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A method and device for detecting mosaics

A mosaic and equipment technology, applied in image analysis, instruments, calculations, etc., can solve the problem of low efficiency of mosaic detection, and achieve the effect of improving efficiency

Inactive Publication Date: 2016-07-13
PEKING UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Embodiments of the present invention provide a method and device for detecting mosaics to solve the problem of relatively low efficiency of current methods for detecting mosaics

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  • A method and device for detecting mosaics
  • A method and device for detecting mosaics
  • A method and device for detecting mosaics

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Embodiment Construction

[0021] In the embodiment of the present invention, for a color difference value of a macroblock of a frame to be detected, the number of specific color difference values ​​in the color difference value of the macroblock of the frame to be detected is determined, and the specific color difference value corresponding to the color difference value is determined. The number of color difference values ​​is compared with the number threshold value corresponding to the color difference value; if the comparison results corresponding to all color difference values ​​are greater than the corresponding number threshold value, it is determined that the frame to be detected is a mosaic frame image. Because the color difference value of the frame to be detected is compared with a specific color difference threshold value to determine whether the frame to be detected is a mosaic frame, thereby improving the efficiency of detecting the mosaic frame.

[0022] The embodiments of the present inve...

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Abstract

The embodiments of the present invention relate to the technical field of image detection, and in particular to a method and device for detecting mosaics, so as to solve the problem of relatively low efficiency of current methods for detecting mosaics. The method in the embodiment of the present invention includes: for a color difference value of the macroblock of the frame to be detected, determining the number of specific color difference values ​​in the color difference value of the macroblock of the frame to be detected, and calculating the color difference The number of specific color difference values ​​corresponding to the value is compared with the number threshold value corresponding to the color difference value; if the comparison results corresponding to all color difference values ​​are greater than the corresponding number threshold value, it is determined that the frame to be detected is a mosaic frame image. Because the color difference value of the frame to be detected is compared with a specific color difference threshold value to determine whether the frame to be detected is a mosaic frame, thereby improving the efficiency of detecting the mosaic frame.

Description

technical field [0001] The invention relates to the technical field of image detection, in particular to a method and equipment for detecting mosaics. Background technique [0002] With the rapid development of digital TV systems, video defects such as block effects, blur and noise have become the main factors that reduce video quality. Mosaic is a special block effect. Sometimes when the audience is watching TV, they will find that there are some large continuous color blocks on the screen, accompanied by the sound of "click", which is a kind of mosaic defect. [0003] Digital video programs are produced by TV stations or other producers, and then broadcast and transmitted through wireless channels, cable or satellite TV, and finally viewers watch digital video programs on TV sets. Errors at any step in the transfer process can degrade the final quality of the video. The appearance of defects such as mosaics in digital video will directly affect the audience's understand...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/40G06T7/90
Inventor 周同董全武
Owner PEKING UNIV