TW200924537A - Color image quality regulating systems and its method - Google Patents

Abstract

A color image quality regulating systems and its method are disclosed wherein the color video signal source is converted into a brightness signal and saturation signal with the amount of saturation. A signal coordinate axis rotation unit undergoes signal coordinate transformation of the saturation signal according to a hue correction parameter. The coordinate transformed saturation signal is multiplied by a saturation correction parameter with a multiplier to obtain an output saturation signal. The output saturation signal and brightness signal constitute a component saturation signal to send out from a saturation signal inverse transformation unit.

Description

200924537 IX. Description of the Invention: [Technical Field] The present invention relates to a color image processing technique, and more particularly to a color image quality adjustment system and method. [Prior Art] With the rapid development of video technology, there are more and more types of video interfaces. Mainstream analogy in the currently used color video signal specifications

Video §fl has composite video (Composite), S-video (S-video), VGA port RGB, and component signal (c〇mp〇nent). The color presented by color images is an important factor in the presentation of image information. Color has three basic properties: hue, brightness, and saturation, where Hue represents the difference between color systems. Brightness indicates the degree of lightness of a color. Saturation is the purity of a color and can also be called the chroma of a color. The color video signal includes three primary color signals of R, G, and B. When the data of the Dali color signal is transmitted, the image signal is usually processed by the encoding and decoding technology. The color difference video terminal commonly used in current audio and video design is to separate the video nickname into three different signal components (c〇nip0nent) for signal transmission. The three signals are the brightness of the color image signal (i.e., the brightness signal Y) and two of the three primary color signals, blue and red (i.e., the color signals Pb, pr). 5 200924537 [Disclosure] The technical problem to be solved by the present invention: In the prior patent technology, there is a processing to be taken. For example, in the Republic of China = Shadow 200726272, it is revealed that the color video signal of the video signal source is mainly converted into a Y-, U, V video signal by a color conversion circuit. Second and tiger formats. After that, the process of matching the one-color difference correspondence table and the saturation-two correspondence table, the inverse color-phase conversion, and the inverse color conversion to generate a color signal requires complex color space conversion hardware and the like. The patent of 671Α] is fortunate, and it can be used to convert the saturation, brightness, contrast and ^' of the image signal. In this prior patent, although it is possible to adjust the function to a fairly complete color image, it is designed on the basis of hardware, so the whole circuit is quite complicated. 4 4 Further, for example, U.S. Patent No. 20070086030, No. 1, the second of which discloses a conversion circuit and method for color image signals. In this first patent case, the entire processing circuit requires complex matrix operations, and the number of regions that can be adjusted is limited, and the global tuning mechanism for brightness, saturation, and hue cannot be integrated. • For example, in the U.S. Patent No. 6,552,751, the processing circuit for image signal is used to adjust the color of the image signal to 200924537 = degree, contrast, and color. The input image signal is first changed from the first matrix circuit to the shell and chroma signal, and then processed by a signal processing circuit. The second matrix circuit converts back to the image signal. In this prior patent =, a single processing circuit also requires complex matrix operations and conversions. For example, in the U.S. Patent No. 4,769,072, it discloses a device for adjusting image signals, which mainly rotates the coordinate axis: the adjustment of the image signal of the entrance and exit, although it has a simple (four) circuit structure, The ability to adjust the quality of the color signal can be limited, which does not meet the requirements of modern imaging equipment. According to the traditional technology analysis, different technologies still have the color space conversion, the order is complicated, the independent color and color gamut conversion cannot be achieved, the complex mathematics is required to be different, the larger (4) table memory space is needed, and additional complex circuits are needed. Integrate the entire district and independent regional adjustments and other missing. ~ The main purpose of this month is to provide a color image quality tone: the system and method 'for converting the color video signal source into a component color signal including an output of a Brahman signal and an output chroma signal. Another object of the present invention is to provide a color image quality adjustment system that can achieve independent color and color gamut conversion and a technical means for solving the problem of the present invention: The present invention is used to solve the problems of the prior art. The technical means is to use color and frequency "source dirty (4) to include - brightness (four) and color signal _ degree signal, and then the component color signal will be converted to hue and saturation to 200924537. The hue correction parameter is coordinate-converted, and then the signal is multiplied by a multiplier according to the saturation correction parameter to generate an output chroma signal. In the preferred embodiment of the present invention, the hue correction parameter and the saturation correction parameter < Ding Yucai and the positive tea number generating unit cooperate with the mapping color difference and saturation correspondence table to obtain - hue correction parameter, - saturation correction parameter. In a preferred embodiment of the present invention, a luminance conversion adjustment unit may be included to receive the chroma signal generated by the 5-color shirt signal conversion unit, and the chroma signal is subjected to the - luminance correction parameter via the adder phase. After the addition, an output = signal is generated. The brightness conversion adjustment unit may further include an image contrast adjustment unit to be used. The output brightness signal generated by the black redundancy conversion adjustment unit is adjusted, and the output brightness signal is output. The present invention compares the effects of the prior art: Compared to conventional color signal processing techniques, the present invention achieves the goal of independent color and color gamut conversion without complicated color space conversion. The present invention uses a mask area superposition to generate a new mapping correspondence table, which does not require complicated mathematical operations and saves the § memory space of the record correspondence table. With no additional circuitry, it is possible to integrate both the entire zone and independent tuning, allowing for simultaneous adjustment of brightness, saturation and hue. The specific embodiments used in the present description will be further illustrated by the following examples and accompanying drawings. [Embodiment] 200924537 Referring to Fig. 1, there is shown a system configuration diagram of a color image alpha mouth-beating system according to a first embodiment of the present invention. The color image quality adjustment system 100 of the present embodiment mainly includes a color signal conversion unit 2, a hue and saturation conversion adjustment unit 3, a chroma signal inverse conversion unit 4, and a positive chirp generation unit 5. . The hue and saturation conversion adjustment unit 3 further includes a signal coordinate axis rotation unit 31 (Axis R〇tati〇n Chcuit) and a multiplier 32. The color video signal source R, G, B of the image source 1 is first converted by the color shirt signal conversion unit 2 into a component chroma signal Y, pb, pr including a luminance signal γ and a chroma signal Pb, Pr. The chroma signal, Pr is sent to the hue and saturation conversion adjustment unit 3, so that the chroma signal outside the Pr, Pr is converted according to the hue correction parameter generated by the correction parameter generating unit 5, and is converted according to the correction parameter generating unit 5 The generated saturation correction parameter dC is multiplied by the signal in the multiplication benefit 32 to obtain the output contention signals Pbo, Pro. When the coordinate axis rotation unit 31 performs coordinate axis conversion, the color coordinate correction parameter dH generated by the correction parameter generation unit 5 and the signal coordinate conversion of the chroma signals Pb and Pr according to the following coordinate conversion formula are performed:

Pb'=(Pb*Cos(dH_e) - Pr*Sin(dH-e))

Pr'=(Pr*Cos(dH—θ)+ Pb*Sin(dH_e)) where Pb′ and Pr′ indicate that the converted chroma signals Pb and Pr represent the chroma signal dH of the original input. The hue correction parameter dH is at the corner of the PbPr coordinate plane. The chroma signal Pb, Pr passes through the signal coordinate axis rotation unit μ to perform the coordinate conversion of the above-mentioned dry change type 200924537, and then obtains the coordinate converted chroma signal pb, pr' . After the converted chroma signal Pb', pr' is sent to the multiplier 32, it is multiplied by the saturation correction parameter dC generated by the correction parameter generating unit 5, and then the output chroma signal Pbo'Pro is sent to the color. Degree signal inverse conversion unit 4. The luminance signal γ generated by the color signal conversion unit 2 is sent to the chroma signal inverse conversion unit 4 together with the output chroma signal Pbo and Pro obtained as described above, and then the converted output luminance can be converted by the chroma signal inverse conversion unit 4. The signal Y〇 and the output chroma signal Pbo, Pro are sent to the target device (the hue correction parameter dli and the saturation correction parameter not shown in pm are obtained by the k-positive generation unit 5, which is the image signal source i After the image signals R, G, and B are calculated by the hue calculation unit 51, the hue values Sh of the image signals R, G, and B are determined according to the hue value sh of the obtained color video signal sources RG and B, and according to a color difference and saturation. The hue and Chroma Mapping Look-up Table 52 is obtained to obtain the hue parental positive parameter dH and the saturation correction parameter dc. The second figure shows that the hue calculation unit 5 in FIG. 1 is calculating the image signal R, Flow chart of the color phase values of G and B. First, when the hue calculation unit obtains the image signals R, G, and b generated by the image signal source 1 (step (8)), the image signals R, G, and B are defined. Most signal ': VmaX=max(R, G, B) (step} 〇2), signal minimum value, g, b) (step 103), and the signal maximum value ν_ and the signal minimum value Vmin δ are different. The difference Δν= ν__ 乂 oil (step 1〇4). Then judge the value of v_ and Vmin (step i () 5), if the v plane is equal to Vmin, the output result of the hue value Sh = 得到 is obtained (step town 200924537 is called step, step 105 towel judgment number R:笙仇,, j into the discriminating image, whether to find Vmax (step 1 〇; if

Sh=60*(GB)MV's 浐屮έ士田' to the hue value 1 j If no 'm 隹 判别 判别 判别 判别 判别 是否 是否 是否 是否 是否 是否 进一步 进一步 进一步 进一步 进一步 进一步 进一步 进一步 进一步 进一步 进一步 进一步 进一步 进一步 进一步 进一步 进一步 进一步 进一步 进一步 ( ( ( ( ( ( The value Sh=120*(Br〇M\/ >& I, abbreviated to p, Ir., the result is output (step u〇); if not, the hue value Sh=240*iR γ, / Λλ,, (Rg)mv output result (step i. After the aforementioned steps 1〇8, 11〇, m - β 八, έ ς, θ ^, then perform the step of determining whether the hue value Sh 小于 is less than 0 ( Step, less ice U, right no § tongue, you can get the hue value of the yoke output Sh (step U3). f Η hook 'right 疋 live, then the wheel excellent phase value, to the hue value Sh + 360 After that (step 114), the hue is outputted. The figure 3 shows a system configuration diagram of the color image quality adjustment system of the second embodiment of the present invention. Some components of the embodiment are the same as the embodiment shown in FIG. Therefore, the same components are denoted by the same number for resolution. The color image quality adjustment system 本a of this embodiment mainly includes a color signal conversion unit 2, - hue a saturation conversion adjustment unit ^, a chroma nickname inverse conversion unit 4, a correction parameter generation unit &, a brightness conversion adjustment unit 6. The color video signal sources R, G, B generated by the image signal source 1 are first passed The color signal conversion unit 2 converts to include - luminance signal ¥ and chroma signal Pb, Pr component chroma signals γ, pb, pr, wherein the chroma apostrophes Pb, Pr are sent to hue and saturation conversion adjustment The unit 3a performs the coordinate conversion and the signal multiplication processing to obtain the output chroma signals pb 〇, Pr 。 The 参数 positive parameter generating unit 5a includes a hue calculation unit 51 and a 200924537, and the money, saturation correction parameter dCl After multiplying the If if the signal is multiplied by the signal, the output chroma signal Pbo, Pro is obtained. In this example, the brightness conversion signal generated by the early conversion of the color signal is converted by the brightness conversion adjustment unit γ In the place where the luminance signal is performed, the first chroma signal Pb, Pr is sent to a luminance coefficient correction unit 6

The middle correction and the luminance correction parameter dY' generated by the positive parameter generating unit 5a are multiplied. . 62 is multiplied to obtain a corrected brightness correction parameter cm. The corrected brightness correction parameter state is then added to the global brightness correction parameter dY_All addition state 63 to produce a total brightness correction parameter dY2. The global luminance correction parameter dY-AU is defined as a parameter for simultaneous adjustment of the global luminance. The luminance signal γ generated by the redundancy conversion adjusting unit 6 and the total luminance correction parameter dY2 obtained as described above are added by an adder 64, and an output shell signal Yo is sent to the chroma signal inverse conversion unit 4. Fig. 4 is a view showing the system configuration of the color image quality adjustment system of the third embodiment of the present invention. Some of the components of this embodiment are substantially the same as those of the embodiment shown in Fig. 3. Therefore, the same components are denoted by the same reference numerals for the purpose of resolution. The color image quality adjustment system 1 〇〇b of the present embodiment mainly includes a color nickname conversion unit 2, a hue and saturation conversion adjustment unit 3a, a chrominance signal conversion unit 4, and a correction. The parameter generating unit 5a and a brightness conversion adjusting unit 6. These components are substantially the same as the embodiment shown in FIG. 3, and the working principle and the connection relationship between the components are also the same, the difference being that the luminance signal γ and the total luminance correction parameter dY2 are in the temperature conversion adjustment unit 6a. After the adder 64 is added, the output luminance signal γ 产生 is generated before the transmission of the 2009 2009 537 to the chroma signal inverse conversion unit 4, and the sufficiency of the image is compared with the adjustment of the single-order output image. (four) round

To the chroma signal inverse conversion unit 4. Y〇4jA In the description of the preferred embodiment of the invention above the production bucket, the image signal source! The color video signal source R, G, B series includes the color video signal source of r, G, and β, and the chroma signal office #α古心度包# has the analog color signal Pb, Pr or digital Color difference signal Cb, Cr or U, V, I, Q -. 〆—Life: The chromatic aberration and saturation map correspondences in the consistent example of the syllabus and the data used in the chromatic aberration and saturation and brightness mapping correspondence tables in the second embodiment are mapped. As shown in Figs. 5A and 5B, the waveform diagram showing the correspondence between the hue value and the hue correction parameter is shown. The abscissa in the figure represents the hue value Sh of the input person (that is, the hue position point set by the user to be adjusted), and the ordinate coordinate system indicates the hue correction parameter dH of the output (ie, the hue intensity of the user to adjust) . In the mask area M-LUT (Mask L〇〇k_^ Table,) indicated in Fig. 5A, the number of hues corrected parameter book values [丨2, π, 9, 6, 4, 2, 1] The number and value in the mask area M-LUT can be arbitrarily set by the user. According to the intensity of the user's desire to adjust, an actual mask correspondence table can be obtained as follows:

Real_M_LUT=M_LUT* (the strength/M-max that the user wants to adjust) where M_max=max(M-LUT) is the maximum value in the mask area μ-LU. The first value in the mask area MJLUT is the maximum value, and corresponds to the user δ and the position of the § week (for example, the hue value shown in the figure 14 200924537

Sh=60), this position is the mapping axis 'maps the other half of the mask corresponding table (M-LUT) and then 'generates|symmetric actual mask correspondence table (Rea丨-M-LUT^ Finally, several superimposed The symmetrical actual mask corresponds to the table Real_M_Urr and a final correspondence table FinaLLUT = superimposed n ^ 丨 M LUT, as shown in Fig. 5J3. As shown in Fig. 6A and Fig. 6β, the system displays three actual After the mask is superimposed on the table, a waveform diagram of the waveform contour of an output is obtained. For example, when the position set to be adjusted is set to [6G, 65, the intensity to be adjusted is [10, 8, 10], respectively. 'The results of the three actual occlusion correspondence tables Mu, such as, Ml3 abundance are shown in Figure 6B. The actual mask corresponds to the number of tables Real-M-LUT superimposed, mainly according to the partition to adjust The range of influence varies. The user can change the position of the adjustment and the intensity of the adjustment to superimpose the various waveform contours (ProfHe). As shown in Figures 7A and 7B, the three actual masks are displayed. Another waveform diagram of the waveform contour of an output is obtained, for example, when the user sets the calibration to be adjusted. If the set point is not [6〇, 65, 7〇], and the adjustment intensity is [8, 10, 8], then the results of the three actual masks corresponding to the table M2 i, M22, M23 are as follows. Figure 7b is a waveform diagram showing the mapping relationship between the hue value 汕 and the saturation 杈 positive parameter dC. The horizontal slant in the figure represents the hue value of the input. Sh (ie, the user sets the saturation position point to be calibrated), and the ordinate indicates the saturation correction parameter dc (ie, the saturation intensity that the user wants to adjust). The mask indicated in Figure 8A Cover area M-LUT (Mask L〇〇kup 200924537 Ding ab丨e') contains several saturation correction parameters ^ value f] 2, 丨], 9, heart 2, 1〗, the mask area _ The number and value can be arbitrarily set by the user. According to the intensity of the user's desire to adjust, the actual mask can be obtained.

Rea丨—M—LUT=(0.5/ M_max )* M—LUT* (the strength/M_max that the user wants to adjust) where M_maX=max(M—LLJT) is the maximum value in the mask area M—(3) . In the mask area M-LUT towel, the first value is the maximum value, which means that the user should set the position to be adjusted (for example, the hue value %=6〇 shown in the figure), and use this position as the mapping axis. After the heart maps the other-half mask correspondence table (M-UJT), a symmetric actual mask correspondence table (Re(M-LUT) is generated. Finally, a plurality of actual material symmetry pairs Rea丨-M are superimposed. - After the LUT, you can get: The final correspondence table Fmal_LUT=1+ (superimposed n Real-M-Lui), as shown in the figure of the river. > Read the picture of Figure 9 12, _ shows the picture in Figure 3 The hue coefficient correction unit 33 (also applicable to the brightness coefficient correction unit 6) is a schematic diagram of different waveforms when different regions are adjusted for color production 强度 = intensity. As shown in the figure, the hue and brightness are adjusted according to the saturation conversion to the positive division. Strength: 1 · Coef~Y-y and Coef Η ν 垚 古w The sore, Ώ τ -J is the coefficient correction value of the Υ (stability) and Η (hue) in the longitudinal direction, and its value is 0. 〜1 ; 2. Coefficient correction value c〇ef_x=(pb*pb+piH5 ; ^ in the horizontal axis direction) The coefficient value of the output is determined according to the setting of x and the set point ρι to ρη, and η is the set point. The number of points on the map is at least three points. 16 200924537 There is no limit at most. 3. Different embodiments: 3-1. Partition adjustment hue and intensity of 'freedom' will not be adjusted due to color production The intensity, as shown in Figure 9; 3-2: The intensity of the hue and brightness of the zone adjustment affects only the medium and high chroma. In the example, the output coefficient correction value of the low chroma C〇ef / — U ' is therefore low The intensity of the hue and brightness of the partition is adjusted as shown in Fig. 10; 3-3: The intensity of the hue and brightness of the partition is adjusted, which only affects the low and medium chroma. In this embodiment, the high chroma output coefficient correction value Coef Qut=f), to adjust the hue and brightness intensity of the chroma to 0, as shown in Figure 11; 3-4: According to the adjustment requirements, at different chroma positions, the resulting partition The intensity of the hue and brightness of the school is also different, as shown in Fig. 12. Referring to Fig. 13 and Fig. 14, which shows the contrast of the image in Fig. 4, the input luminance signal γι of the unit 7 and the output luminance signal γ〇 The relationship is S curve, which makes the dark area of the image darker and the bright area brighter. The s curve can be numerically or by many Or four points form a corresponding method of approximating the s-curve. Take four points as an example (255, 255), (XI, yl), (x2, y2), (〇, 〇), change (xl, yl), (x2 , y2) Two-point coordinate value, that is, the strength of the image contrast can be changed. It can be seen from the above embodiments that the color image quality and the weekly system and method provided by the present invention have industrial use value, so the present invention has been met. The above description is only for the preferred embodiment of the present invention. 17 200924537 A person skilled in the art can make other improvements according to the above description, but these changes still belong to the present invention. The spirit of the invention and the scope of the patents defined below. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram showing a system configuration of a color image quality adjustment system according to a first embodiment of the present invention; FIG. 2 is a diagram showing a hue calculation unit in the first figure: calculating image signals R, G, and β FIG. 3 is a schematic diagram showing a system configuration of a color image quality adjustment system according to a second embodiment of the present invention; FIG. 4 is a schematic diagram showing a system configuration of a color image quality adjustment system according to a third embodiment of the present invention; The figure and the fifth diagram show the waveform diagram of the mapping relationship between the hue value % and the hue correction parameter guilt; the 6A and 6B diagrams show the waveforms of the waveform contours obtained by superimposing the three actual mask correspondence tables. Figure 7A and Figure 7B show another waveform diagram of the waveform profile of an output obtained by superimposing three actual mask correspondence tables; Figure 8A and Figure 8β show the relationship between the hue value and the saturation correction parameter. Schematic diagram of mapping the correspondence relationship; Figures 9 to 12 show 'the hue coefficient correction unit or the luminance coefficient correction unit in Fig. 3 to adjust the hue in different zones And different waveforms of the intensity of the brightness; 200924537 * Figure 14 and Figure 14 show the image in Figure 4 C / redundancy signal and output luminance - input τ should be related to the S curve. [Main component symbol description] 100' 100a' Color image quality adjustment system I Video signal source 2 Color signal conversion unit 3, 3a Hue and saturation conversion adjustment 31 Conditional coordinate axis rotation unit 32 Multiplier 33 Hue coefficient correction unit 34 Multiplier 35 Adder 36 Multiplier 4 Chroma signal inverse conversion unit 5, 5a Correction parameter generation unit 51 Hue calculation unit 52 Chromatic aberration and saturation map correspondence table 52a Chromatic aberration and saturation and luminance map. 6 Luminance conversion adjustment unit 61 Degree coefficient correction unit 62 Multiplier 63 Adder R, G, B Color video signal source 19 200924537 DH Hue correction parameter dHl Modified hue correction parameter dH2 Total hue correction parameter dH_All Global phase correction parameter DC Saturation correction parameter dCl Total saturation Degree correction parameter dC_All Global saturation correction parameter YC Brightness signal dY Brightness correction parameter dYl Corrected brightness correction parameter dY2 Total brightness correction parameter dY_All Global brightness correction parameter Sh Color value Pb, Pr Color signal Pb, Pr, After conversion Chroma signal Yo Luminance signal Pbo, Pro chroma output signal 20

Claims (1)

200924537 X. Patent application scope: 1. A color image quality adjustment system comprising: a color signal conversion unit for converting an input color video signal source into a component color signal comprising a luminance signal and a chroma signal; a calibration parameter generating unit, after calculating a hue value of the color video signal source from the color video signal source, obtaining a hue correction parameter and a saturation according to the obtained hue value according to a color difference and saturation mapping correspondence table Correction parameter; a hue and saturation conversion adjustment unit receives the chroma signal generated by the color signal conversion unit, and coordinates the chroma signal according to the hue correction parameter, and then corrects the parameter according to the saturation The multiplier multiplies the signals to produce an output chroma signal. 2.^ Apply for a patent (four)! The color image quality modulation system of the display device, wherein the color video signal source includes a color video signal source having R, g, and b, and the color signal includes an analog color signal or a digital color difference. Signal (3) ❹ ❹ ^" - ... ... ^ Patent application scope 帛 i of the display of the color image quality adjustment system 其中 其中 其中 色 色 色 色 色 色 色 色 色 色 色 色 色 色 色 色 色 色 色 色 色 色 色 色 色 色 色 色 色 色 色 色 色 色The chroma signal, and the color signal is converted according to the hue correction parameter, and the chroma signal is converted by the coordinates of the coordinates of the coordinates of the coordinates of the multiplier '(4) converted by coordinates) The correction parameter is matched to the output color signal. 4. The color image quality adjustment/segment system of the display according to the scope of the patent application, wherein the color signal conversion sheet generates the brightness signal and the hue and The output chroma signals generated by the saturation conversion adjustment unit together form a component chroma signal sent by a chroma signal inverse conversion unit. ' 5. - Color Like a quality adjustment system, comprising: - a color signal conversion unit ^ for converting a source of color video signals to a component color signal including a luminance signal and a chroma signal; a correction parameter generating unit, the color After calculating the hue value of the color video signal source in the video signal source, a hue correction parameter, a saturation correction parameter, and a brightness correction are obtained according to the obtained hue value and makeup-color difference and saturation and brightness mapping correspondence table. The hue and saturation conversion adjustment unit receives the chroma signal generated by the color signal conversion unit, and converts the chroma signal according to the hue correction parameter, and then performs a multiplier according to the saturation correction parameter. After the signal is multiplied, an output. chroma signal is generated; a brightness conversion adjustment unit receives the chroma signal generated by the color signal conversion unit, and adds the chroma signal according to the brightness correction parameter via an adder. After 'generating an output brightness signal. 22 200924537 .!: Judgment (4) 5 items of the color of the display Like n, the system of color video signals includes r, g, ::: color video signal source' and the chroma signal system includes T Pb ' Pr zhi s a for a ¥ ^ One of the shirts' signal V. 7·If the application of the patent scope 5 is obvious, "^ L σ mouth color image quality adjustment, /, the hue and saturation conversion adjustment unit, including Right. - Signal coordinate axis rotation unit receives the chroma signal, and the signal is converted according to the hue correction parameter: coordinate converted the chroma signal; - multiplier, the coordinate converted the chroma signal Multiplying the saturation fork positive number to obtain an output chroma signal. • The color image quality of the display described in claim 5 is the output of the brightness conversion adjustment unit. The luminance signal is composed of the output chroma signal generated by the hue and saturation conversion adjustment sheet-> the color chroma signal is outputted by a chroma signal inverse conversion unit. 9. The color image quality adjustment system of the display according to claim 5, wherein the chroma signal is sent to a hue coefficient correction unit and the hue correction parameter generated by the correction parameter generation unit is further - multiplying by a multiplier to obtain a corrected hue correction parameter, 2 23 200924537 The corrected eye of the correction is then combined with the - global phase correction parameter by the adder - the total hue correction parameter is sent to the hue And the saturation conversion period positive unit' is used as the h-phase phase and the saturation conversion adjustment unit to perform the hue correction parameter when performing the display conversion. The color image quality of the display described in item 5 of the patent claim is “, first”, the saturation correction generated by the correction parameter generating unit, and the number and the global saturation correction parameter are multiplied by the multiplier And multiplying the generated 乂^ and 杈 positive parameters into the hue and saturation conversion adjusting unit as the saturation correction parameter of the hue and saturation conversion adjusting unit when multiplying the signals. The color image quality adjustment system of the display according to claim 5, wherein the brightness conversion adjustment unit includes a brightness coefficient correction unit, and the brightness line correction unit converts the color signal to the chroma generated by the green element.峨 After receiving and performing the correction of the amount of light money, the brightness correction parameter generated by the 4 positive number generation unit is multiplied by a multiplication boundary to obtain a corrected brightness correction parameter, and then the degree correction of the domain is corrected. The parameter and the global brightness correction parameter are added by an adder' to generate a total brightness correction parameter as the brightness adjustment parameter of the brightness conversion adjustment In order to enable the brightness conversion adjustment unit to generate a brightness signal. 12 as claimed in the patent specification (4) n of the color image quality of the display 24 200924537 adjustment system, wherein the brightness conversion adjustment unit further includes an image contrast adjustment unit, The output brightness signal generated by the brightness conversion adjusting unit is further adjusted for image contrast, and then the output brightness is output: paint 1 j · A color image quality adjustment method, comprising the following steps: (a) an input color video signal Source R, α, B—Brightness signal and material signal are divided into 4 chroma signals/k includes (9) the color phase value of the color video signal source is calculated by the input color video signal source; u (4) according to the calculation The hue value is compared with the color difference and saturation map correspondence table - the hue correction parameter and the saturation correction number are obtained. (4) The chroma signal is rotated according to the obtained hue correction parameter, and the signal coordinate axis is rotated by a standard conversion formula; &gt (4) Multiplying the converted chroma signal by the obtained saturation correction parameter into the money to obtain an output color The color image quality of the display described in item 13 is the step (4), the color video signal source includes the color video signal source of B, and the color signal signal Pb, P^ digital color difference signal One of Cb, Cr or U'Vq. 25 200924537 Pb -(Pb¥Cos(dH_G) - Pr*Sin(dH_0)) Pi''=(Pr*C〇s(dH_G)+ Pb*Sin(dH—〇 ))) Pb', pr' means that the converted chroma signal Pb, Pr means that the original input chroma signal indicates the angle of the hue correction parameter at the pbpr coordinate plane. 16. The color image quality of the display according to claim 13 (4) method, wherein in step (b), the hue value of the color video signal source is calculated by the following steps: (bl) defining the color of the shirt (b2) Determine the difference between the maximum value of the signal and the minimum value of the signal. If the two are equal, the hue value = 〇 The output result; 〇3) if the signal maximum value and the signal minimum value are not equal, further determine whether the image signal R is equal to the signal maximum value, and if so, obtain the output result of the hue value=60*(G_B)MV; If no, it is determined whether the image signal G is equal to the maximum value of the signal, and if so, the output result of the hue value = 120*(BR)MV is obtained, and if not, the output of the hue value = 240*(R_G)MV is obtained. result. The method for adjusting the color image quality of the display according to item 16 of the patent of the month of the month, after the step (b3), further includes the following steps: (b4) determining whether the hue value is less than 〇, #否, that is, directly obtaining 26 The hue value output of 200924537, if yes, (1) output hue value = the obtained hue value +360. For example, the color image quality of the nth item π +1 + & 即 即 即 即 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中 其中- The step of brightness correction parameters. Please specify (4) to enclose the color image quality of the display described in item 18, which includes the following steps: the color signal is added by the adder according to the brightness correction parameter, and the output brightness signal is generated. ...the color image quality of the display described in the patent U 帛1 8 is the method of 'the color difference and saturation mapping corresponding table is formed by the following steps: (a) in the color difference and saturation mapping correspondence table Define a mask area M_LUT; (b) According to the hue position point to be adjusted by the user and the hue intensity to be adjusted, obtain an actual mask correspondence table Real_M_LU>M-LUT* (the intensity of the user wants to adjust) /M_max), where M_max=max(M_LU丁) is the maximum value in the mask area LLUT; (c) The first value in the mask area μ-LUT is the maximum value, and corresponds to the use Set the hue position point to be adjusted, and map the axis to the hue position point, map the other half to the color difference and saturation map correspondence table; (d)=Several symmetric actual mask corresponding纟After Real_M_LUT S is added, a table correspondence table is known as the pair of color difference and saturation maps. 28