CN101742351A - Method for dynamically monitoring picture quality by using monitor screen to display histogram exposure meter - Google Patents
Method for dynamically monitoring picture quality by using monitor screen to display histogram exposure meter Download PDFInfo
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- CN101742351A CN101742351A CN200810072124A CN200810072124A CN101742351A CN 101742351 A CN101742351 A CN 101742351A CN 200810072124 A CN200810072124 A CN 200810072124A CN 200810072124 A CN200810072124 A CN 200810072124A CN 101742351 A CN101742351 A CN 101742351A
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000012544 monitoring process Methods 0.000 title claims abstract description 21
- 238000004364 calculation method Methods 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims description 6
- 238000013459 approach Methods 0.000 claims description 3
- 230000001174 ascending effect Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000011156 evaluation Methods 0.000 description 5
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N17/00—Diagnosis, testing or measuring for television systems or their details
- H04N17/004—Diagnosis, testing or measuring for television systems or their details for digital television systems
Abstract
The invention discloses a method for dynamically monitoring picture quality by using monitor screen to display histogram exposure meter, comprising the following steps: dividing luminance signal Y in DTV video streaming, which is received by a display device into a plurality of luminance grades; dynamically displaying pixel distribution situation of self exposure of signal sources on the display screen according to in the form of picture histogram according to content of each frame of picture through weighted calculation, thus providing people with references for evaluating picture quality and dynamically monitoring picture quality.
Description
Technical field
The present invention relates to the digital television techniques field, particularly relate to the method that a kind of form of utilizing monitor screen to show Nogata pattern exposure meter is carried out dynamically monitoring picture quality.
Background technology
The domestic and international at present evaluation to the standard picture quality is to adopt artificial subjective assessment mode fully, in the prior art, evaluation to image mainly is to rely on different crowd that the subjective impression of picture quality is marked, then these appraisal result are carried out statistical computation, draw average mark, be used as the grade scoring of picture quality with this, existing this image quality evaluation mode, exist following drawback: the one, the quality situation of objective image without any quantizating index, is relied on subjective impression fully; The 2nd, existing subjective evaluation method is more accurate to still image, but bigger to the dynamic image difference.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art, provide a kind of form of utilizing monitor screen to show Nogata pattern exposure meter to carry out the method for dynamically monitoring picture quality, be that brightness signal Y in the digital TV video frequency data stream that display device is received is divided into some brightness degrees in spatial domain, on display screen, demonstrate the pixel situation distribution situation of signal source exposure itself in the histogrammic mode of figure by ranking operation, thereby, and can realize picture quality is carried out dynamic surveillance for people provide the reference that picture quality is estimated.
The technical solution adopted for the present invention to solve the technical problems is: a kind of form of utilizing monitor screen to show Nogata pattern exposure meter is carried out the method for dynamically monitoring picture quality, comprises the steps:
A. be used for showing that the brightness signal Y of each frame in the digital TV video frequency data stream of dynamic image separates by the filtration module of display device with display device received;
B. the level detection module of display device is divided into several grades with the brightness signal Y in the digital TV video frequency data stream of separating according to the hierarchical approaches that sets in advance, and is arranged in order separately by the numerical values recited of luminance signal is ascending;
C. the statistical computation module of display device is carried out statistical computation respectively to the pixel of the luminance signal of each grade;
D. the statistical computation module of display device is according to the ranking operation pattern that sets in advance, and the pixel value to the luminance signal of each grade computes weighted respectively, and the data after the weighted calculation are deposited in the corresponding OSD display buffer storage territory;
E. the signal processing module of display device becomes the data processing of the ranking operation of the pixel of the luminance signal of all grades of same frame the Nogata pattern exposure meter on the display interface of the dynamic image of can be operated by the OSD menu and being presented at this frame data stream synchronously and being produced; This Nogata pattern exposure meter comprises and is used for expressing brightness by distribute several column histograms of corresponding coupling of the darkest pixel scale of arranging to the brightest mode and corresponding brightness degree above this pixel scale and described, and the histogrammic height of this column is directly proportional with the pixel value of the ranking operation of corresponding brightness degree;
F. the display module of display device is according to the operational order of OSD menu, from the storage area of correspondence, access the ranking operation value of the pixel of described luminance signal, described Nogata pattern exposure meter synchronously dynamically is presented on the display interface of pairing dynamic image.
Include the menu option that is used for opening or closing Nogata pattern exposure meter in the described OSD menu, this ON/OFF menu option comprises on the display interface of the demonstration dynamic image that is used for being implemented in display device and shows opening option and being used for realizing that the Nogata pattern exposure meter that will show withdraws from the off option of display interface of described Nogata pattern exposure meter synchronously.
The menu option that also includes the display position that is used for selecting Nogata pattern exposure meter in the described OSD menu, this position menu option comprise with Nogata pattern exposure meter be presented at the upper left quarter of display interface upper left option, with Nogata pattern exposure meter be presented at the upper right quarter of display interface upper right option, Nogata pattern exposure meter is presented at the lower-left option of the lower left quarter of display interface, Nogata pattern exposure meter is presented at the bottom right option of the right lower quadrant of display interface.
A kind of form of utilizing monitor screen to show Nogata pattern exposure meter of the present invention is carried out the method for dynamically monitoring picture quality, is the brightness signal Y that is input in the colorful digital vision signal code stream of display device is separated by digital filter; Use high-speed digital circuit that the Y-signal of every two field picture is carried out statistical classification according to its numerical values recited then, as required the brightness signal Y in the data flow is divided into some brightness degrees from minimum (the darkest) to maximum (the brightest) in spatial domain; What statistic of the pixel of each grade is just represented with column, the block diagram of all grades is arranged from small to large by brightness degree, the histogrammic envelope waveform of column has shown the distribution situation of different brightness degree image pixels, and the height of block diagram all is the ranking operation value of the total pixel of every two field picture; Below histogram, be made as the pixel scale of (the darkest) arrangement from small to large, the position at expression histogram pixel brightness level place to the brightest.Can whether reasonable from the darkest exposure according to the digital TV image theory to the brightest arranging situation analysis image by image pixel, whether different intensity levels are even, thereby judge whether picture quality reaches requirement.
A kind of form of utilizing monitor screen to show Nogata pattern exposure meter of the present invention is carried out the method for dynamically monitoring picture quality, be synchronously dynamically to show Nogata pattern exposure meter showing on the display interface of dynamic image, the shown waveform parameter of coming out of this Nogata pattern exposure meter can be used as the aid of determining the video image exposure accuracy.Can understand pixel distribution situation in the image by Nogata pattern exposure meter, whether thereby it is suitable from the brightest dynamic range to the darkest distribution to understand image pixel, because being the pixel to every two field picture, the present invention refreshes statistics in real time, the situation of change that can reflect image dynamically, provide real-time basis for estimation to the user, can realize dynamic surveillance picture quality.
A kind of form of utilizing monitor screen to show Nogata pattern exposure meter of the present invention is carried out the method for dynamically monitoring picture quality, the ranking operation pattern that is adopted, can be according to human visual custom with 2,070,000 pixel weighting normalizeds, prevent from that it from overflowing and making in its pixel limited in the OSD figure to show in figure.
A kind of form of utilizing monitor screen to show Nogata pattern exposure meter of the present invention is carried out the method for dynamically monitoring picture quality, Nogata pattern exposure meter is in the demonstration of display interface or close and can control by the OSD menu mode, during operation, can realize by following operating procedure:
M1. enter main menu: select the user that option is set;
M2. enter the user option submenu: select the picture control option;
M3. select dynamic Nogata pattern ON/OFF;
M4. confirm.
A kind of form of utilizing monitor screen to show Nogata pattern exposure meter of the present invention is carried out the method for dynamically monitoring picture quality, Nogata pattern exposure meter can be controlled by the OSD menu mode at the display position of display interface, during operation, can realize by following operating procedure:
N1. enter main menu: select the user that option is set;
N2. enter the user option submenu: select the picture control option;
N3. enter the picture control submenu: select upper left, upper right, lower-left, bottom-right graph image position;
N4. press acknowledgement key.The position that dynamic Nogata pattern exposure meter is promptly selected on screen occurs.
The invention has the beneficial effects as follows, owing to adopted the brightness signal Y in the digital TV video frequency data stream that display device is received to be divided into some brightness degrees in spatial domain, and on display screen, demonstrate the pixel situation distribution situation of signal source exposure itself dynamically in the histogrammic mode of figure by ranking operation according to the content of every two field picture, make the evaluation of original picture quality rely on artificial subjective assessment to determine grade fully, rise to a kind of graphic display method is for referencial use picture quality is carried out the evaluation of science, also realized dynamic surveillance simultaneously picture quality.
Below in conjunction with drawings and Examples the present invention is described in further detail; But the method that a kind of form of utilizing monitor screen to show Nogata pattern exposure meter of the present invention is carried out dynamically monitoring picture quality is not limited to embodiment.
Description of drawings
Fig. 1 is the schematic diagram that shows Nogata pattern exposure meter;
Fig. 2 is the process chart of the inventive method.
Embodiment
Shown in accompanying drawing, a kind of form of utilizing monitor screen to show Nogata pattern exposure meter of the present invention is carried out the method for dynamically monitoring picture quality, comprises the steps:
A. be used for showing that the brightness signal Y of each frame in the digital TV video frequency data stream of dynamic image separates by the filtration module of display device with display device received;
B. the level detection module of display device is divided into 16 grades with the brightness signal Y in the digital TV video frequency data stream of separating according to the hierarchical approaches that sets in advance, promptly the 16 grades of luminance signals that are divided into as shown in Figure 2 detect, and are arranged in order separately by the numerical values recited of luminance signal is ascending;
C. the statistical computation module of display device is carried out statistical computation respectively to the pixel of the luminance signal of each grade;
D. the statistical computation module of display device is according to the ranking operation pattern that sets in advance, and the pixel value to the luminance signal of each grade computes weighted respectively, and the data after the weighted calculation are deposited in the corresponding OSD display buffer storage territory;
E. the signal processing module of display device becomes the data processing of the ranking operation of the pixel of the luminance signal of all grades of same frame the Nogata pattern exposure meter on the display interface of the dynamic image of can be operated by the OSD menu and being presented at this frame data stream synchronously and being produced; This Nogata pattern exposure meter comprises and is used for expressing brightness by distribute several column histograms of corresponding coupling of the darkest pixel scale of arranging to the brightest mode and corresponding brightness degree above this pixel scale and described, and the histogrammic height of this column is directly proportional with the pixel value of the ranking operation of corresponding brightness degree;
F. the display module of display device is according to the operational order of OSD menu, from the storage area of correspondence, access the ranking operation value of the pixel of described luminance signal, described Nogata pattern exposure meter synchronously dynamically is presented on the display interface of pairing dynamic image.
Include the menu option that is used for opening or closing Nogata pattern exposure meter in the OSD menu, this ON/OFF menu option comprises on the display interface of the demonstration dynamic image that is used for being implemented in display device and shows opening option and being used for realizing that the Nogata pattern exposure meter that will show withdraws from the off option of display interface of described Nogata pattern exposure meter synchronously.
When needs are presented at display interface with Nogata pattern exposure meter, can realize by following operating procedure:
M1. enter main menu: select the user that option is set;
M2. enter the user option submenu: select the picture control option;
M3. select dynamic Nogata pattern to open;
M4. confirm.
When the Nogata pattern exposure meter that will be presented at display interface when needs withdraws from, can realize by following operating procedure:
M1. enter main menu: select the user that option is set;
M2. enter the user option submenu: select the picture control option;
M3. select dynamic Nogata pattern to close;
M4. confirm.
The menu option that in the OSD menu, also includes the display position that is used for selecting Nogata pattern exposure meter, this position menu option comprise with Nogata pattern exposure meter be presented at the upper left quarter of display interface upper left option, with Nogata pattern exposure meter be presented at the upper right quarter of display interface upper right option, Nogata pattern exposure meter is presented at the lower-left option of the lower left quarter of display interface, Nogata pattern exposure meter is presented at the bottom right option of the right lower quadrant of display interface.
Nogata pattern exposure meter can be adjusted the display position of Nogata pattern exposure meter by the OSD menu under show state, during adjustment, is realized by following operating procedure:
N1. enter main menu: select the user that option is set;
N2. enter the user option submenu: select the picture control option;
N3. enter the picture control submenu: select upper left, upper right, lower-left, bottom-right graph image position;
N4. press acknowledgement key.The position that dynamic Nogata pattern exposure meter is promptly selected on screen occurs.
A kind of form of utilizing monitor screen to show Nogata pattern exposure meter of the present invention is carried out the method for dynamically monitoring picture quality, is the brightness signal Y that is input in the colorful digital vision signal code stream of display device is separated by digital filter; Use high-speed digital circuit that the Y-signal of every two field picture is carried out statistical classification according to its numerical values recited then, as required the brightness signal Y in the data flow is divided into 16 brightness degrees from minimum (the darkest) to maximum (the brightest) in spatial domain; What statistic of the pixel of each grade is just represented with column, the block diagram of all grades is arranged (as shown in Figure 1) from small to large by brightness degree, the histogrammic envelope waveform of column has shown the distribution situation of different brightness degree image pixels, and the height of block diagram all is the ranking operation value of the total pixel of every two field picture; Below histogram, be made as the pixel scale of (the darkest) arrangement from small to large, the position at expression histogram pixel brightness level place to the brightest.Can whether reasonable from the darkest exposure according to the digital TV image theory to the brightest arranging situation analysis image by image pixel, whether different intensity levels are even, thereby judge whether picture quality reaches requirement.
A kind of form of utilizing monitor screen to show Nogata pattern exposure meter of the present invention is carried out the method for dynamically monitoring picture quality, be synchronously dynamically to show Nogata pattern exposure meter showing on the display interface of dynamic image, the shown waveform parameter of coming out of this Nogata pattern exposure meter can be used as the aid of determining the video image exposure accuracy.Can understand pixel distribution situation in the image by Nogata pattern exposure meter, whether thereby it is suitable from the brightest dynamic range to the darkest distribution to understand image pixel, because being the pixel to every two field picture, the present invention refreshes statistics in real time, the situation of change that can reflect image dynamically, provide real-time basis for estimation to the user, can realize dynamic surveillance picture quality.
A kind of form of utilizing monitor screen to show Nogata pattern exposure meter of the present invention is carried out the method for dynamically monitoring picture quality, the ranking operation pattern that is adopted, can be according to human visual custom with 2,070,000 pixel weighting normalizeds, prevent from that it from overflowing and making in its pixel limited in the OSD figure to show in figure.
The foregoing description only is used for further specifying the method that a kind of form of utilizing monitor screen to show Nogata pattern exposure meter of the present invention is carried out dynamically monitoring picture quality; but the present invention is not limited to embodiment; every foundation technical spirit of the present invention all falls in the protection range of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
Claims (3)
1. a form of utilizing monitor screen to show Nogata pattern exposure meter is carried out the method for dynamically monitoring picture quality, it is characterized in that: comprise the steps:
A. be used for showing that the brightness signal Y of each frame in the digital TV video frequency data stream of dynamic image separates by the filtration module of display device with display device received;
B. the level detection module of display device is divided into several grades with the brightness signal Y in the digital TV video frequency data stream of separating according to the hierarchical approaches that sets in advance, and is arranged in order separately by the numerical values recited of luminance signal is ascending;
C. the statistical computation module of display device is carried out statistical computation respectively to the pixel of the luminance signal of each grade;
D. the statistical computation module of display device is according to the ranking operation pattern that sets in advance, and the pixel value to the luminance signal of each grade computes weighted respectively, and the data after the weighted calculation are deposited in the corresponding OSD display buffer storage territory;
E. the signal processing module of display device becomes the data processing of the ranking operation of the pixel of the luminance signal of all grades of same frame the Nogata pattern exposure meter on the display interface of the dynamic image of can be operated by the OSD menu and being presented at this frame data stream synchronously and being produced; This Nogata pattern exposure meter comprises and is used for expressing brightness by distribute several column histograms of corresponding coupling of the darkest pixel scale of arranging to the brightest mode and corresponding brightness degree above this pixel scale and described, and the histogrammic height of this column is directly proportional with the pixel value of the ranking operation of corresponding brightness degree;
F. the display module of display device is according to the operational order of OSD menu, from the storage area of correspondence, access the ranking operation value of the pixel of described luminance signal, described Nogata pattern exposure meter synchronously dynamically is presented on the display interface of pairing dynamic image.
2. a kind of form of utilizing monitor screen to show Nogata pattern exposure meter according to claim 1 is carried out the method for dynamically monitoring picture quality, it is characterized in that: include the menu option that is used for opening or closing Nogata pattern exposure meter in the described OSD menu, this ON/OFF menu option comprises on the display interface of the demonstration dynamic image that is used for being implemented in display device and shows opening option and being used for realizing that the Nogata pattern exposure meter that will show withdraws from the off option of display interface of described Nogata pattern exposure meter synchronously.
3. a kind of form of utilizing monitor screen to show Nogata pattern exposure meter according to claim 2 is carried out the method for dynamically monitoring picture quality, it is characterized in that: also include the menu option of the display position that is used for selecting Nogata pattern exposure meter in the described OSD menu, this position menu option comprises the upper left option that Nogata pattern exposure meter is presented at the upper left quarter of display interface, Nogata pattern exposure meter is presented at the upper right option of the upper right quarter of display interface, Nogata pattern exposure meter is presented at the lower-left option of the lower left quarter of display interface, Nogata pattern exposure meter is presented at the bottom right option of the right lower quadrant of display interface.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100721245A CN101742351B (en) | 2008-11-11 | 2008-11-11 | Method for dynamically monitoring picture quality by using monitor screen to display histogram exposure meter |
| PCT/CN2009/074867 WO2010054585A1 (en) | 2008-11-11 | 2009-11-09 | Method for dynamically monitoring image quality by the way of displaying the histogram exposure table on the monitor screen |
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| CN2008100721245A CN101742351B (en) | 2008-11-11 | 2008-11-11 | Method for dynamically monitoring picture quality by using monitor screen to display histogram exposure meter |
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| CN101742351A true CN101742351A (en) | 2010-06-16 |
| CN101742351B CN101742351B (en) | 2012-03-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112118439A (en) * | 2019-06-20 | 2020-12-22 | 瑞昱半导体股份有限公司 | Video quality detection method and image processing circuit |
| WO2021035643A1 (en) * | 2019-08-29 | 2021-03-04 | 深圳市大疆创新科技有限公司 | Monitoring image generation method, apparatus, device, system, and image processing device |
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| US9106916B1 (en) | 2010-10-29 | 2015-08-11 | Qualcomm Technologies, Inc. | Saturation insensitive H.264 weighted prediction coefficients estimation |
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| CN1244075C (en) * | 2002-06-20 | 2006-03-01 | 成都威斯达芯片有限责任公司 | Programmable self-adapting image quality non-linear enhancement processing process |
| US7079704B2 (en) * | 2002-06-26 | 2006-07-18 | Koninklijke Philips Electronics N.V. | Objective method and system for estimating perceived image and video sharpness |
| US20040120599A1 (en) * | 2002-12-19 | 2004-06-24 | Canon Kabushiki Kaisha | Detection and enhancement of backlit images |
| TWI245557B (en) * | 2003-09-11 | 2005-12-11 | Matsushita Electric Ind Co Ltd | Image compensation apparatus and method for the same |
| JP4120844B2 (en) * | 2006-08-31 | 2008-07-16 | ソニー株式会社 | IMAGING DEVICE, IMAGING DEVICE CONTROL METHOD, AND IMAGING DEVICE CONTROL METHOD PROGRAM |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112118439A (en) * | 2019-06-20 | 2020-12-22 | 瑞昱半导体股份有限公司 | Video quality detection method and image processing circuit |
| CN112118439B (en) * | 2019-06-20 | 2024-01-23 | 瑞昱半导体股份有限公司 | Video quality detection method and image processing circuit |
| WO2021035643A1 (en) * | 2019-08-29 | 2021-03-04 | 深圳市大疆创新科技有限公司 | Monitoring image generation method, apparatus, device, system, and image processing device |
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| WO2010054585A1 (en) | 2010-05-20 |
| CN101742351B (en) | 2012-03-28 |
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