WO2010054585A1 - Procédé de surveillance dynamique d'une qualité d'image par l'affichage d’un tableau d'exposition sous forme d'histogramme sur l'écran d'affichage - Google Patents

Procédé de surveillance dynamique d'une qualité d'image par l'affichage d’un tableau d'exposition sous forme d'histogramme sur l'écran d'affichage Download PDF

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Publication number
WO2010054585A1
WO2010054585A1 PCT/CN2009/074867 CN2009074867W WO2010054585A1 WO 2010054585 A1 WO2010054585 A1 WO 2010054585A1 CN 2009074867 W CN2009074867 W CN 2009074867W WO 2010054585 A1 WO2010054585 A1 WO 2010054585A1
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WO
WIPO (PCT)
Prior art keywords
histogram
type exposure
displaying
display
option
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Application number
PCT/CN2009/074867
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English (en)
Chinese (zh)
Inventor
殷惠清
李立峰
肖江
林德志
Original Assignee
厦门华侨电子股份有限公司
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Application filed by 厦门华侨电子股份有限公司 filed Critical 厦门华侨电子股份有限公司
Publication of WO2010054585A1 publication Critical patent/WO2010054585A1/fr

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Classifications

    • 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

Definitions

  • the present invention relates to the field of digital television technology, and in particular, to a method for dynamically monitoring image quality in the form of displaying a histogram type exposure meter using a monitor screen.
  • the object of the present invention is to overcome the deficiencies of the prior art, and to provide a method for dynamically monitoring image quality by displaying a histogram type exposure meter on a monitor screen, which is a digital television video data stream received by a display device.
  • the luminance signal Y is divided into a plurality of brightness levels in the spatial domain, and the pixel condition distribution of the signal source itself is displayed in a graphical histogram on the display screen by weighting operation, thereby providing a reference for evaluating the image quality.
  • dynamic monitoring of image quality can be achieved.
  • a method for dynamically monitoring image quality by using a monitor screen to display a histogram type exposure table comprising the following steps:
  • [5] a. separating, by the filtering module of the display device, the luminance signal Y of each frame in the digital television video data stream received by the display device for displaying the dynamic image;
  • the level detection module of the display device divides the luminance signal Y in the separated digital television video data stream into several levels according to the pre-set hierarchical manner, and the magnitude of the luminance signal is from small to large. Separate in order; [7] c.
  • the statistical calculation module of the display device performs statistical calculation on the pixels of each level of the luminance signal;
  • the statistical calculation module of the display device performs weighting operation on the pixel values of the luminance signals of each level according to the weighting operation mode set in advance, and stores the weighted calculated data in the corresponding OS D display. Buffer storage area;
  • the signal processing module of the display device processes the weighted operation data of the pixels of all levels of the luminance signal of the same frame into a display of the dynamic image that can be synchronously displayed on the frame data stream by being operated by the OSD menu.
  • a histogram type exposure table on the interface includes a pixel scale for indicating brightness from the darkest to the brightest manner and corresponding to the brightness level distribution corresponding to the pixel scale a plurality of column histograms, the height of the column histogram being proportional to the pixel value of the weighting operation of the corresponding brightness level;
  • the display module of the display device recalls the weighted operation value of the pixel of the brightness signal from the corresponding storage area according to the operation instruction of the OSD menu, and dynamically displays the histogram type exposure table in synchronization Corresponding to the dynamic image display interface.
  • the OSD menu includes a menu option for opening or closing a histogram type exposure table, and the on/off menu option includes a method for synchronously displaying the histogram on a display interface of a display moving image of the display device.
  • the OSD menu further includes a menu option for selecting a display position of the histogram type exposure table, the position menu option includes displaying a histogram type exposure table on an upper left option of the upper left portion of the display interface, and placing the histogram
  • the pattern exposure meter displays the upper right option at the upper right of the display interface, the lower left option for displaying the histogram type exposure meter at the lower left of the display interface, and the right lower option for displaying the histogram type exposure meter at the lower right of the display interface.
  • a method for dynamically monitoring image quality in the form of displaying a histogram type exposure meter using a monitor screen is to pass a luminance signal Y input to a color digital video signal stream of a display device through a digital filter Separate; then use high-speed digital circuit to statistically classify the Y signal of each frame image according to its numerical value, and divide the luminance signal Y in the data stream from the smallest (darkest) to the largest (brightest) in the spatial domain as needed.
  • a number of brightness levels the number of pixels per level is used as a column height table It is shown that the histograms of all levels are arranged from small to large according to the brightness level.
  • the envelope waveform of the column histogram shows the distribution of image pixels of different brightness levels, and the height of the histogram is the weighted operation value of the total pixels of each frame of image;
  • the pixel scale below the histogram is set from small to large (darkest to brightest), indicating the position of the histogram pixel brightness level.
  • a method for dynamically monitoring image quality in the form of displaying a histogram type exposure meter by using a monitor screen is to dynamically display a histogram type exposure table synchronously on a display interface for displaying a moving image, the histogram
  • the waveform parameters displayed by the exposure meter can be used as an auxiliary tool to determine the exposure accuracy of the video image.
  • you can understand the pixel distribution in the image so as to know whether the dynamic range of the image pixels from the brightest to the darkest distribution is suitable. Since the present invention is a pixel real refresh statistics for each frame of images, it can be dynamically reflected.
  • the change of the image provides the user with a solid judgment basis, which can realize dynamic monitoring of the image quality.
  • a method for dynamically monitoring image quality in the form of displaying a histogram type exposure meter using a monitor screen, and the weighted operation mode used can normalize the 2.07 million pixels according to human visual habits. , prevents it from overflowing in the graphics and making it appear in a limited number of pixels in the OSD graphics.
  • a method for dynamically monitoring image quality in the form of displaying a histogram type exposure meter by using a monitor screen, and displaying or closing the histogram type exposure table on the display interface can be controlled by the OSD menu mode, operation ⁇ , can be achieved by the following steps:
  • the invention has the beneficial effects of dividing the luminance signal Y in the digital television video data stream received by the display device into a plurality of brightness levels in the spatial domain, and according to each frame image on the display screen by weighting operation
  • the content of the image is dynamically displayed in the form of a graphical histogram to reveal the pixel condition distribution of the signal source itself, so that the evaluation of the original image quality is completely determined by manual subjective evaluation, and the image quality is improved by using a graphic display method as a reference.
  • Scientific evaluations have also enabled dynamic monitoring of image quality.
  • FIG. 1 is a schematic view showing a histogram type exposure table
  • FIG. 2 is a process flow diagram of the method of the present invention.
  • a method for dynamically monitoring image quality in the form of displaying a histogram type exposure meter using a monitor screen includes the following steps:
  • [31] a. separating, by the filtering module of the display device, the luminance signal Y of each frame in the digital television video data stream received by the display device for displaying the dynamic image;
  • the level detection module of the display device divides the luminance signal Y in the separated digital television video data stream into 16 levels according to a pre-set hierarchical manner, that is, divided into 16 levels as shown in FIG.
  • the brightness signal is detected, and the magnitudes of the brightness signals are arranged in order from small to large;
  • the statistical calculation module of the display device performs statistical calculation on the pixels of the luminance signal of each level separately;
  • the statistical calculation module of the display device performs weighting operation on the pixel values of the luminance signals of each level according to the weighting operation mode set in advance, and stores the weighted calculated data in the corresponding OS D display. Buffer storage area;
  • the signal processing module of the display device weights the pixels of all levels of luminance signals of the same frame.
  • the calculated data is processed into a histogram type exposure table that can be operated by the OSD menu to be synchronously displayed on the display interface of the moving image generated by the frame data stream; the histogram type exposure table is included to indicate that the brightness is darkest a pixel scale arranged to the brightest mode and a plurality of column histograms corresponding to the brightness level distribution corresponding to the pixel scale, the height of the column histogram and the pixel value of the weighting operation of the corresponding brightness level Proportion
  • the display module of the display device recalls the weighted operation value of the pixel of the brightness signal from the corresponding storage area according to the operation instruction of the OSD menu, and dynamically displays the histogram type exposure table in synchronization Corresponding to the dynamic image display interface.
  • the menu item for opening or closing the histogram type exposure table is included in the OSD menu, and the on/off menu option includes a method for synchronously displaying the histogram on the display interface of the display moving image of the display device.
  • the OSD menu also includes a menu option for selecting the display position of the histogram type exposure table.
  • the position menu option includes an upper left option for displaying the histogram type exposure meter at the upper left of the display interface, and a histogram type.
  • the exposure meter displays the upper right option at the upper right of the display interface, the lower left option for displaying the histogram type exposure meter at the lower left of the display interface, and the lower right option for displaying the histogram type exposure meter at the lower right of the display interface.
  • the display position of the histogram type exposure meter can be adjusted through the OSD menu, and the adjustment is performed by the following operation steps:
  • a method for dynamically monitoring image quality in the form of displaying a histogram type exposure meter using a monitor screen is to pass a luminance signal Y input to a color digital video signal stream of a display device through a digital filter Separate; then use high-speed digital circuit to statistically classify the Y signal of each frame image according to its numerical value, and divide the luminance signal Y in the data stream from the smallest (darkest) to the largest (brightest) in the spatial domain as needed.
  • the distribution of the pixel of the level image, the height of the histogram is the weighted operation value of the total pixels of each frame of the image; the pixel scale of the arrangement from the smallest to the largest (the darkest to the brightest) under the histogram, indicating the brightness level of the histogram pixel Where it is.
  • the theory of digital television image it is possible to analyze whether the exposure of the image is reasonable and whether the brightness levels are uniform by the image pixels from the darkest to the brightest arrangement, thereby judging whether the image quality meets the requirements.
  • a method for dynamically monitoring image quality in the form of displaying a histogram type exposure meter by using a monitor screen is to dynamically display a histogram type exposure table synchronously on a display interface for displaying a moving image, the histogram
  • the waveform parameters displayed by the exposure meter can be used as an auxiliary tool to determine the exposure accuracy of the video image.
  • you can understand the pixel distribution in the image so as to know whether the dynamic range of the image pixels from the brightest to the darkest distribution is suitable. Since the present invention is a pixel real refresh statistics for each frame of images, it can be dynamically reflected.
  • the change of the image provides the user with a solid judgment basis, which can realize dynamic monitoring of the image quality.
  • a method for dynamically monitoring image quality in the form of displaying a histogram type exposure meter using a monitor screen, and the weighted operation mode used can normalize the 2.07 million pixel weight according to human visual habits. , prevents it from overflowing in the graphics and making it appear in a limited number of pixels in the OSD graphics.
  • Industrial applicability [57] The present invention provides a method for dynamically monitoring image quality in the form of displaying a histogram type exposure meter on a monitor screen, which is to divide the luminance signal Y in the digital television video data stream received by the display device into a plurality of brightness in the spatial domain.
  • Level through the weighting operation, dynamically display the pixel condition distribution of the signal source itself in a graphical histogram according to the content of each frame image on the display screen, thereby providing people with reference for evaluating the image quality. Realize dynamic monitoring of image quality and have good industrial applicability.

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  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)

Abstract

L'invention concerne un procédé de surveillance dynamique d'une qualité d'image par l'affichage d'un tableau d'exposition sous forme d'histogramme sur l'écran d'affichage, consistant en ce que le signal lumineux Y d'un flux de données vidéo numériques de télévision acceptées par le dispositif d'affichage soit divisé en des niveaux de luminosité dans l'espace et que la répartition d'état de pixel de la source d'exposition au signal soit affichée de manière dynamique sur l'écran d'affichage en fonction du contenu de chaque trame sous la forme d'un histogramme par calcul de poids, ce qui permet ainsi de fournir la référence estimée de qualité d'image aux utilisateurs et en même temps de surveiller de manière dynamique la qualité d'image.
PCT/CN2009/074867 2008-11-11 2009-11-09 Procédé de surveillance dynamique d'une qualité d'image par l'affichage d’un tableau d'exposition sous forme d'histogramme sur l'écran d'affichage WO2010054585A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200810072124.5 2008-11-11
CN2008100721245A CN101742351B (zh) 2008-11-11 2008-11-11 一种利用监视器屏幕显示直方图型曝光表的形式进行动态监视图像质量的方法

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WO2010054585A1 true WO2010054585A1 (fr) 2010-05-20

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CN (1) CN101742351B (fr)
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9106916B1 (en) 2010-10-29 2015-08-11 Qualcomm Technologies, Inc. Saturation insensitive H.264 weighted prediction coefficients estimation

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112118439B (zh) * 2019-06-20 2024-01-23 瑞昱半导体股份有限公司 视频品质检测方法与影像处理电路
CN112119631A (zh) * 2019-08-29 2020-12-22 深圳市大疆创新科技有限公司 监视图像生成方法、装置、设备和系统、图像处理设备

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1464479A (zh) * 2002-06-20 2003-12-31 成都威斯达芯片有限责任公司 可编程自适应的图像质量非线性增强处理技术
US20040120599A1 (en) * 2002-12-19 2004-06-24 Canon Kabushiki Kaisha Detection and enhancement of backlit images
CN1595958A (zh) * 2003-09-11 2005-03-16 松下电器产业株式会社 图象质量补正装置和图象质量补正方法
CN1666231A (zh) * 2002-06-26 2005-09-07 皇家飞利浦电子股份有限公司 用于对感知的图像和视频锐度进行估计的客观方法和系统
WO2008026398A1 (fr) * 2006-08-31 2008-03-06 Sony Corporation Système imageur, procédé de contrôle de système imageur et programme pour procédé de contrôle de système imageur

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1464479A (zh) * 2002-06-20 2003-12-31 成都威斯达芯片有限责任公司 可编程自适应的图像质量非线性增强处理技术
CN1666231A (zh) * 2002-06-26 2005-09-07 皇家飞利浦电子股份有限公司 用于对感知的图像和视频锐度进行估计的客观方法和系统
US20040120599A1 (en) * 2002-12-19 2004-06-24 Canon Kabushiki Kaisha Detection and enhancement of backlit images
CN1595958A (zh) * 2003-09-11 2005-03-16 松下电器产业株式会社 图象质量补正装置和图象质量补正方法
WO2008026398A1 (fr) * 2006-08-31 2008-03-06 Sony Corporation Système imageur, procédé de contrôle de système imageur et programme pour procédé de contrôle de système imageur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9106916B1 (en) 2010-10-29 2015-08-11 Qualcomm Technologies, Inc. Saturation insensitive H.264 weighted prediction coefficients estimation

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CN101742351B (zh) 2012-03-28
CN101742351A (zh) 2010-06-16

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