, G, B information by performing an inverse conversion. FIG. 3 is a diagram showing an operation state of the present invention. The Lab signal obtained by the mixing unit 4 enters the subsequent display conversion unit 5 via the selector 9, is converted into B ′, G ′, and R ′ signals, and is displayed on the display unit 6. As a result, the display of the display unit 6 is an image in which the distant view is sharply reflected by the red component. here,
The above-described mixing ratio parameter α can be manually adjusted without being limited to the automatic setting. By storing two pieces of original image data, α can be manually adjusted at any time.
, The change in the image can be confirmed on the display unit.

According to this embodiment, by mixing the lightness information in the visible region with the imaging information in the red region, it is possible to display an image in which information on a distant view is added.

In FIG. 3, the new signal obtained by the equation (1) is converted into a Y, M, C or Y, M,
The C and K data are converted and printed by the printer 8. The print image is an image in which the distant view is sharply reflected by adding the red information. When conversion into Y, M, C, and K is performed, a masking process is performed according to the characteristics of the printer. K ′ of Y ′, M ′, C ′, and K ′ as printer image data is usually used as UCR or black addition.

In the case of outputting with a printer, a desired image can be obtained by changing the mixing ratio in the same manner as described above. As the printer 8, various types such as a printing method on photographic paper using an exposure system, an electrophotography, an ink jet, and a thermal color recording method can be used.

Next, a method of photographing an image will be described.
First, the information of the visible region and the red region,

[0031]

(Equation 2)

Alternatively, the converted HLS, Lab, Luv
Etc. For example, using L, a, b

[0033]

(Equation 3)

Is stored in the memory. When it is desired to view the stored image, the stored image data is read out and displayed on the display unit 6. In the case of the image data represented by the equation (2), the image data is configured as shown in FIG. 4 and stored in the memory 21, and the Lab conversion unit 3, the mixing unit 4 and the display unit The data is displayed on the display unit 6 via the conversion unit 5.

In the case of the image represented by the equation (3), the image data is stored as shown in FIG. 5, and the read image data is displayed on the mixing unit 4 via the compression / decompression unit 20 and the selector 22. It is displayed on the display unit 6 via the conversion unit 5. Alternatively, the output of the display conversion unit 5 is converted into Y, M, and C by the printer conversion unit 7 and printed by the printer 8.

If the operator is not satisfied with the displayed image, the operator resets the mixture value α. Thus, in addition to the method of outputting the directly determined mixture value α without damaging the original image data, the setting of the mixture value can be arbitrarily changed later.

In the case of the above image data storage method, (2)
The case where the data is stored in the form of the expression or the expression (3) has been described.
Instead of this, after the treatment is performed at the optimum mixing ratio from the expression (2) or (3),

[0038]

(Equation 4)

Or

[0040]

(Equation 5)

Can be created and stored in the storage means. In this case, the storage means is provided after the mixing unit 4. In addition, when capturing an image, several types of imaging conditions (eg, γ, MTF, color, focus position, etc.) are set in advance for one screen.
To read the image and store it in the storage means.

Next, how to use the red component will be described.

[0043]

(Equation 6)

According to the above, with respect to Lab-based image components,
As shown in equation (6), the L component of the Lab component is
_When replaced with _R , the red component can be displayed in a color in the visible region. Equation (6) is equivalent to halving α in equation (1). This means that the red world is reproduced with colors in the visible region.

Further, when separating a distant view,

[0046]

(Equation 7)

Is used. This is α in equation (1)
= 1. As a result, the lightness of the visible system is subtracted from the red component of the lightness, which means that an image of only a distant view is reproduced with a tint in the visible region.

The case where the red component is used has been described above. The case where the blue (B) component is used instead of the red component will be described. In the second embodiment of the present invention, a blue component is reflected on a visible image as an achromatic component. The blue component has low light transmission, high light scattering, and contains much foreground information. Therefore, this component is used as information in the visible region. Also, the foreground information can be separated.

In the CCD 11, a color separation filter is used to obtain B, G, and R components. As a result, the color separation unit 1
1 obtains B, G, and R components. The blue component has large light scattering, and therefore contains more information on the near view than the G and R components (light of a short wavelength is easily scattered). So B,
Consider that a blue component is taken into account instead of the lightness component obtained from the G and R components. The color components used are those obtained from the B, G, and R components.

In this way, the output of the color CCD 1 enters the Lab conversion unit 3 and is converted into a point on the Lab space. The mixing unit 4 receives the output of the Lab conversion unit 3 and outputs B,
A blue component is mixed with the lightness component L converted from G and R. The output of the mixing unit 4 is inversely converted by the subsequent display conversion unit 5 and converted to the original B, G, R system (B ′, G ′, R ′), and displayed on the display unit 6. Alternatively, the output of the mixing unit 4 is given to the printer conversion unit 7 to output Y, M, C (or Y, M, C).
M, C, K), and prints out the data using the printer 8. The Y, M, C conversion or the conversion into Y, M, C, K is performed by converting the B ′, G ′, R ′ data obtained by the display conversion unit 5 as shown by the broken line in FIG. It can also be configured.

According to this embodiment, by mixing the information of the blue region with the brightness information obtained from the visible region, it is possible to obtain an image in which the information of the foreground is added. At this time, by saving the color components in the visible region,
The color does not change. That is, the image of the blue component is taken into account without deviating from human vision.

Since the blue component has a large light scattering, the information of the foreground is contained more than the R and G components. Therefore,
It has been considered that the color components obtained from the B, G, and R components are stored, while the blue component is treated as the lightness component instead of the lightness component. As the color components, those obtained from the B, G, and R components are used, so that image synthesis is performed in a form suitable for human vision. As a specific example, the mixing unit 4 can perform the following arithmetic processing on the output of the Lab conversion unit 3.

[0053]

(Equation 8)

[0054] Here, it is desirable to standardize such that .SIGMA.L ₁ = .SIGMA.L _B and visible and blue area. Σ means C
This is the sum of the total outputs of the CD image pickup devices, and corresponds to positioning the average brightness. The effect of the value in the blue region on the brightness of the visible component is considered. According to this embodiment, an original signal B, G, a Lab space from R L _1, a, a b, is converted from an original signal B to L _B.

[0055] Then, the L ₁ is a luminance component (8) the parameter beta is entered formula (1-beta) as shown in formula L ₁ +
To change to the β (L _B -L _1). (L _B -L ₁₎ is equivalent to only image near view obtained by subtracting the image including Chukei information is visible from the image including the foreground.

This equation is obtained by mixing a blue landscape with a lightness component at a ratio of β. Here, the parameter β takes an arbitrary value between 0 and 1, and when β = 0, there is no mixing and β = 1 /
In the case of 2, the lightness component is completely replaced. In the case of β = 1, the difference is a difference, so that only the foreground is extracted.

As described above, by making the value of β adjustable between 0 and 1, the display state of the image can be changed. Further, the value of β may be automatically set in order to receive a large amount of information on the position according to the state at the time of focusing (for example, a distant view to a near view), that is, to obtain a sharp image.
In addition, automatic setting may be performed according to the environment (sunny, cloudy, rainy) or the brightness (day, night). Also at this time, by approaching β = 1, it is possible to obtain a lot of information of the foreground, that is, obtain a sharp image. . Further, the mixing ratio can be changed according to the brightness, or the mixing ratio can be changed according to the color, (LS), (u, v) or (a, b).

According to this embodiment, by mixing the brightness information in the visible region with the information in the blue region at an appropriate ratio, it is possible to obtain an image in which information of the foreground is added or emphasized. Then, the color components (a,
Since b) does not change, the expression can be emphasized without changing the impression.

The conversion unit 5 for display converts the new signal obtained by the equation (8) into R, G, B information by performing an inverse conversion. The Lab signal obtained by the mixing unit 4 enters the subsequent display conversion unit 5, is converted into B ′, G ′, and R ′ signals, and is displayed on the display unit 6. As a result, the display of the display unit 6 is an image in which the foreground is sharply reflected by the blue component. Here, the above-mentioned mixing ratio parameter β is not limited to the automatic setting, but can be manually adjusted. By storing two original image data, by manually changing β at any time, the image can be adjusted. The change can be confirmed on the display unit.

According to this embodiment, by mixing the lightness information in the visible region with the imaging information in the blue region, it is possible to display an image in which information on the foreground is added.

The new signal obtained by the equation (8) is converted into Y, M, C or Y, M, C, K by the conversion unit for printer 7 and printed by the printer 8. The print image is an image in which the foreground is sharply reflected by adding the ultraviolet information. When converting to Y, M, C, K,
Masking processing is performed according to the characteristics of the printer.
K ′ among Y ′, M ′, C ′, and K ′ is usually used as UCR or black ink.

In the case of outputting with a printer, a desired image can be obtained by changing the mixing ratio in the same manner as described above. As the printer 8, various types such as a printing method on photographic paper using an exposure system, an electrophotography, an ink jet, and a thermal color recording method can be used.

Next, a method of photographing an image will be described.
First, the information of the visible region and the blue region,

[0064]

(Equation 9)

Or converted HLS, Lab, L
uv and the like. For example, when using Lab,

[0066]

(Equation 10)

Is stored in the memory. When it is desired to view the stored image, the stored image data is read out and displayed on the display unit 6. In the case of the image data represented by the formula (9), the configuration is as shown in FIG. 4 as a block diagram, the image data is stored in the memory 21, and the read image data is converted into the Lab 3, the display unit 6 via the mixing unit 4 and the display conversion unit 5.
In the case of the image shown in Expression (10), the configuration shown in FIG.
The read image data is stored in the memory 21 and displayed on the display unit 6 via the compression / decompression unit 20 and the selector 22, via the mixing unit 4 and the display conversion unit 5. Alternatively, the output of the display conversion unit 5 is converted into Y, M, and C and printed by the printer 8.

If the operator is not satisfied with the displayed image, the operator resets the mixture value β. Thereby, in addition to the method of outputting with the directly determined mixture value β without damaging the original image data, it is possible to arbitrarily change the mixture value setting later.

In the above embodiment, the case where the red region component is used and the case where the blue region component is used have been described as examples. However, the present invention is not limited to this, and the red region component and the blue region component are used. Can be combined, the difference can be used, or a small amount of green (G) component can be added to the R and B components.

FIG. 6 is a diagram showing the relationship between the distance and the amount of information in each light component. The horizontal axis is distance, the vertical axis is information amount, f1
Is B light, f2 is G light, and f3 is R light. According to this characteristic, it can be seen that the B light has only short-range information, the G light has information up to the middle view, and the R light includes a near view, a middle view, and a distant view component.

Therefore, by combining the B area and the R area, information from a near view to a distant view can be selected, and variable imaging and display can be performed. Moreover, by utilizing the difference of the B and R, distant view can be extracted from the L _R -L ₁ or L _R -L _G with L _G or the average of the L ₁ of the G light, L ₁ -
Middle distance can be extracted from L _B or L _G -L _B. L _B is a close view.

As a method for extracting the middle view and the distant view, a method of performing processing once to separate the image into a near view, a middle view, and a distant view, and a method of processing the information input from the filter, that is, There is a method of processing using the equations (1) and (2). FIG. 7 is a conceptual diagram of the image processing. The figure shows
A state in which a state ranging from a near view to a distant view is selected in a mixing manner based on image data divided into a near view and a distant view is shown.

For example, in the case of the distant view mode, R and B,
L obtained from G and R₁To L_R-L ₁Or request from G
L_GTo L_R-L_GAnd use
L obtained from B, G, R₁And L obtained from B_BOr
L₁-L_BOr L obtained from G_GTo L_G-L_B
And in the case of the foreground mode, L of B_BUse

By using the difference or the sum of the components, the near view to the distant view can be mixed or the difference can be extracted. By using the chromaticities (a, b), (LS), and (u, v) in the visible region with respect to the changes in L and H (brightness) obtained in this manner, there is no visual shift. Images can be obtained.

Next, an improvement for visually matching the chromaticity will be described. By mixing color separation information or color information of a specific color with L in the visible region, and adding or subtracting,

[0076]

[Equation 11]

The L component changes to the L ′ component as shown in FIG.
In some cases, the color reproduction range is exceeded. FIG. 8 is an explanatory diagram in the case of exceeding the color reproduction range. The case where L ′ in the figure exceeds the color reproduction range with respect to the input point A is shown. Also, if the change is large even if it does not exceed, the color is shifted from the color in the visible region.

In such a case, as one method, L ′ is preferably set to L ″ within the color reproduction range so as not to deviate from the color. That is, by setting (L ″, a, b), it is possible to stop within the color reproduction range.

However, in this method, even if the color component is kept within the color reproduction range, there may be a sense of incongruity due to the relationship with other colors, and it is more preferable to smoothly change the lightness component L.

FIG. 9 shows an improved version of this, in which the color is also changed according to the lightness component. La shown in the figure
In the b-space, r corresponding to chroma is changed together with lightness L without changing chromaticity θ corresponding to hue. It is preferable to use the change curve obtained from the brightness when the exposure amount changes because no uncomfortable feeling is generated.

In the HLS space, this is equivalent to correcting the lightness component and the saturation component (S) in conjunction with each other without changing the hue H corresponding to the hue. As shown in FIG.
Without changing the hue (θ), along the expected curve that would change if the lightness of the visible image changes, the lightness L ′ is linked with the saturation (r) to make the color reproduction area follow a similar curve. To change. This achieves a natural color change.

[0082]

As described in detail above, (1) According to the first invention, in an image processing apparatus for reading an image using an image sensor, the visible region is separated into B, G, and R colors. Color separation means and specific color separation information for B, G,
By providing a mixing means for mixing the lightness information obtained from R with the lightness information, the color components (expression) can be emphasized without disturbing the specific color (without changing the impression). Also,
By mixing the information of the red region or the information of the blue region with the brightness information obtained from the visible region, it is possible to obtain an image in which the information of the distant view or the near view is added.

(2) According to the second invention, in an image processing apparatus for reading an image using an image sensor, a color separating means for separating a visible region into B, G, and R, Mixing means for converting the information of the visible region by mixing the brightness information obtained by color separation with the information of the specific color and converting the information of the visible region without disturbing the specific tint Color components can be emphasized. Further, by mixing the brightness information obtained from the visible region with the R, G, or B components mixed at an arbitrary ratio, it is possible to obtain an image in which information of a distant view or a near view is added.

(3) According to the third invention, in an image processing apparatus for reading an image using an image sensor, a color separating means for separating a visible region into B, G, and R, and a color separating means for B, G, and R Means for displaying the visible region by mixing imaging information of a specific color with the brightness information obtained by color separation, thereby emphasizing an image in which the color components are emphasized without disturbing the specific color. Can be displayed. Further, it is possible to display an image in which information of a distant view or a near view is added by mixing information of a red area or information of a blue area with the brightness information obtained from the visible area.

(4) In this case, the color-separated visible region information or lightness information and chromaticity information, for example, La
The image information and the mixture ratio information converted into b, Luv, and HLS are stored in the storage unit, and output based on the mixture value setting, thereby changing the mixture value setting later without damaging the original image data. Can be performed. Further, the degree of mixing can be selected to obtain an optimal image.

As described above, according to the present invention, the information of the red area and the blue area is fetched, and the output (display or print) of the information is visually similar to the tint of the visible portion. It is possible to provide an image processing apparatus capable of outputting an image in an area or a blue area without a sense of incongruity, improving sharpness, and obtaining a new image reproduction or an aesthetic image.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a diagram showing an example of an arrangement of a filter according to the present invention.

FIG. 3 is a diagram showing an operation state of the present invention.

FIG. 4 is a diagram showing a main part of an embodiment of the present invention.

FIG. 5 is a diagram showing a main part of another embodiment of the present invention.

FIG. 6 is a diagram illustrating a relationship between a distance and an information amount in each light component.

FIG. 7 is a conceptual diagram of image processing.

FIG. 8 is an explanatory diagram in a case where a color reproduction range is exceeded.

FIG. 9 is an explanatory diagram that does not exceed the color reproduction range.

[Explanation of symbols]

 Reference Signs List 1 color CCD 3 Lab conversion unit 4 mixing unit 5 display conversion unit 6 display unit 7 conversion unit for printer 8 printer 9 selector 11 color separation unit 12 CCD (imaging element)

Claims (4)

[Claims] 1. An image processing apparatus for reading an image using an image sensor, wherein color separation means for separating a visible region into B, G, and R, and specific color separation information obtained from B, G, and R. An image processing apparatus comprising: a mixing unit configured to mix lightness information. 2. An image processing apparatus for reading an image using an image sensor, comprising: color separation means for separating the visible region into B, G, and R; and brightness information obtained by color separation into B, G, and R An image processing apparatus comprising: mixing means for converting information of a visible region by mixing the information with information of a specific color. 3. An image processing apparatus for reading an image using an image sensor, comprising: color separation means for separating the visible region into B, G, and R; and brightness information obtained by color separation into B, G, and R Means for mixing the imaging information of a specific color to display a visible region. 4. The storage device stores the color-separated visible region information or the brightness information, the image information converted into chromaticity information, and the mixing ratio information, and outputs the information based on the setting of the mixing value. The image processing apparatus according to claim 1, wherein