CN101727852A - Image processing method and device - Google Patents
Image processing method and device Download PDFInfo
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- CN101727852A CN101727852A CN200810171590A CN200810171590A CN101727852A CN 101727852 A CN101727852 A CN 101727852A CN 200810171590 A CN200810171590 A CN 200810171590A CN 200810171590 A CN200810171590 A CN 200810171590A CN 101727852 A CN101727852 A CN 101727852A
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Abstract
The invention discloses image processing method and device, and belongs to the technical field of liquid crystal displays. The invention solves the problem of low image display quality of the liquid crystal television in the prior art. The image processing method comprises the following steps of: carrying out the real-time analysis on image contents to obtain the analytic result; and according to the analytic result, controlling the liquid crystal and adjusting the attributes of the image contents. The image processing device comprises an analytic unit and a control unit, wherein the analytic unit is used for carrying out the real-time analysis on the image contents to obtain the analytic result; and the control unit is used for controlling the liquid crystal according to the analytic result and adjusting the attributes of the image contents. The invention is suitable for enhancing the image display quality of the liquid crystal television.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly a kind of image processing method and device.
Background technology
At present,, produced in large quantities, replaced the CRT kinescope TV and the display of traditional type gradually with TV and display that lcd technology is made along with the continuous development of TV tech.LCD TV has radiationless harm, does not glimmer, operating voltage is low, power consumption is little, in light weight, volume is little, to advantages such as human body safety, therefore be subjected to people's popular welcome, and entered into the family of ordinary consumer gradually.
Though LCD TV has above-mentioned advantage,, on the expressive ability of image quality, especially on the vividness of colour, bright dark contrast and stereovision, LCD TV is not as CRT kinescope TV and PDP plasm TV.On image showed, it is pale partially that the image that LCD TV presented has integral color, a little less than the stereoscopic sensation, and defective such as bright degree is not enough, whole display quality is not high.
Summary of the invention
The invention provides a kind of image processing method and image processing apparatus, can promote the display quality of liquid crystal TV set image.
On the one hand, the invention provides a kind of image processing method, the technical scheme that is adopted is:
A kind of image processing method comprises:
Picture material is carried out real-time analysis, obtain analysis result;
According to described analysis result, liquid crystal is controlled, adjust the picture material attribute.
Wherein, describedly picture material carried out real-time analysis comprise:
Picture material is carried out color analysis, picture material is carried out marginal analysis, picture material is carried out scene analysis, picture material is carried out the colour gamut analysis, picture material is carried out brightness analysis and/or the environmental light brightness at image place is analyzed.
Wherein, described according to described analysis result, liquid crystal controlled be specially:
According to the brightness analysis result that picture material is carried out brightness analysis and/or the environmental light brightness at image place is analyzed, the control LCD backlight.
Further, described according to described analysis result, liquid crystal controlled be specially:
According to described analysis result, the control liquid crystal deflection.
Image processing method of the present invention by in real time picture material being analyzed, according to analysis result, dynamically carries out control corresponding and adjustment to picture material.Compared with prior art, the present invention can dynamically analyze and control the liquid crystal TV set picture material, the picture material that display quality is not high is handled, it is adjusted to the higher state of display quality, remedied LCD TV to a certain extent from defective, promoted the display quality of liquid crystal TV set image in image demonstration aspect.
On the other hand, the invention provides a kind of image processing apparatus, the technical scheme that is adopted is:
A kind of image processing apparatus comprises:
Analytic unit is used for picture material is carried out real-time analysis, obtains analysis result;
Control module is used for according to described analysis result liquid crystal being controlled, and adjusts the picture material attribute.
Wherein, described analytic unit comprises:
The color analysis unit is used for image is carried out color analysis;
The marginal analysis unit is used for image is carried out marginal analysis;
The scene analysis unit is used for image is carried out scene analysis;
The colour gamut analytic unit is used for image is carried out the colour gamut analysis;
The brightness of image analytic unit is used for picture material is carried out brightness analysis;
And/or the ambient brightness analytic unit, be used for the environmental light brightness at image place is analyzed.
Wherein, described control module comprises:
The LCD backlight control module is used for the analysis result control LCD backlight according to brightness of image analytic unit and/or the output of ambient brightness analytic unit.
Further, described control module comprises:
The liquid crystal deflection control module is used for the analysis result according to described analytic unit output, the control liquid crystal deflection.
Image processing apparatus of the present invention by in real time picture material being analyzed, according to analysis result, dynamically carries out control corresponding and adjustment to picture material.Compared with prior art, the present invention can dynamically analyze and control the liquid crystal TV set picture material, the picture material that display quality is not high is handled, it is adjusted to the higher state of display quality, remedied LCD TV to a certain extent from defective, promoted the display quality of liquid crystal TV set image in image demonstration aspect.
Description of drawings
Fig. 1 is an embodiment of the invention image processing method schematic flow sheet;
Fig. 2 carries out the histogram analysis synoptic diagram in the embodiment of the invention to brightness of image;
Fig. 3 is a curve map of regulating LCD backlight in the embodiment of the invention according to environmental light brightness;
Fig. 4 is an embodiment of the invention image processing apparatus structural representation.
Embodiment
Below in conjunction with accompanying drawing image processing method of the present invention and device are described in further detail.
The invention provides a kind of image processing method, can promote the display quality of liquid crystal TV set image.
As shown in Figure 1, described image processing method comprises:
S101, picture material is carried out real-time analysis, obtain analysis result.
Wherein, described analysis mainly comprises the real-time analysis that colour to image, border, scene, colour gamut, brightness etc. are carried out.
S102, according to described analysis result, liquid crystal is controlled, adjust the picture material attribute.
Image processing method of the present invention by in real time picture material being analyzed, according to analysis result, dynamically carries out control corresponding and adjustment to picture material.Compared with prior art, the present invention can dynamically analyze and control the liquid crystal TV set picture material, the picture material that display quality is not high is handled, it is adjusted to the higher state of display quality, remedied LCD TV to a certain extent from defective, promoted the display quality of liquid crystal TV set image in image demonstration aspect.
Wherein, described step S101 specifically comprises: picture material is carried out color analysis, picture material is carried out marginal analysis, picture material is carried out scene analysis, picture material is carried out the colour gamut analysis, picture material is carried out brightness analysis and/or the environmental light brightness at image place is analyzed.
Wherein, described picture material is carried out color analysis, the colour gamut that shows by the analysis image picture distributes, the red, green, blue three primary colours are carried out the COLOR COMPOSITION THROUGH DISTRIBUTION analysis, final determine its three's displaying ratio, and image color is carried out enhancement process, reach the color representation of approaching material object, make picture more true to nature, color is more bright-coloured.
Described picture material is carried out marginal analysis, the crenellated phenomena that often occurs at the moving image edge, by performance analysis and compensation operation, the ladder sawtooth that occurs when thoroughly eliminating moving image and showing line by line makes smoothly nature of image border.
Described picture material is carried out scene analysis,, the bright field of image frame and details in a play not acted out on stage, but told through dialogues are carried out performance analysis, respectively bright field scape and dark scene are controlled and compensated, promote the stereovision of image frame, bright degree in conjunction with light sensation frequency conversion back light system.
Described picture material is carried out the colour gamut analysis, improve, very intuitively and effectively the deviation of color rendering is adjusted and compensated, reach optimum condition by video picture of red, green, blue three primary colours and treatment technology to image frame.
Described picture material is carried out brightness analysis, before every frame picture shows, brightness of image, contrast are analysed scientifically, and the digital assay result passed to chip, and then every frame picture brightness, contrast are rationally shown according to data, reach optimum condition.
Wherein, described step S102 specifically comprises:
S1021, according to step S1011 picture material is carried out the colour gamut analysis result of the picture that color analysis draws, determine the enhancement process of color, by the control liquid crystal deflection, color to image strengthens or weakens, and makes the color of image adjust to the degree that people more true to nature, suitable more view and admire.
S1022, according to the marginal analysis result, carry out the processing of sharpening.By the special chip of LCD TV inside, the border of image is analyzed, determine the border of image, by the control liquid crystal deflection, carry out the sharpening of image and handle, make the border of image more clear.
S1023, according to the scene analysis result, determine the high-high brightness and the minimum brightness of scene, by control liquid crystal deflection, carry out the processing of brilliance control, make the scene of liquid crystal TV set image well arranged.
S1024, according to the colour gamut analysis result, determine color saturation, brightness and the tone of seven kinds of independent colour systems, and according to determined color saturation, brightness and tone, by the control liquid crystal deflection, picture material is adjusted accordingly, made the colour gamut of image broad more.
Wherein, described step S1021-S1024 promotes by the display quality of control liquid crystal deflection to image.
S1025, according to the brightness analysis result, image is strengthened or weakens processing.
Described analysis to brightness of image is real-time histogram analysis, analyze according to brightness components in proportions at different GTGs, draw the mean flow rate of entire image, utilize this result, by control liquid crystal deflection or LCD backlight, image is adjusted, thereby obtained the lifting effect of Hei Genghei, Bai Gengbai, improve the display quality of image.
As shown in Figure 2, described histogrammic horizontal ordinate is 32 grades of GTGs, the brightness of being had a few in the image is divided into 1 to 32 grade of GTG that is:, the most secretly is 1, and the brightest is 32.For example: on the display screen of WXGA resolution, total 1366*768=1049088 point.Described histogram ordinate is 32 grades of ratios, that is: in 32 intensity levels, the summation of the number of the point of each grade brightness is 1049088, for example: brightness is that the point of 1 GTG has 300, brightness is that the point of 2 GTGs has 500, and by that analogy, it is 32 grades that 1049088 points are divided into.
From described histogram as can be seen, form the inside of having a few of a sub-picture, the shared ratio of point in each brightness degree.
According to these data, can carry out the further processing of image, by dynamically changing the contrast range of image under certain what brightness, and keep the scope of other intensity level constant, thereby carry out the improvement of image quality.For example: improve the scenery level of image under dark background, improve the blur level of image under bright background etc.
Further, described step S102 also comprises:
S1026, according to the environmental light brightness analysis result at picture material brightness analysis result and/or image place, dynamically adjust LCD backlight.
On the basis that the brightness of image to TV programme that step S1025 is carried out is analyzed, ambient brightness to the image place is analyzed, wherein, the principle of regulating LCD backlight by ambient brightness is that sample detecting is carried out in the brightness of surround lighting, and in view of the above LCD backlight is controlled.That is: carry out related with brightness backlight environmental light brightness.Concrete interrelational form is:
Under the high light environment, backlight control voltage to be heightened, backlight illumination increases, so that watch bright image with distinct contrast;
Under low light environment, backlight control voltage to be turned down, backlight illumination reduces, thereby reduces the TV energy consumption, takees good care of user's eyesight simultaneously, and the fill light tape comes comfortable audiovisual experience.
As shown in Figure 3, realized one high slightly, low slightly two a sets of curves control is as the transfer function of environmental light brightness 301 with backlight illumination 302.Wherein, two sets of curves tendencies are similar, illustrate that above-mentioned related dimming mode does not change, and are just variant slightly to the height of concrete backlight illumination.
Further, by the collaborative work of histogram and adjusting backlight, can realize that LCD backlight changes according to the variation of picture material.This working method combination can realize:
When integral image brightness is higher, improve backlight illumination; When integral image brightness is low, reduce backlight illumination.Thereby obtain higher dynamic contrast, usually, described contrast was greater than 10000: 1.
When integral image brightness is higher, reduce backlight illumination; When integral image brightness is low, improve backlight illumination.Thereby more shown level of detail.
When integral image brightness is higher, reduce the brightness value of image processing section, improve backlight illumination simultaneously; When integral image brightness is low, improve the brightness value of image processing section, reduce backlight illumination simultaneously.Thereby the variation that obtains brightness of image is cancelled, and continuous variation backlight, the energy-saving effect that power is reduced greatly.
Wherein, the image processing method that the described embodiment of the invention provides is applicable to video equipments such as televisor.
Thereby, utilize the embodiments of the invention image processing method, in real time picture material is analyzed by video signal preprocessor, targetedly the display quality of LCD TV image is promoted according to the character of picture.Not only promoted the telepresenc of watching TV greatly, and avoided blindly improving color and contrasted picture exaggeration and the visual fatigue that causes, and can dynamically regulate backlight illumination, realized energy-saving and cost-reducing.
Corresponding with above-mentioned image processing method, the present invention also provides a kind of image processing apparatus.
As shown in Figure 4, described image processing apparatus comprises:
Wherein, described analysis mainly comprises the real-time analysis that colour to image, border, scene, colour gamut, brightness etc. are carried out.
Image processing apparatus of the present invention by in real time picture material being analyzed, according to analysis result, dynamically carries out control corresponding and adjustment to picture material.Compared with prior art, the present invention can dynamically analyze and control the liquid crystal TV set picture material, the picture material that display quality is not high is handled, it is adjusted to the higher state of display quality, remedied LCD TV to a certain extent from defective, promoted the display quality of liquid crystal TV set image in image demonstration aspect.
Wherein, described analytic unit 401 comprises:
Colour gamut analytic unit 4014 is used for image is carried out the colour gamut analysis;
Brightness of image analytic unit 4015 is used for image 403 contents are carried out brightness analysis;
And/or ambient brightness analytic unit 4016, be used for surround lighting 404 brightness at image place are analyzed.
Wherein, described control module 402 comprises:
LCD backlight control module 4022 is used for the analysis result according to brightness of image analytic unit 4015 and/or 4016 outputs of ambient brightness analytic unit, control LCD backlight, the display quality of lifting image.
Further, described control module comprises:
Liquid crystal deflection control module 4021 is used for the analysis result according to described analytic unit 401 outputs, control liquid crystal deflection, the display quality of lifting image.
Wherein, the image processing apparatus that the described embodiment of the invention provides is applicable to video equipments such as televisor.
Thereby, utilize the embodiments of the invention image processing apparatus, in real time picture material is analyzed by video signal preprocessor, targetedly the display quality of LCD TV image is promoted according to the character of picture.Not only promoted the telepresenc of watching TV greatly, and avoided blindly improving color and contrasted picture exaggeration and the visual fatigue that causes, and can dynamically regulate backlight illumination, realized energy-saving and cost-reducing.
Certainly, the above only is the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses, can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claim was defined.
Claims (10)
1. an image processing method is characterized in that, comprising:
Picture material is carried out real-time analysis, obtain analysis result;
According to described analysis result, liquid crystal is controlled, adjust the picture material attribute.
2. image processing method according to claim 1 is characterized in that, describedly picture material is carried out real-time analysis comprises:
Picture material is carried out color analysis, picture material is carried out marginal analysis, picture material is carried out scene analysis, picture material is carried out the colour gamut analysis, picture material is carried out brightness analysis and/or the environmental light brightness at image place is analyzed.
3. image processing method according to claim 2 is characterized in that, describedly picture material is carried out brightness analysis is specially:
Histogram analysis is carried out in picture material brightness.
4. image processing method according to claim 2 is characterized in that, and is described according to described analysis result, liquid crystal controlled be specially:
According to the brightness analysis result that picture material is carried out brightness analysis and/or the environmental light brightness at image place is analyzed, the control LCD backlight.
5. according to the arbitrary described image processing method of claim 1 to 4, it is characterized in that, described according to described analysis result, liquid crystal controlled be specially:
According to described analysis result, the control liquid crystal deflection.
6. an image processing apparatus is characterized in that, comprising:
Analytic unit is used for picture material is carried out real-time analysis, obtains analysis result;
Control module is used for according to described analysis result liquid crystal being controlled, and adjusts the picture material attribute.
7. image processing apparatus according to claim 6 is characterized in that, described analytic unit comprises:
The color analysis unit is used for image is carried out color analysis;
The marginal analysis unit is used for image is carried out marginal analysis;
The scene analysis unit is used for image is carried out scene analysis;
The colour gamut analytic unit is used for image is carried out the colour gamut analysis;
The brightness of image analytic unit is used for picture material is carried out brightness analysis;
And/or the ambient brightness analytic unit, be used for the environmental light brightness at image place is analyzed.
8. image processing apparatus according to claim 7 is characterized in that, the brightness analysis that described brightness of image analytic unit carries out picture material is a histogram analysis.
9. image processing apparatus according to claim 8 is characterized in that, described control module comprises:
The LCD backlight control module is used for the analysis result control LCD backlight according to brightness of image analytic unit and/or the output of ambient brightness analytic unit.
10. according to the arbitrary described image processing apparatus of claim 6 to 9, it is characterized in that described control module comprises:
The liquid crystal deflection control module is used for the analysis result according to described analytic unit output, the control liquid crystal deflection.
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| CN200810171590A CN101727852A (en) | 2008-10-29 | 2008-10-29 | Image processing method and device |
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| CN200810171590A CN101727852A (en) | 2008-10-29 | 2008-10-29 | Image processing method and device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078011A (en) * | 2014-06-25 | 2014-10-01 | 京东方科技集团股份有限公司 | Direct type backlight local backlight brightness adjustment method |
| CN105469747A (en) * | 2014-08-25 | 2016-04-06 | 深圳富泰宏精密工业有限公司 | Electronic device and backlight driving circuit thereof |
| WO2016138727A1 (en) * | 2015-03-02 | 2016-09-09 | 京东方科技集团股份有限公司 | Boundary determining method and device, and display driving method and device |
| CN109064998A (en) * | 2018-06-28 | 2018-12-21 | 努比亚技术有限公司 | A kind of screen luminance adjustment method, terminal and computer readable storage medium |
| CN114743508A (en) * | 2021-01-07 | 2022-07-12 | 海信视像科技股份有限公司 | Brightness compensation method and display device |
-
2008
- 2008-10-29 CN CN200810171590A patent/CN101727852A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104078011A (en) * | 2014-06-25 | 2014-10-01 | 京东方科技集团股份有限公司 | Direct type backlight local backlight brightness adjustment method |
| CN104078011B (en) * | 2014-06-25 | 2016-03-16 | 京东方科技集团股份有限公司 | The local backlight brightness adjusting method of direct-type backlight |
| CN105469747A (en) * | 2014-08-25 | 2016-04-06 | 深圳富泰宏精密工业有限公司 | Electronic device and backlight driving circuit thereof |
| WO2016138727A1 (en) * | 2015-03-02 | 2016-09-09 | 京东方科技集团股份有限公司 | Boundary determining method and device, and display driving method and device |
| US9779649B2 (en) | 2015-03-02 | 2017-10-03 | Boe Technology Group Co., Ltd. | Boundary judging method and device, and display driving method and device |
| CN109064998A (en) * | 2018-06-28 | 2018-12-21 | 努比亚技术有限公司 | A kind of screen luminance adjustment method, terminal and computer readable storage medium |
| CN114743508A (en) * | 2021-01-07 | 2022-07-12 | 海信视像科技股份有限公司 | Brightness compensation method and display device |
| CN114743508B (en) * | 2021-01-07 | 2024-05-31 | 海信视像科技股份有限公司 | Brightness compensation method and display device |
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Application publication date: 20100609 |