CN104811587A - Image brightness chrominance adjustment method, device and system - Google Patents
Image brightness chrominance adjustment method, device and system Download PDFInfo
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Abstract
The invention provides an image brightness chrominance adjustment method, device and system. The image brightness chrominance adjustment method comprises the following steps of capturing input data; separating the input data to obtain brightness components, a first chrominance component and a second chrominance component; judging whether a manual adjustment mode or an automatic adjustment mode is called, superposing a brightness component value, a first chrominance component value and a second chrominance component which are input currently and a brightness adjustment parameter, a first chrominance adjustment parameter and a second chrominance adjustment parameter under a corresponding adjustment mode and obtaining an adjusted brightness value, a first adjusted chrominance value and a second adjusted chrominance value; performing anti-overflow processing on the adjusted brightness value, the first adjusted chrominance value and the second adjusted brightness value and recombining and outputting a final brightness value, a first chrominance value and a second chrominance value after anti-overflow processing. The image brightness chrominance adjustment method has the advantages of improving the image distortion serious degree, improves the output image quality and increases the user experience.
Description
Technical field
The present invention relates to image adjustment field, particularly a kind of image brightness colourity control method, device and system.
Background technology
Along with video format, interface protocol and type get more and more, compatibility and the complexity of video equipment constantly increase.And video frequency terminal apparatus is as display, television set etc., the interface protocol of support and limited types, need unmatched signal source format conversion to become the signal format of video terminal support normally can receive, show before vision signal sends video terminal to.But change between unlike signal form, the conversion particularly between digital signal and analog signal, image brightness and color appearance distortion in various degree can be caused, had a strong impact on Consumer's Experience, even can not use.Traditional method can only go to improve by regulating the relevant parameter of display apparatus or other-end equipment, when a road signal delivers to multiple video terminal, each terminal is needed to regulate once, and only have the parameter such as brightness, contrast to regulate, colourity U, V cannot be separated independent adjustment, can not well improve when causing image fault serious.In addition, most of video frequency terminal apparatus does not support the regulatory function of these parameters.
Current display device and video terminal primary recipient be almost digital signal, the color of each pixel by being made up of three primary colors (R, G, B), the quality of image quality then depend primarily on its present the brightness of picture, contrast and saturation.At present three kinds of models are mainly contained to the process of digital picture: RGB model, HSV model and YUV model.Wherein, RGB model is the color model produced by three primary colors colour mixture principle, and three primary colors are red (R), green (G), blue (B), and all colours can be added superposition by three primary colors by different proportion and form.HSV model a kind ofly compares the color model meeting human-eye visual characteristic, has the advantage of YC separation.H, S, V represent tone, saturation and brightness respectively.
At present, the image attributes carried out for YUV model regulates, and the general method of color model conversion that adopts realizes, that is, first YUV modular form is converted to RGB model, and then is converted to HSV model, carry out color attribute adjustment to hsv color model.Current colors countenance means mostly are based on RGB and HSV colour model, and at present in technical field of video compression, video source form mostly is the discrete representation pattern and YUV of taking monochrome information and chrominance information.Even if same signal source, to different display device, the image effect of its display also has certain deviation.
Summary of the invention
The technical problem to be solved in the present invention is, there is distortion in various degree, affect the defect of Consumer's Experience in the above-mentioned image for prior art, provide a kind of can improve image fault the order of severity, improve output image quality, the image brightness colourity control method of enhancing Consumer's Experience, device and system.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of image brightness colourity control method, it is characterized in that, comprise the steps:
A) the input data of specifying image data format are caught; Described appointment image data format is YUV444 form;
B) described input data are carried out separation and obtain luminance component, the first chromatic component and the second chromatic component; Described first chromatic component is blue color difference component, and described second chromatic component is red color difference component;
C) judge to call manual adjustment mode or automatic shaping modes process, in this way manual adjustment mode according to outside MCU control command, then perform step D); Otherwise, perform step e);
D) luma component values of current input, the first chromatic component value and the second chromatic component value are superposed with the second colourity regulating parameter under the first colourity regulating parameter under brightness regulation parameter, manual adjustment mode under manual adjustment mode and manual adjustment mode respectively, chromatic value after adjusted rear brightness value, first regulates rear chromatic value and second to regulate respectively, performs step F);
E) luma component values of current input, the first chromatic component value and the second chromatic component value are superposed with the second colourity regulating parameter under the first colourity regulating parameter under brightness regulation parameter, automatically shaping modes under automatic shaping modes and automatic shaping modes respectively, chromatic value after adjusted rear brightness value, first regulates rear chromatic value and second to regulate respectively, performs step F);
F) after regulating brightness value, first after described adjustment, chromatic value and second regulates rear chromatic value to carry out anti-spilled process, and final brightness value, the first chromatic value and the second chromatic value that obtain after anti-spilled process is carried out restructuring output.
In image brightness colourity control method of the present invention, described step e) comprise further:
E1) system deviation is verified, obtain luminance deviation value, the first chromaticity distortion value and the second chromaticity distortion value;
E2) brightness regulation parameter under described automatic shaping modes is obtained according to the luma component values of current input and luminance deviation value, obtain the first colourity regulating parameter under described automatic shaping modes according to the first chromatic component of current input and the first chromaticity distortion value, obtain the second colourity regulating parameter under described automatic shaping modes according to the second chromatic component value of current input and the second chromaticity distortion value;
E3) luma component values of described current input and brightness regulation parameter under automatic shaping modes are carried out superposing obtain brightness value after described adjustment, first chromatic component value of described current input and the first colourity regulating parameter under automatic shaping modes are carried out superposing obtain described first regulate after chromatic value, the second chromatic component value of described current input and the second colourity regulating parameter under automatic shaping modes are carried out superposing obtain described second and regulate afterwards chromatic value.
In image brightness colourity control method of the present invention, under described manual adjustment mode, under brightness regulation parameter, manual adjustment mode, under the first colourity regulating parameter and manual adjustment mode, the span of the second colourity regulating parameter is respectively: the second colourity regulating parameter≤128 under the first colourity regulating parameter≤128 ,-128≤manual adjustment mode under brightness regulation parameter≤128 ,-128≤manual adjustment mode under-128≤manual adjustment mode.
In image brightness colourity control method of the present invention, under described manual adjustment mode, the size of brightness regulation parameter is-15, under described manual adjustment mode, the size of the first colourity regulating parameter is 3, and under described manual adjustment mode, the size of the second colourity regulating parameter is 0.
The invention still further relates to a kind of device realizing above-mentioned image brightness colourity control method, comprising:
Data capture unit: for catching the input data of specifying image data format; Described appointment image data format is YUV444 form;
Data separating unit: obtain luminance component, the first chromatic component and the second chromatic component for described input data are carried out separation;
Mode determination: call manual adjustment mode or shaping modes process automatically for judging according to outside MCU control command; Described first chromatic component is blue color difference component, and described second chromatic component is red color difference component;
Manual mode superpositing unit: for the luma component values of current input, the first chromatic component value and the second chromatic component value are superposed with the second colourity regulating parameter under the first colourity regulating parameter under brightness regulation parameter, manual adjustment mode under manual adjustment mode and manual adjustment mode respectively, chromatic value after adjusted rear brightness value, first regulates rear chromatic value and second to regulate respectively;
Automatic mode superpositing unit: for the luma component values of current input, the first chromatic component value and the second chromatic component value being superposed with the second colourity regulating parameter under the first colourity regulating parameter under brightness regulation parameter, automatically shaping modes under automatic shaping modes and automatic shaping modes respectively, adjusted rear brightness value, first regulates rear chromatic value and second to regulate rear chromatic value respectively;
Anti-spilled processing unit: for regulating rear chromatic value and second to regulate rear chromatic value to carry out anti-spilled process to brightness value, first after described adjustment, and final brightness value, the first chromatic value and the second chromatic value that obtain after anti-spilled process are carried out restructuring output.
In device of the present invention, described automatic mode superpositing unit comprises further:
Correction verification module: for verifying system deviation, obtains luminance deviation value, the first chromaticity distortion value and the second chromaticity distortion value;
Regulating parameter acquisition module: for obtaining brightness regulation parameter under described automatic shaping modes according to the luma component values of current input and luminance deviation value, obtain the first colourity regulating parameter under described automatic shaping modes according to the first chromatic component of current input and the first chromaticity distortion value, obtain the second colourity regulating parameter under described automatic shaping modes according to the second chromatic component value of current input and the second chromaticity distortion value;
Automatic adjustment laminating module: obtain brightness value after described adjustment for the luma component values of described current input and brightness regulation parameter under automatic shaping modes being carried out superposing, first chromatic component value of described current input and the first colourity regulating parameter under automatic shaping modes are carried out superposing obtain described first regulate after chromatic value, the second chromatic component value of described current input and the second colourity regulating parameter under automatic shaping modes are carried out superposing obtain described second and regulate afterwards chromatic value.
In device of the present invention, under described manual adjustment mode, under brightness regulation parameter, manual adjustment mode, under the first colourity regulating parameter and manual adjustment mode, the span of the second colourity regulating parameter is respectively: the second colourity regulating parameter≤128 under the first colourity regulating parameter≤128 ,-128≤manual adjustment mode under brightness regulation parameter≤128 ,-128≤manual adjustment mode under-128≤manual adjustment mode.
In device of the present invention, under manual adjustment mode, the size of brightness regulation parameter is-15, and under described manual adjustment mode, the size of the first colourity regulating parameter is 3, and under described manual adjustment mode, the size of the second colourity regulating parameter is 0.
The invention still further relates to a kind of image brightness colourity regulating system, comprise video reception chip, YC adjusting device, video transmission chip and MCU single chip control unit, described YC adjusting device sends chip with described video reception chip, video respectively and MCU single chip control unit is connected, and described MCU single chip control unit also sends chip with described video reception chip and video respectively and is connected; Described YC adjusting device is any one in said apparatus.
Implement image brightness colourity control method of the present invention, device and system, there is following beneficial effect: owing to obtaining luminance component, the first chromatic component and the second chromatic component by input data being carried out separation, first chromatic component is blue color difference component, and the second chromatic component is red color difference component; Then luminance component, the first chromatic component and the second chromatic component being carried out respectively the adjusted rear brightness value of superposition, first with corresponding regulating parameter regulates rear chromatic value and second to regulate rear chromatic value, after finally regulating rear chromatic value and the second adjustment to brightness value, first after adjustment, chromatic value carries out anti-spilled and restructuring process, so it can improve the order of severity, raising output image quality, the enhancing Consumer's Experience of image fault.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of method in image brightness colourity control method of the present invention, device and system embodiment;
The luma component values of current input, the first chromatic component value and the second chromatic component value superpose with the second colourity regulating parameter under the first colourity regulating parameter under brightness regulation parameter, automatically shaping modes under automatic shaping modes and automatic shaping modes in described embodiment by Fig. 2 respectively, and adjusted rear brightness value, first regulates rear chromatic value and second to regulate the particular flow sheet of rear chromatic value respectively;
Fig. 3 be in described embodiment YC regulate realize block diagram;
Fig. 4 is the structural representation of device in described embodiment;
Fig. 5 is the structural representation of system in described embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In image brightness colourity control method of the present invention, device and system embodiment, the flow chart of its image brightness colourity control method as shown in Figure 1.In Fig. 1, this image brightness colourity control method comprises the steps:
Step S01 catches the input data of specifying image data format: in this step, catches the input data of specifying image data format.It is worth mentioning that, YUV model is a kind of conventional colour coding method, is mainly used in the transmission optimizing colour-video signal, makes its compatible old-fashioned black-and-white TV.Y, U, V represent luminance signal, blue color difference signal and red color difference signal respectively.Compared with YUV transmits with rgb video signal, its great advantage be only need to take few frequency range (RGB require three independently vision signal transmit simultaneously).Wherein " Y " represents brightness (Luminance or Luma), namely grey decision-making; That " U " and " V " represents is then colourity (Chrominance or Chroma), and effect describes colors of image and saturation, is used to specify the color of pixel." brightness " is through RGB input signal to set up, and method is superimposed together by the specific part of rgb signal." colourity " then defines two aspects of color, is respectively tone and saturation.In the present embodiment, above-mentioned appointment image data format is YYV444 form.Certainly, under the certain situation of the present embodiment, above-mentioned appointment image data format also can be the data of extended formatting.
Input data are carried out separation and are obtained luminance component, the first chromatic component and the second chromatic component by step S02: in this step, input data are carried out separating luminance component, the first chromatic component and the second chromatic component, it is worth mentioning that, in the present embodiment, first chromatic component is blue color difference component, and the second chromatic component is red color difference component.In the present embodiment, for convenience of description, luminance component, the first chromatic component and the second chromatic component are labeled as Y, U, V respectively.
Step S03 judges to call manual adjustment mode or shaping modes process automatically according to outside MCU control command: in this step, judge to call manual adjustment mode or shaping modes process automatically according to outside MCU control command, then open the treatment mechanism of corresponding modes.In this step, if judgement is manual adjustment mode, then perform step S04; If what judge is automatic shaping modes, then perform step S05.
The luma component values of current input, the first chromatic component value and the second chromatic component value superpose with the second colourity regulating parameter under the first colourity regulating parameter under brightness regulation parameter, manual adjustment mode under manual adjustment mode and manual adjustment mode by step S04 respectively, chromatic value after adjusted rear brightness value, first regulates rear chromatic value and second to regulate respectively: if the result that above-mentioned steps S03 judges is manual adjustment mode, then perform this step.In this step, the luma component values of current input, the first chromatic component value and the second chromatic component value are superposed with the second colourity regulating parameter under the first colourity regulating parameter under brightness regulation parameter, manual adjustment mode under manual adjustment mode and manual adjustment mode respectively, chromatic value after adjusted rear brightness value, first regulates rear chromatic value and second to regulate respectively.In the present embodiment, for convenience of description, the luma component values of current input, the first chromatic component value and the second chromatic component value are labeled as Y respectively
i, U
iand V
i, under manual adjustment mode, under brightness regulation parameter, manual adjustment mode, under the first colourity regulating parameter and manual adjustment mode, the second colourity regulating parameter is labeled as B respectively
y, B
u, B
v, after after regulating, brightness value, first regulates rear chromatic value and second to regulate, chromatic value is labeled as Y', U', V' respectively.B
y, B
u, B
vfrom outside MCU.Then:
Y'＝Y
i+B
y，U'＝U
i+B
u，V'＝V
i+B
v
In the present embodiment, under manual adjustment mode, under brightness regulation parameter, manual adjustment mode, under the first colourity regulating parameter and manual adjustment mode, the span of the second colourity regulating parameter is respectively: the second colourity regulating parameter≤128 under the first colourity regulating parameter≤128 ,-128≤manual adjustment mode under brightness regulation parameter≤128 ,-128≤manual adjustment mode under-128≤manual adjustment mode.Namely B
y, B
u, B
v∈ [-128,128].It is worth mentioning that, in the present embodiment, under manual adjustment mode, the size of brightness regulation parameter is-15, and under manual adjustment mode, the size of the first colourity regulating parameter is 3, and under manual adjustment mode, the size of the second colourity regulating parameter is 0, and at this moment effect is better.Namely work as B
y=-15, B
u=3, B
vwhen=0, better effect can be reached.Execute this step, perform step S06.
The luma component values of current input, the first chromatic component value and the second chromatic component value superpose with the second colourity regulating parameter under the first colourity regulating parameter under brightness regulation parameter, automatically shaping modes under automatic shaping modes and automatic shaping modes by step S05 respectively, chromatic value after adjusted rear brightness value, first regulates rear chromatic value and second to regulate respectively: if the result that above-mentioned steps S03 judges is automatic Debugging pattern
Then perform this step.In this step, the luma component values of current input, the first chromatic component value and the second chromatic component value are superposed with the second colourity regulating parameter under the first colourity regulating parameter under brightness regulation parameter, automatically shaping modes under automatic shaping modes and automatic shaping modes respectively, adjusted rear brightness value, first regulates rear chromatic value and second to regulate rear chromatic value respectively.In the present embodiment, for convenience, the second colourity regulating parameter under the first colourity regulating parameter under brightness regulation parameter, automatically shaping modes under automatic shaping modes and automatic shaping modes is labeled as A respectively
y, A
uand A
v.Then:
Y'＝A
y+Y
i，U'＝A
u+U
i，V'＝A
v+V
i
Execute this step, perform step S06.
After step S06 regulates rear chromatic value and second to regulate to brightness value, first after adjustment, chromatic value carries out anti-spilled process, and final brightness value, the first chromatic value and the second chromatic value that obtain after anti-spilled process are carried out restructuring output: in this step, after regulating rear chromatic value and second to regulate to the rear brightness value of adjustment, first, chromatic value carries out anti-spilled process, and final brightness value, the first chromatic value and the second chromatic value that obtain after anti-spilled process is carried out restructuring output.Concrete, owing to likely can overflow after superposition, in the present embodiment, added anti-spilled process, its process is as follows:
Wherein, Y
o, U
oand V
obe respectively final brightness value, the first chromatic value and the second chromatic value.Then to Y
o, U
oand V
ocarry out restructuring to export.
Owing to obtaining luminance component, the first chromatic component and the second chromatic component by input data being carried out separation, then luminance component, the first chromatic component and the second chromatic component being carried out respectively the adjusted rear brightness value of superposition, first with corresponding regulating parameter regulates rear chromatic value and second to regulate rear chromatic value, after finally regulating rear chromatic value and the second adjustment to brightness value, first after adjustment, chromatic value carries out anti-spilled and restructuring process, so it can improve the order of severity, raising output image quality, the enhancing Consumer's Experience of image fault.
For the present embodiment, above-mentioned steps S05 also can refinement further, shown in the flow chart 2 after its refinement.In Fig. 2, above-mentioned steps S05 comprises further:
Step S51 verifies system deviation, obtains luminance deviation value, the first chromaticity distortion value and the second chromaticity distortion value: under automatic shaping modes, first check system deviation when use.In this step, system deviation is verified, obtain luminance deviation value, the first chromaticity distortion value and the second chromaticity distortion value.In the present embodiment, for convenience of description, luminance deviation value, the first chromaticity distortion value and the second chromaticity distortion value are labeled as Δ Y, Δ U and Δ V respectively.Concrete, send Y=128, U=128, V=128, system output obtains corresponding output brightness value, first and exports chromatic value and the second output chromatic value, in the present embodiment, output brightness value, the first output chromatic value and second is exported chromatic value and is labeled as Y respectively
a, U
aand V
a, then:
ΔY＝128-Y
A，ΔU＝128-U
A，ΔV＝128-V
A
Step S52 obtains brightness regulation parameter under automatic shaping modes according to the luma component values of current input and luminance deviation value, the first colourity regulating parameter under automatic shaping modes is obtained according to the first chromatic component of current input and the first chromaticity distortion value, the second colourity regulating parameter under automatic shaping modes is obtained: in this step according to the second chromatic component value of current input and the second chromaticity distortion value, brightness regulation parameter under automatic shaping modes is obtained according to the luma component values of current input and luminance deviation value, the first colourity regulating parameter under automatic shaping modes is obtained according to the first chromatic component of current input and the first chromaticity distortion value, the second colourity regulating parameter under automatic shaping modes is obtained according to the second chromatic component value of current input and the second chromaticity distortion value.It is specific as follows:
The luma component values of current input and brightness regulation parameter under automatic shaping modes carry out superposing adjusted rear brightness value by step S53, first chromatic component value of current input and the first colourity regulating parameter under automatic shaping modes are carried out superposing and obtains chromatic value after the first adjustment, second chromatic component value of current input and the second colourity regulating parameter under automatic shaping modes are carried out superposing and obtains chromatic value after the second adjustment: in this step, the luma component values of current input and brightness regulation parameter under automatic shaping modes are carried out superposing adjusted rear brightness value, first chromatic component value of current input and the first colourity regulating parameter under automatic shaping modes are carried out superposing and obtains chromatic value after the first adjustment, second chromatic component value of current input and the second colourity regulating parameter under automatic shaping modes are carried out superposing and obtains chromatic value after the second adjustment.It is specific as follows:
Y'＝A
y+Y
i，U'＝A
u+U
i，V'＝A
v+V
i
Fig. 3 be in the present embodiment YC regulate realize block diagram.
The present embodiment also relates to a kind of device realizing above-mentioned image brightness colourity control method, and its structural representation as shown in Figure 4.In Fig. 4, this device comprises data capture unit 1, data separating unit 2, mode determination 3, manual mode superpositing unit 4, automatic mode superpositing unit 5 and anti-spilled processing unit 6; Wherein, data capture unit 1 is for catching the input data of specifying image data format; Above-mentioned appointment image data format is YUV444 form; Data separating unit 2 obtains luminance component, the first chromatic component and the second chromatic component for input data being carried out separation; First chromatic component is blue color difference component, and the second chromatic component is red color difference component; Mode determination 3 calls manual adjustment mode or shaping modes process automatically for judging according to outside MCU control command; Manual mode superpositing unit 4 is for superposing the luma component values of current input, the first chromatic component value and the second chromatic component value with the second colourity regulating parameter under the first colourity regulating parameter under brightness regulation parameter, manual adjustment mode under manual adjustment mode and manual adjustment mode respectively, and adjusted rear brightness value, first regulates rear chromatic value and second to regulate rear chromatic value respectively; Automatic mode superpositing unit 5 is for superposing the luma component values of current input, the first chromatic component value and the second chromatic component value with the second colourity regulating parameter under the first colourity regulating parameter under brightness regulation parameter, automatically shaping modes under automatic shaping modes and automatic shaping modes respectively, and adjusted rear brightness value, first regulates rear chromatic value and second to regulate rear chromatic value respectively; Final brightness value, the first chromatic value and the second chromatic value that obtain after anti-spilled process for carrying out anti-spilled process to chromatic value after chromatic value after the rear brightness value of adjustment, the first adjustment and the second adjustment, and are carried out restructuring output by anti-spilled processing unit 6.Owing to obtaining luminance component, the first chromatic component and the second chromatic component by input data being carried out separation, then luminance component, the first chromatic component and the second chromatic component being carried out respectively the adjusted rear brightness value of superposition, first with corresponding regulating parameter regulates rear chromatic value and second to regulate rear chromatic value, after finally regulating rear chromatic value and the second adjustment to brightness value, first after adjustment, chromatic value carries out anti-spilled and restructuring process, so it can improve the order of severity, raising output image quality, the enhancing Consumer's Experience of image fault.
It is worth mentioning that, in the present embodiment, under manual adjustment mode, under brightness regulation parameter, manual adjustment mode, under the first colourity regulating parameter and manual adjustment mode, the span of the second colourity regulating parameter is respectively: the second colourity regulating parameter≤128 under the first colourity regulating parameter≤128 ,-128≤manual adjustment mode under brightness regulation parameter≤128 ,-128≤manual adjustment mode under-128≤manual adjustment mode.When under manual adjustment mode, the size of brightness regulation parameter is-15, under manual adjustment mode, the size of the first colourity regulating parameter is 3, and when under manual adjustment mode, the size of the second colourity regulating parameter is 0, its effect is better.
In the present embodiment, automatic mode superpositing unit 5 comprises correction verification module 51, regulating parameter acquisition module 52 further and automatically regulates laminating module 53; Wherein, correction verification module 51, for verifying system deviation, obtains luminance deviation value, the first chromaticity distortion value and the second chromaticity distortion value; Regulating parameter acquisition module 52 is for obtaining brightness regulation parameter under automatic shaping modes according to the luma component values of current input and luminance deviation value, obtain the first colourity regulating parameter under automatic shaping modes according to the first chromatic component of current input and the first chromaticity distortion value, obtain the second colourity regulating parameter under automatic shaping modes according to the second chromatic component value of current input and the second chromaticity distortion value; Automatic adjustment laminating module 53 is for being undertaken superposing adjusted rear brightness value by the luma component values of current input and brightness regulation parameter under automatic shaping modes, first chromatic component value of current input and the first colourity regulating parameter under automatic shaping modes are carried out superposing and obtains chromatic value after the first adjustment, the second chromatic component value of current input and the second colourity regulating parameter under automatic shaping modes are carried out superposing obtain chromatic value after the second adjustment.
The present embodiment also relates to a kind of image brightness colourity regulating system, and its structural representation as shown in Figure 5.In Fig. 5, this image brightness colourity regulating system comprises video reception chip, YC adjusting device, video transmission chip and MCU single chip control unit, YC adjusting device sends chip with video reception chip, video respectively and MCU single chip control unit is connected, and MCU single chip control unit also sends chip with video reception chip and video respectively and is connected; Wherein, YC adjusting device is the said apparatus in the present embodiment.
In a word, in the present embodiment, a kind of YC regulation technology automatically, manually annexed is provided, Y, U and V are separated independent regulation, can be good at the problem solving picture signal distortion, and more accurate than prior art, effect is better, uses more convenient.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. an image brightness colourity control method, is characterized in that, comprises the steps:
A) the input data of specifying image data format are caught; Described appointment image data format is YUV444 form;
B) described input data are carried out separation and obtain luminance component, the first chromatic component and the second chromatic component; Described first chromatic component is blue color difference component, and described second chromatic component is red color difference component;
C) judge to call manual adjustment mode or automatic shaping modes process, in this way manual adjustment mode according to outside MCU control command, then perform step D); Otherwise, perform step e);
D) luma component values of current input, the first chromatic component value and the second chromatic component value are superposed with the second colourity regulating parameter under the first colourity regulating parameter under brightness regulation parameter, manual adjustment mode under manual adjustment mode and manual adjustment mode respectively, chromatic value after adjusted rear brightness value, first regulates rear chromatic value and second to regulate respectively, performs step F);
E) luma component values of current input, the first chromatic component value and the second chromatic component value are superposed with the second colourity regulating parameter under the first colourity regulating parameter under brightness regulation parameter, automatically shaping modes under automatic shaping modes and automatic shaping modes respectively, chromatic value after adjusted rear brightness value, first regulates rear chromatic value and second to regulate respectively, performs step F);
F) after regulating brightness value, first after described adjustment, chromatic value and second regulates rear chromatic value to carry out anti-spilled process, and final brightness value, the first chromatic value and the second chromatic value that obtain after anti-spilled process is carried out restructuring output.
2. image brightness colourity control method according to claim 1, is characterized in that, described step e) comprise further:
E1) system deviation is verified, obtain luminance deviation value, the first chromaticity distortion value and the second chromaticity distortion value;
E2) brightness regulation parameter under described automatic shaping modes is obtained according to the luma component values of current input and luminance deviation value, obtain the first colourity regulating parameter under described automatic shaping modes according to the first chromatic component of current input and the first chromaticity distortion value, obtain the second colourity regulating parameter under described automatic shaping modes according to the second chromatic component value of current input and the second chromaticity distortion value;
E3) luma component values of described current input and brightness regulation parameter under automatic shaping modes are carried out superposing obtain brightness value after described adjustment, first chromatic component value of described current input and the first colourity regulating parameter under automatic shaping modes are carried out superposing obtain described first regulate after chromatic value, the second chromatic component value of described current input and the second colourity regulating parameter under automatic shaping modes are carried out superposing obtain described second and regulate afterwards chromatic value.
3. image brightness colourity control method according to claim 2, it is characterized in that, under described manual adjustment mode, under brightness regulation parameter, manual adjustment mode, under the first colourity regulating parameter and manual adjustment mode, the span of the second colourity regulating parameter is respectively: the second colourity regulating parameter≤128 under the first colourity regulating parameter≤128 ,-128≤manual adjustment mode under brightness regulation parameter≤128 ,-128≤manual adjustment mode under-128≤manual adjustment mode.
4. image brightness colourity control method according to claim 3, it is characterized in that, under described manual adjustment mode, the size of brightness regulation parameter is-15, under described manual adjustment mode, the size of the first colourity regulating parameter is 3, and under described manual adjustment mode, the size of the second colourity regulating parameter is 0.
5. realize a device for image brightness colourity control method as claimed in claim 1, it is characterized in that, comprising:
Data capture unit: for catching the input data of specifying image data format; Described appointment image data format is YUV444 form;
Data separating unit: obtain luminance component, the first chromatic component and the second chromatic component for described input data are carried out separation; Described first chromatic component is blue color difference component, and described second chromatic component is red color difference component;
Mode determination: call manual adjustment mode or shaping modes process automatically for judging according to outside MCU control command;
Manual mode superpositing unit: for the luma component values of current input, the first chromatic component value and the second chromatic component value are superposed with the second colourity regulating parameter under the first colourity regulating parameter under brightness regulation parameter, manual adjustment mode under manual adjustment mode and manual adjustment mode respectively, chromatic value after adjusted rear brightness value, first regulates rear chromatic value and second to regulate respectively;
Automatic mode superpositing unit: for the luma component values of current input, the first chromatic component value and the second chromatic component value being superposed with the second colourity regulating parameter under the first colourity regulating parameter under brightness regulation parameter, automatically shaping modes under automatic shaping modes and automatic shaping modes respectively, adjusted rear brightness value, first regulates rear chromatic value and second to regulate rear chromatic value respectively;
Anti-spilled processing unit: for regulating rear chromatic value and second to regulate rear chromatic value to carry out anti-spilled process to brightness value, first after described adjustment, and final brightness value, the first chromatic value and the second chromatic value that obtain after anti-spilled process are carried out restructuring output.
6. device according to claim 5, is characterized in that, described automatic mode superpositing unit comprises further:
Correction verification module: for verifying system deviation, obtains luminance deviation value, the first chromaticity distortion value and the second chromaticity distortion value;
Regulating parameter acquisition module: for obtaining brightness regulation parameter under described automatic shaping modes according to the luma component values of current input and luminance deviation value, obtain the first colourity regulating parameter under described automatic shaping modes according to the first chromatic component of current input and the first chromaticity distortion value, obtain the second colourity regulating parameter under described automatic shaping modes according to the second chromatic component value of current input and the second chromaticity distortion value;
Automatic adjustment laminating module: obtain brightness value after described adjustment for the luma component values of described current input and brightness regulation parameter under automatic shaping modes being carried out superposing, first chromatic component value of described current input and the first colourity regulating parameter under automatic shaping modes are carried out superposing obtain described first regulate after chromatic value, the second chromatic component value of described current input and the second colourity regulating parameter under automatic shaping modes are carried out superposing obtain described second and regulate afterwards chromatic value.
7. device according to claim 6, it is characterized in that, under described manual adjustment mode, under brightness regulation parameter, manual adjustment mode, under the first colourity regulating parameter and manual adjustment mode, the span of the second colourity regulating parameter is respectively: the second colourity regulating parameter≤128 under the first colourity regulating parameter≤128 ,-128≤manual adjustment mode under brightness regulation parameter≤128 ,-128≤manual adjustment mode under-128≤manual adjustment mode.
8. device according to claim 7, it is characterized in that, under manual adjustment mode, the size of brightness regulation parameter is-15, and under described manual adjustment mode, the size of the first colourity regulating parameter is 3, and under described manual adjustment mode, the size of the second colourity regulating parameter is 0.
9. an image brightness colourity regulating system, it is characterized in that, comprise video reception chip, YC adjusting device, video transmission chip and MCU single chip control unit, described YC adjusting device sends chip with described video reception chip, video respectively and MCU single chip control unit is connected, and described MCU single chip control unit also sends chip with described video reception chip and video respectively and is connected; Described YC adjusting device is the device described in described claim 5 to 8 any one.
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