TWI361010B - Color correction method and color correcting integ - Google Patents

Description

1361010

r I

TW4536PA IX. Description of the Invention: [Technical Field] The present invention relates to a color correction method and an integrated wafer having a color correction function, and more particularly to a color correction applicable to a display or a projector Method and integrated wafer with color correction function. [Prior Art] • At present, various display technologies have matured, especially devices such as monitors or projectors have been widely used in the market. How to more faithfully present image color is one of the development priorities of many manufacturers. However, due to the nature of the device, the same images are not necessarily identical on different devices. In the case of a display, conventionally, when the display receives image data, the grayscale signal of the image data is directly stored in a random-access memory (RAM) of the display, and is based on Gamma (Gamma). The voltage corresponds to the corresponding voltage output. Since this method does not take into account whether the received image signal is the same as the color gamut of the display, the displayed image is deviated. For example, if an image is an image generated according to the sRGB standard color gamut definition, the grayscale data of each pixel is such that the X, Y, and Z stimulus values received by the human eye are in the sRGB color gamut. One point, but because the color gamut of the display itself or the three vertices of pure red, pure green and pure blue are not the same as the sRGB color gamut, when the image data is directly input to the display, the human eye will receive a different X, Y, Z stimulus value, thus producing the front ^ΟΙϋΙΟ

TW4536PA describes the image deviation problem. SUMMARY OF THE INVENTION The present invention relates to a color correction method and an integrated wafer having a color correction function, which adjusts image bedding according to the characteristics of a device to be calibrated, so that the image data can be faithfully perceived after adjustment. The effect of the original image. The invention provides a color correction method, which comprises the steps of: converting a three-primary gray scale value of a shadow and a data into a feature value of a color space; defining a coordinate position of the white light according to the color space defined by the color space and defining the feature value in the space The relationship between the coordinate positions and the three primary color grayscale values to the one feature value to generate an adjusted feature value; the three feature values of the device to be corrected to display the three primary colors respectively; according to the device to be corrected 5 eifa two eigenvalues and a color space transformation formula, converting the adjusted eigenvalues into two primary color adjusted brightness values; and measuring the gamma characteristic curve of the to-be-corrected device in each of the distinct primary colors, And measuring the measured three primary colors, the Gamma characteristic curve, to generate a new gray ρ self-duplicity relationship of the three primary colors, thereby obtaining the adjusted gray primary value of the three primary colors after the adjustment of the three primary colors. It should be + praised to propose an integrated complex with color correction function:: storage unit, - temporary storage unit and - color correction unit. _ 2: The amount of the correcting device to be displayed in the three primary colors:: Use the device to be inserted into the display device to display the original three originals 7 1361010 1. *

The gamma characteristic curve measured by the TW4536PA color. The color correction unit is configured to receive an image data, and obtain the converted feature value data of the image data according to the image format of the image data, thereby converting the three primary colors of the image data into a color space. value. The color correction unit is further configured to adjust the feature value according to the relationship between the coordinate position of the standard white light and the coordinate position defined by the feature value in the color space and the gray level value of the three primary colors to generate an adjusted feature value. The color correction unit is further configured to convert the adjusted feature value into the three primary color adjusted brightness values according to the three feature values measured by the to-be-corrected device when displaying the three primary colors respectively and a color space conversion formula. The color correction unit models each of the measured gamma characteristic curves of the three primary colors of the device to be corrected to generate a new gray-scale relationship of the three primary colors, thereby obtaining the brightness values corresponding to the three primary colors. The three primary colors are adjusted after the grayscale value. In order to make the above-mentioned contents of the present invention more comprehensible, the following detailed description of the preferred embodiments and the accompanying drawings will be described in detail as follows: * [Embodiment] For the first embodiment, please refer to FIG. A flowchart of a color correction method according to Embodiment 1 of the present invention. This color correction method includes steps S11 to S15. Starting from step S11, the grayscale values of the three primary colors (red, green, and blue) of an image data are first converted into the feature values of a color space. Then, as shown in step S12, the relationship between the coordinate position of the standard white light defined by the color space and the coordinate position defined by the feature value in the color space and the three primary colors 8 1361010

TW4536PA

The grayscale value is used to adjust the feature value to produce an adjusted feature value. Then, referring to step S13, the three feature values of the device to be corrected for displaying the three primary colors are respectively measured. Next, as shown in step S14, the adjusted feature values are converted into the three primary color adjusted luminance values according to the three characteristic values of the to-be-corrected device and a color space conversion formula. Then, as shown in step S15, the gamma characteristic curve of the device to be corrected in displaying the three primary colors is measured, and the measured gamma characteristic curves of the three primary colors are modeled to generate the respective two primary colors. The new gray-scale relationship is used to obtain the adjusted grayscale values of the three primary colors corresponding to the adjusted values of the three primary colors. The device to be corrected is for example a display. Herein, the embodiment also provides an integrated wafer with a color correction function, which can be a stand-alone wafer design, for example, a special application integrated circuit (ASIC). Color correction is performed directly on the display wafer mounted on the display. Integrated chip with color correction function ^ Refer to Figure 2A for the circuit block diagram, display chip 2: Please refer to Figure 2B for the plan. As shown in Fig. 2A, the whole circuit = ϋ 一启;. The Japanese film 10 packs m 〇, a temporary storage unit 120, and a color storage π 110 stores a plurality of different value data. The temporary storage unit 12 〇 is measured by the __ input interface feature correction when the three primary colors are displayed separately = written to be (four) "material correction device at each display three n values" and the horse characteristic curve. Color correction Single Magic 3 () by the I measured by the I::: material, and according to the image format of the image data:: Wide Receive - to take the conversion feature value data of the image data, thereby using =; = 9 1361010

The TW4536PA dichromatic gray scale value is converted into a eigenvalue of a color space. The color correction unit is used to adjust the feature value according to the relationship between the coordinate position of the standard white light according to one of the color space definitions and the coordinate position defined by the color value, and the two color and the step value to generate an adjusted value. Eigenvalues. The color is positive, and the 7L 13〇 is used to convert the ^ feature value into the three primary colors adjusted m color correction according to the three feature values and a color space conversion formula of the device to be corrected. Chu, 'M produces the new gray scales of the three primary colors - the brightness relationship is transferred to obtain 拎 _ 広 quot # # # # # Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ Λ As shown, the display wafer 20 is provided with an integrated storage unit 11A, a temporary storage unit 12A, and a color correction chip. In addition to the te0, the scan driving unit 210, a data driving unit 220, and the like Accessing a random-access memory (RAM) 230, a Gamma voltage source 240, a timing generating unit 250, and a TG circuit 260. The color correcting unit 13 去 goes to the sea according to the characteristics of the display The image data of the shirt will be stored in the display wafer 2 random access = 疋 230 tb thousand ' and then the color corrected image will be displayed with the above components. The details of the steps of the color correction method of the embodiment will be described in detail with reference to the accompanying drawings. This embodiment is The input image data is defined by the SRGB standard. The beaker is used as an example. This image data is converted to CIE XYZ colorbook $ between the two eigenvalues (χ, γ, Ζ) in the CIEXYZ color space. Stimulus value, which is also the gray color value of the three primary colors of the image data, person, ruler, G· 1361010

TW4536PA B) Displayed on the sRGb standard screen, the signal seen by the human eye. In step S11, when the three primary color grayscale values (r, g, B) of the image data are converted into the characteristic values (X, γ, Ζ) of the CIEXYZ color space, the three primary color grayscale values (R, G, Β must be first). Converting to the original color values of the three primary colors (dR, dG, dB) 'and then converting the original primary brightness values (dR, dG, dB) into the feature values (X, Y, Z). The color correction unit 130 is in accordance with the following formula Convert the three primary color grayscale values (R, G, Β) into the original primary luminance values (dR, dG, dB):

dR

dG

dB when

R

Max

彡 0.03928, dR ^R/Max grey + 0.055 , 2.4

V when

1.055 G (1)

Max _ gr ’G/Max_grey +0.055 when

1.055 B

Max _ grey R/Max — 12.92 If no, then (4) 3928, 1 inverse ^^, if not, then k2.4 (2) 12^92~ ‘if no’

VB/Max grey+ 0.055 Γ055 , 2.4 (3) In the above equations (1) to (3), Max-grey is the maximum gray-scale value that can be displayed by the device to be calibrated, taking an 8-bit device as an example. Its maximum grayscale value is 255. In FIG. 2A, when the input image format is determined to be an image format defined by the standard, the color correction unit 13 can obtain each parameter in the above formula from the binary binary no, such as 〇〇3928, 2 4, 12 = 1361010

TW4536PA, etc., to calculate the original luminance values (dR, dG, dB) of the three primary colors. Then, the original primary luminance values (dR, dG, dB) of the three primary colors are converted into the characteristic values (X, Y, Z) of the CIEXYZ color space according to the following formula (4):

"X' '0.4124 0.3576 0.1805"'dR" Y 0.2126 0.7152 0.0722 dG Z 0.0193 0.1192 0.9505 dB The eigenvalue corresponding to the gray value (R, G, B) of the three primary colors is obtained by the above matrix calculation (X, After Y, Z), as shown in step S12, an adjusted feature value (X', Υ ', Ζ ') is generated by adjusting the feature value (X, Υ, Ζ). The purpose of this step is to increase the color saturation of the image to improve the vividness of the image displayed on the display. In step S12, the color correction unit 130 first determines a color brightening direction according to the coordinate position of the standard white light and the feature value (Χ, Υ, Ζ) at the coordinate position defined by the color space. Next, a color enhancement coefficient k is determined according to the difference between the maximum value and the minimum value of the three primary color gray scale values (R, G, B). Then, according to the coordinate position of the standard white light, the characteristic value (X, Y, Z) * the coordinate position defined by the color space, the color brightening direction, and the color brightening coefficient k to convert the feature value (X, Y, Z) into Adjusted feature values (X', Y', Z'). The following figures illustrate. Please refer to Figure 3, which shows the adjustment of image data on the CIE1931 chromaticity diagram. In Figure 3, the coordinates of the standard white light are (xs, ys), and the coordinates of the eigenvalues (X, Y, Z) defined in the CIEXYZ color space are (xin, yin), and the coordinates after the assumed color increase are ( X', y'). The coordinates (xin, yin) are obtained according to the following equations (5) and (6): 12 (5) 1361010

TW4536PA

. X χιη =-

X + Y + Z (6)

Y yin =-

X + Y + Z In order to increase the color in the correct direction, that is, from (XS, ys) to (xin, yin), you need to add two sets of conditions: When xin> XS, Bay 1J X 'XS, if no, Bay|J X'<XS (7) When yin>ys, then y'"ys, if not, then y'<ys (8)

The straight line equation through the coordinates (xs, ys) and (xin, yin) is: (9) y'-ys _ yin - ys x'-xs xin - xs In addition, let (xs, ys ) and (x', y ') The two-point distance is k times the distance between (xs, ys) and (xin, yin) (ie, the color enhancement coefficient): 7(x'-xs)2 + (y'-ys)2 = kx - xs)2 + (yin - ys)2 (10) 'where the color enhancement coefficient k is determined according to the difference between the maximum value and the minimum value of φ 孓 in the three primary color gray scale values (R, G, B). The difference can actually be regarded as the color purity value of an image element. When the difference is larger, the color purity value representing the image element is larger, and the image is more inclined to be a certain color when presenting. At this time, a relatively small degree of color enhancement can be performed, that is, a smaller one is adopted. The k value. On the other hand, the smaller the difference, the smaller the color purity value representing the image pixel, so a larger degree of color enhancement can be made, taking a larger k value. Preferably, the calculated difference value (or color purity value) can be divided into multiple levels, each level is distinguished by a threshold value, and corresponds to a color brightening coefficient k, which is illustrated by taking Table 1 as an example: 13 13610101 . TW4536PA Table 1 Threshold Color Brightness Coefficient k Threshold Color Brightness Coefficient k 150 1 72 1.325 144 1.025 66 1.35 138 1.05 60 1.375 132 1.075 54 1.4 126 1.1 48 1.425 120 1.125 42 1.45 114 1.15 36 1.475 108 1.175 30 1.5 102. 1.2 24 1.525 96 1.225 18 1.55 90 1.25 12 1.575 84 1.275 Remaining thresholds 1.6 78 1.3 • For example, if the grayscale value of an image pixel is (200, 20, 20), the maximum grayscale value The difference from the minimum grayscale value is 180, which is greater than the threshold value of 150. The color enhancement coefficient k obtained by Table 1 is 1, so the image pixel can be processed without color enhancement. If the grayscale value of another image pixel is (15〇, 14〇, 145) 'the difference between the maximum grayscale value and the minimum grayscale value is 1〇, as shown in Table 1, the color enhancement coefficient k is 16, This image pixel thus has a greater degree of color enhancement. After the color enhancement coefficient k is determined, it can be substituted into the equation (10). Then, by combining the above equations (7) to (1〇), the coordinates (X', y,) after color enhancement can be obtained, and the adjusted feature values (χ, γ, and respectively) For: 1361010 * i

TW4536PA X,=x,x(Y/y,), Y,=Y, Z,=(l-x,-y,)x(Y/y,) (11)

In order to prove that the color correction method of the embodiment can effectively improve the color saturation of the image, six test points are input, and the gray scale values are (192, 80, 80), (192, 192, 80), ( 96, 192, 96), (96, 192, 192), (128, 128, 192) and (192, 128, 192). For the test results, please refer to Figure 4. In Fig. 4, the points Pr, Pg, Pb, and Pw are respectively sRGB • CIE 1931 coordinate positions of red, green, blue, and white defined by the standard, PI to P6 are the six test points input, and ΡΓ to P6' is P1 to P6 are coordinate points processed by the color enhancement step. As can be seen from Figure 4, the coordinates of the six test points can be moved to a position with a higher color saturation. Then, proceeding to step S13, measuring three characteristic values (Xr, Yr, Zr), (Xg, Yg, Zg), (Xb, Yb, Zb) of the device to be corrected in displaying the three primary colors respectively, wherein (Xr , Yr, Zr) is the characteristic value measured by the colorimeter when the device to be calibrated is displayed in pure red, and (Xg, Yg, Zg) is the characteristic value measured when the device to be corrected is displayed in pure green. (Xb, Yb, Zb) is the characteristic value measured when the device to be corrected displays pure blue. The characteristic values are transmitted to the temporary storage unit 120 by the input interface 140 (see FIG. 2A) after the measurement. And temporarily stored in the temporary storage unit 120, preferably, the temporary storage unit 120 has nine temporary registers for storing values of Xr, Xg, Xb, Yr, Yg, Yb, Zr, Zg and Zb. The relationship between the adjusted eigenvalues (X', Υ', Z') and the luminance values (dR, dG', dB') after the adjustment of the three primary colors can be obtained by the addition of light. 15 1361010

TW4536PA This embodiment is described as a display to be corrected, but can also be applied to color correction of a projector. For example, this step can measure the characteristic values of the red, green, and blue colors projected on the screen by the projector, and then adjust according to the characteristics of the projector, so that the image projected by the projector has Correction and color enhancement effects. In the next step S14, since the three characteristic values (Xr, Yr, Zr), (Xg, Yg, Zg), (Xb, Yb, Zb) of the device to be corrected are known, according to a color space conversion formula, The color correction unit 130 can convert the adjusted feature value (X, Y, Z,) into the three primary color adjusted brightness values (dR,, dG,, dB'). This color space transformation is: dR'" 'Xr Xg Xb— -1 _xr dG, two Yr Yg Yb Y' dB, Zr Zg Zb Z' can be extracted by the matrix operation of equation (12) Adjusted brightness value (dR', dG', dB'). Then, the three primary color adjusted luminance values (dR, dG, dB') are converted into the three primary color adjusted grayscale values (R, G, B') as shown in step S15. In step S15, the gamma characteristic curve of the three primary colors to be corrected is first measured, and the measured gamma characteristic curves of the three primary colors are modeled to generate new ones of the three primary colors. The gray-scale relationship is obtained, and the adjusted grayscale values of the three primary colors corresponding to the luminance values after the adjustment of the three primary colors are obtained. Taking red as an example, please refer to FIG. 5, which shows the relationship between the gray scale and the brightness measured by the device to be corrected when the red color is displayed, wherein the horizontal axis R′ is a gray scale value (the range is 0). To 1), the vertical axis dR' is a luminance value. '1361010 « t

In Figure 5, for example, TW4536PA takes 17 measurement points and models the red • Gamma characteristic curve formed by the 17 measurement points by Boltzmann function to generate new Grayscale - brightness relationship. The green and blue Gamma characteristic curves can also be modeled in this way. The formula for modeling the Gamma characteristic curve by the Boltzmann function is expressed as follows: dR,: a "2, γ '+ ^2, r (13) 1 + e(R'-x〇, r )/χ 丨, r dG': _ Alg-A2g + A2,g (14) _ J + e(G'-x〇,g)/xi.g dB, _ A 1>b - A 2,b + A 2,b ( 15) ~ γ + e(B'-xo,b)^ib The coefficients A!, A2, x〇 and Xl in equations (13) to (15) are all using the Bozman function to the Gamma characteristic curve model. The coefficient obtained when the voltage is obtained. Therefore, the relationship between the gray value R' and the brightness value dR' can be obtained after the signal of a certain gray level value R is input, and the corrected signal value R'. Similarly, the same The method obtains the corrected signal values G', B' of the grayscale values G, B. • Traditionally, when a display chip receives the grayscale value (R, G, B) signal of the image data, it directly signals the signal. The RAM stored in the chip corresponds to the corresponding voltage output according to the Gamma voltage source, and the voltage is the voltage for driving each pixel, but this method does not take into account the received (R, G, B) signal and display. Whether the color gamut is the same. For example, if (R, G, B) is based on the sRGB standard The color gamut defines the image produced. The grayscale data of each R, G, and B pixels is that the X, Y, and Z stimulus values received by the human eye are at a certain point in the sRGB color gamut, but due to the display itself. The color gamut size or the solid color R, G, B three vertices are not the same as sRGB, 17 1361010

TW4536PA So when the (R, G, B) signal is directly input to the display, the human eye will receive different X, Y, Z stimulus values. Therefore, in the color correction method and the integrated wafer 10 having the color correction function, the color correction unit 130 first converts the grayscale value (R, G, B) signals of the received image data into (X, Y, Z) signal, according to the characteristics of the device to be calibrated (such as a display or a projector) to convert and adjust the color saturation to obtain the corrected grayscale value (R', G', The B') signal is stored in the RAM 230 of the display chip 20 and then displayed, and the desired (Χ, Υ, Ζ) signal can be obtained, and the image deviation problem can also be solved. Although the embodiment converts the image data defined by the sRGB standard into the CIE XYZ color space for illustration, in practice, the image data defined by the Adobe RGB standard or the image data defined by other standards may be input and converted to CIE. In the XYZ color space, follow the above steps to adjust the image color. Embodiment 2 Please refer to FIG. 6, which is a flow chart of a color correction method according to Embodiment 2 of the present invention. The color correction method of the second embodiment is for setting a device to be corrected, which is, for example, a Gamma characteristic curve of a display, and includes steps S61 to S67. In step S61, the initial gamma characteristic curves of the three primary colors are set in the device to be corrected according to the characteristics of the device to be corrected and a target gamma value. Please refer to Figures 7A to 7C, which respectively show the gray-to-voltage (G-V) of the red, green and blue before and after correction of the device to be calibrated. 1361010 » »

A graph of the TW4536PA. According to the characteristics of the device to be calibrated and the expected gamma characteristic curve (the gamma value of the general target is 2.2), the red, green, and blue GV curves are the target curves of red, green, and blue, respectively. The device to be calibrated is displayed in accordance with these target curves. Next, as shown in step S62, the three feature values of the three primary colors displayed by the device to be corrected are measured, such as the characteristic values (Xr, Yr, Zr) measured when the red color is displayed, and the measurement is performed when the green color is displayed. (Xg, Yg, Zg), measured when blue is displayed (Xb, Yb, Zb). This step is the same as step S13 of the first embodiment, and details are not described herein again. Then, as shown in step S63, the three primary color (red, green, blue) grayscale values (R, G, B) of the image data for adjustment are converted into feature values of a color space, such as the feature values of the CIEXYZ color space. (X, Y, Z). Then, as shown in step S64, the coordinate position of the standard white light defined by the color space and the relationship between the feature value (Χ, Υ, Ζ) at the coordinate position defined by the color space and the gray level values of the three primary colors (R, G, Β) Adjust the feature value (X, Υ, Ζ) to produce an adjusted feature value (X', Υ ', Ζ '). Step S64 is mainly used to adjust the color saturation of the image, and steps S63 and S64 are the same as steps S11 and S12 of the first embodiment, and are not described herein again. Then, as shown in step S65, according to the three characteristic values (Xr, Yr, Zr), (Xg, Yg, Zg), (Xb, Yb, Zb) of the device to be corrected, and a color space conversion formula, as implemented In the formula (12) in the first example, the adjusted feature value (X', Y', Z') is converted into the three primary color adjusted brightness values (dR', dG', dB'). Next, as shown in step S66, the gamma characteristic curve of the device to be calibrated in displaying the three primary colors is measured, and the measured three primary colors are respectively 1361010.

The TW4536PA gamma characteristic curve is modeled to produce a new gray-light relationship for each of the three primary colors. The steps S65 and S66 are the same as the steps S14 and S15 of the first embodiment, and are not described herein again. After the new gray-scale relationship of the three primary colors is generated, the G-V curves of the respective color corrections of red, green and blue can be known, as shown in Figures 7A to 7C. Taking the 7C picture as an example, the corrected blue GV curve will be pulled up to a higher gray level in the higher gray level region, and the color gamut of the device to be corrected can be corrected to the blue direction to make it closer to sRGB. The color gamut defined by ®. Next, as shown in step S67, the respective Gamma characteristics of the three primary colors of the device to be corrected are reset according to the respective gray-intensity relationship of the three primary colors. After the corrected Gamma characteristic curve is directly set in the device to be corrected, when a new image gray-scale signal (Rin, Gin, Bin) is input, the voltage generated by the new R, G, B Gamma characteristic curve is driven to display. It already has the function of color correction, so the X, Y, and Z signals that the image (Rin, Gin, Bin) actually wants to see are visible. In the above, although the present invention has been disclosed in the above preferred embodiments, it is not intended to limit the invention. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the scope of the invention is defined by the scope of the appended claims. 20 1361010

TW4536PA [Simplified Schematic Description] Fig. 1 is a flow chart showing a color correction method according to a first embodiment of the present invention. Fig. 2A is a circuit block diagram showing an integrated wafer with a color correction function of the embodiment. FIG. 2B is a circuit block diagram of the display chip of the first embodiment. Figure 3 is a schematic diagram showing the adjustment of image data on the CIE1931 chromaticity diagram. # Figure 4 shows the test results after the six test points have been processed by the color enhancement step. Figure 5 is a diagram showing the relationship between the gray scale and the brightness measured by the device to be corrected when it is displayed in red. Figure 6 is a flow chart showing a color correction method according to a second embodiment of the present invention. 7A to 7C are graphs showing the gray scale versus voltage (G-V) of the red, green and blue before and after the correction of the device to be corrected. [Main component symbol description] 10: Integrated wafer 20: Display wafer '110: Storage unit 120: Temporary memory unit 130: Color correction unit 210: Scanning driving unit 21 1361010

TW4536PA 220: data driving unit 230: random access unit 240: gamma voltage source 250: timing generating unit 260: power supply circuit 22

Claims (1)

1361010 . h TW4536PA X. Patent Application Range: 1. A color correction method, comprising: (a) converting the three primary color grayscale values (R, G, B) of an image data into characteristic values of a color space (Cx, Cy, (b) according to one of the definitions of the color space, the coordinate position of the white light and the relationship between the feature value (Cx, Cy, Cz) at the coordinate position defined by the color space and the gray level values of the three primary colors (R, G, B) to adjust the characteristic value (Cx, Cy, Cz) to generate an adjusted feature value (Cx', Cy, cz'); Lu (c) to measure a device to be corrected when displaying the three primary colors respectively Three eigenvalues (Cxr, Cyr, Czr), (Cxg, Cyg, Czg) and (Cxb, Cyb, Czb); (d) according to the three characteristic values (Cxr, Cyr, Czr) of the device to be corrected, (Cxg, Cyg, Czg) and (Cxb, Cyb, Czb) and a color space transform, converting the adjusted feature values (Cx, Cy', Cz') into three primary colors adjusted brightness values (dR', dG ', dB,); and (e) measuring the gamma characteristic of the device to be calibrated when displaying the three primary colors respectively And modeling the measured gamma characteristic curves of the three primary colors to generate a new gray-light relationship of the three primary colors to obtain the adjusted values of the three primary colors (dR, dG', dB') Corresponds to the adjusted grayscale values of the three primary colors (R', G', B,). 2. The color correction method according to claim 1, wherein the step (a) comprises: (al) converting the three primary color grayscale values (R, G, B) into three primary color original luminance values (dR, dG, dB); and 23 1361010 TW4536PA (a2) convert the original primary luminance values (dR, dG, dB) into the characteristic values (Cx, Cy, Cz). 3. The color correction method according to claim 2, wherein the image data is image data defined by the sRGB standard, the color space is a CIE XYZ color space, and the feature value (Cx, Cy, Cz) is For (X, Y, Z), in this step (al): dR when -< 0.03928 Max _ grey dR_ R/Max_grey _ 12.92 If no, then R/Max _ grey + 0.055 1.055 2.4 When G Max S0 .03928, dG ^ , if not, then dG G/Max _ grey + 0.055 , 1.055 , when ——————< 0.03928, dB = B'Max =.Fey, if not, then ® Max _ grey Inch 12.92 Right ^ dB _ [B/Max _grey + 0.055 γ4 L055 > where Max_grey is the maximum gray scale value that can be displayed by the device to be calibrated. 4. The color correction method according to claim 3, wherein in the step (a2), the original primary luminance values (dR, dG, dB) of the three primary colors are converted into the characteristic values according to the following formula (X) , Y, Z): ~x' "0.4124 0.3576 0.1805"~dR" Y — 0.2126 0.7152 0.0722 dG ο Z 0.0193 0.1192 0.9505 dB 24 1361010 TW4536PA 5. The color correction method as described in claim 1 of the patent scope, Wherein step (b) comprises: • (bl) determining a color brightening direction according to the coordinate position of the standard white light and the characteristic value (Cx, Cy, _Cz) at a coordinate position defined by the color space; (b2) Determining a color brightening coefficient according to a difference between a maximum value and a minimum value of the three primary color grayscale values (R, G, B); and (b3) a coordinate position of the white light according to the standard, the characteristic value (Cx, Cy , • Cz) the coordinate position defined by the color space, the color brightening direction, and the color enhancement coefficient to adjust the feature value (Cx, Cy, Cz) to the adjusted feature value (Cx,, Cy', Cz '). 6. The color correction method according to claim 5, wherein the image data is image data defined by the sRGB standard, the color space is a CIE XYZ color space, and the feature value (Cx, Cy, Cz) is For (X, Y, Z), in the step (bl), the coordinate of the standard white light (xs, ys), the characteristic value (X, Y, Z) is defined in the coordinate space of the color space (xin, yin) , ® and the coordinates (x', y') after the color increase, the coordinates (xin, yin) are obtained according to the following formula: xin yin XX + Y + ZYX + Y + Z When xin xs, then x' 2xs, if not, Bellow J x'<xs; and when yin2ys, then y's ys, if not, then y'<ys. 7. The color correction method according to claim 6, wherein in the step (b3), according to the color enhancement coefficient k, a straight line passing through the coordinates (xs, ys) 25 1361010 TW4536PA and (xin, yin) The equations y'-ys _ yin - ys — , x'-xs xin - xs and the distance between (xs, ys) and (x', y') are (xs, ys) and (xin, yin) The distance k is -^/(x'-xs)2 + (y'-ys)2 = kx ^/(xin - xs)2 + (yin - ys)2 , and the coordinates of the color enhancement can be obtained. (x', y'), and the adjusted eigenvalues (Cx,, Cy, Cz,) are each ij: • Cx, =x, x(Y/y,), Cy,=Y, Cz, =(lx,-y,)x(Y/y,). 8. The color correction method according to claim 5, wherein in the step (b2), when the difference between the maximum value and the minimum value of the three primary color grayscale values (R, G, B) is smaller, Then the color enhancement coefficient is larger. 9. The color correction method according to claim 8, wherein the difference between the maximum value and the minimum value of the three primary color grayscale values (R, G, B) has a plurality of levels corresponding to different levels. The color enhancement coefficient is different. 10. The color correction method according to claim 1, wherein in the step (d), the adjusted characteristic value (Cx', Cy', Cz') is converted into the adjusted brightness value of the three primary colors ( The color space transformation of dR', dG', dB') is: 26 1361010 TW4536PA dK Cxr Cxg Cxb -1 ~Cxr dG' — Cyr Cyg Cyb cy dB% Czr Czg Czb Cz, _ 11. The color correction method according to Item 1, wherein in the step (e), the gamma characteristic curves of the three primary colors measured by the measured quantity are modeled by a Boltzmann function, thereby To generate a new gray-light relationship of the three primary colors. 12. The color correction method according to claim 1, wherein the step (c) further comprises the step of: (f) determining the device to be calibrated according to the characteristics of the device to be calibrated and a target gamma value. The initial gamma characteristic curves of the three primary colors are set. 13. The color correction method according to claim 11, wherein after the step (e), the method further comprises: (g) resetting the device to be calibrated according to each new gray-light relationship of the three primary colors The gamma characteristic curves of the three primary colors. 14. An integrated wafer with color correction function, comprising: * a storage unit storing a plurality of converted feature value data of different image formats; a temporary storage unit for writing a device to be corrected for displaying the three primary colors respectively The three characteristic values (Cxr, Cyr, Czr), (Cxg, Cyg, Czg) and (Cxb, Cyb, Czb) measured at the time, and the amount used to write the device to be corrected to display the three primary colors respectively a gamma characteristic curve; and a color correction unit for receiving an image data, and acquiring, according to the image format of the image data, the image data conversion 27 1361010 TW4536PA eigenvalue data, thereby using the image The three primary color grayscale values (R, G, B) of the data are converted into characteristic values (Cx, Cy, Cz) of a color space, and the color correction unit is used to determine the coordinate position of the standard white light according to one of the color space definitions - and The relationship between the feature values (Cx, Cy, Cz) at the coordinate position defined by the color space and the three primary color grayscale values (R, G, B) to adjust the feature value (Cx, Cy, Cz) to generate an adjustment After special a value (Cx,, Cy', Cz,), the color correction unit is further configured to use the three characteristic values (Cxr, Cyr, Czr), (Cxg, Cyg, Czg), and (Cxb, Cyb, Czb) and one The color space conversion type converts the adjusted eigenvalues (Cx,, Cy', Cz') into three primary color adjusted brightness values (dR', dG', dB') 'the color correction unit and measures the same The gamma characteristic curves of the three primary colors of the device to be calibrated are modeled to generate a new gray-scale relationship of the three primary colors, thereby obtaining the adjusted values of the three primary colors (dR', dG', dB' Corresponding to the adjusted primary grayscale values (R, G, B,). 15. The integrated wafer of claim 14, wherein The medium color correction unit is configured to convert the three primary color grayscale values (R, G, B) into three primary color original luminance values (dR, dG, dB), and convert the original primary luminance values (dR, dG, dB) into The characteristic value (Cx, Cy, Cz). 16. The integrated wafer of claim 15 wherein the image data is image data defined by the sRGB standard, the color space being a CIE XYZ color space, the feature value (Cx, Cy, Cz) For (X, Y, Z), the color correction unit is configured to calculate the original primary brightness values (dR, dG, dB) according to the following formula: when R Max _ grey S 0.03928, dR = R/Max _ grey 12.92 If no, then 28 1361010 TW4536PA dR dG dB R/Max _ grey + 0.055 .2.4 when 1.055 G Max _ grey < 0.03928, dG = G/M: X - (d), if not, then 12.92 VG/Max _ Grey + 0.055 L055 2.4 When...B—·928, dB = _B/Max —grey Max _ grey ' B/Max — grey + 0.05 5, 12.92 No, then 2.4 1.055 y where Max_grey is the device to be calibrated The maximum grayscale value that can be displayed. 17. The integrated wafer of claim 16, wherein the color correction unit is configured to convert the original primary luminance values (dR, dG, dB) into the characteristic values (X, Y) according to the following formula: , Z): X - '0.4124 0.3576 0.1805' dR' Y - 0.2126 0.7152 0.0722 dG Z 0.0193 0.1192 0.9505 dB 18. The integrated wafer of claim 14, wherein the color correction unit is used according to the The coordinate position of the standard white light and the characteristic value (Cx, Cy, Cz) at a coordinate position defined by the color space determine a color brightening direction; the color correcting unit is used to determine the gray level value according to the three primary colors (R, G, B) The difference between the maximum value and the minimum value determines a color enhancement coefficient; the color correction unit is further configured to set the characteristic value (Cx, Cy, Cz) according to the standard white light coordinate position 29 1361010 TW4536PA The coordinate position defined by the color space, the color brightening direction, and the color enhancement coefficient are adjusted to adjust the feature value (Cx, Cy, Cz) to the adjusted feature value (Cx', Cy', Cz'). Φ 19. The integrated wafer of claim 18, wherein the image data is image data defined by the sRGB standard, the color space is a CIE XYZ color space, and the feature value (Cx, Cy, Cz) The system is (X, Y, Z), the coordinate of the standard white light (xs, ys), the characteristic value (X, Y, Ζ) is defined in the color space (xin, yin), and after the color is added The coordinate (X', y'), the color correction unit is used to find the coordinates (xin, yin) according to the following formula: xin . X . Y yin X + Y + ZX + Y + Z When xin2xs, then x' 2xs, if no, Bay, J x '<xs; and when yinSys, then ys, if not, then y'<ys. 20. The integrated wafer of claim 19, wherein the color correction unit is configured to pass a linear equation y'- based on the color enhancement coefficient k, the coordinates (xs, ys) and (xin, yin). Ys _ yin-ys — , x'-xs xin - xs and let (xs, ys ) and (x', y') be separated by two points (xs, ys ) and (xin, yin ). Times ^(x'-xs)2 + (y'-ys)2 = kx ^/(xin - xs)2 + (yin - ys)2, find the coordinates after the color enhancement (x', y' ), and the adjusted eigenvalues (Cx', Cy', Cz') are: Cx, = x, x (Y/y,), 30 1361010 TW4536PA Cy, =Y, Cz'=(lx,- y,)x(Y/y'). - 21. The integrated wafer according to claim 18, wherein the smaller the difference between the maximum value and the minimum value of the three primary color gray scale values (R, G, B), the color is brightened The larger the coefficient. 22. The integrated wafer of claim 21, wherein the difference between the maximum value and the minimum value of the three primary color gray scale values (R, G, B) has a plurality of levels, and corresponding to different levels, The color enhancement coefficient is not the same. 23. The integrated wafer of claim 14, wherein the color correction unit is configured to convert the adjusted feature values (Cx', Cy', Cz') into the adjusted values of the three primary colors (dR' , the color space transformation of dG', dB') is: dRr Cxr Cxg Cxb -1 ~ Cxr dG' - Cyr Cyg Cyb cy dB' Czr Czg Czb Czf 24. Integration as described in claim 14 a type of wafer, wherein the color correction unit models a respective gamma characteristic curve of the three primary colors measured by a Boltzmann function, thereby generating a new gray scale of the three primary colors. - Brightness relationship. 25. The integrated wafer of claim 14, wherein the color correction unit is further configured to reset the respective three primary colors of the device to be corrected according to the respective gray-light relationship of the three primary colors. Ma characteristic curve. The integrated wafer of claim 14, wherein the device to be calibrated is a display or a projector. 32