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Method of detecting mosaic frame, and device of detecting mosaic frame

A mosaic and detection technology, applied in TV, electrical components, image communication, etc., can solve the problems of low detection efficiency, high false detection rate and false detection rate

Active Publication Date: 2014-10-22
PEKING UNIV +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a method and device for detecting mosaic frames, which are used to solve the problems of low detection efficiency and high false detection rate and false detection rate in the existing method of using manpower to detect mosaic frames in video programs

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  • Method of detecting mosaic frame, and device of detecting mosaic frame
  • Method of detecting mosaic frame, and device of detecting mosaic frame
  • Method of detecting mosaic frame, and device of detecting mosaic frame

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Embodiment Construction

[0022] Aiming at the problems of low detection efficiency and high false detection rate and high false detection rate in the existing method of using manpower to detect mosaic frames in video programs, an embodiment of the present invention provides a method for detecting mosaic frames, and the method flow is as follows figure 1 As shown, the specific execution steps are as follows:

[0023] S10: Obtain video frames included in the video program, and execute S11-S13 for each video frame.

[0024] A video program often contains multiple video frames, and the following detection steps need to be performed for each video frame.

[0025] S11: Taking a first set number of adjacent macroblocks from the current video frame in a set order as a macroblock group to be detected, each macroblock includes a second set number of pixel units.

[0026] Each video frame is composed of several pixel units, each video frame can be divided into multiple macroblocks, each macroblock can include 4...

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Abstract

The present invention discloses a method of detecting a mosaic frame, and a device of detecting the mosaic frame. The method comprises the steps of obtaining the video frames contained in a video program, and for each video frame, carrying out the following operations of selecting a first set number of adjacent macro blocks orderly from the current video frame, according to a set sequence, as to-be-detected macro block sets; calculating the parameter value of at least one color parameter of each to-be-detected macro block set, and selecting a dubious macro block set corresponding to each color parameter from the to-be-detected macro block set in accordance with the calculated parameter value of each color parameter of each to-be-detected macro block set and the threshold value of the dubious macro block set corresponding to the color parameter, wherein the color parameters are obtained by the setting components of a color space; detecting whether the current video frame is the mosaic frame, according to the number of the dubious macro block sets corresponding to each color parameter in the current video frame and the threshold value of the mosaic frame corresponding to the color parameter. The scheme is high in detection efficiency, and low in misdetection rate.

Description

technical field [0001] The invention relates to the technical field of computer information processing, in particular to a method and device for detecting mosaic frames. Background technique [0002] The working process of the digital TV system is very complicated. After the video programs produced by TV stations or other manufacturers pass various tests, they are broadcast and transmitted through wireless channels, cable, satellite, etc., and finally the audience can watch the video programs on the TV. . [0003] Among the various detections of video programs, a very important one is to detect mosaic frames, because the mosaic frames in video programs will greatly reduce the quality of video programs. There are two important measurement parameters for detecting mosaic frames in video programs, namely false detection rate and false detection rate. The ratio of the false detection rate should be low enough to ensure that the non-mosaic frame is not misjudged as a mosaic fra...

Claims

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Application Information

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IPC IPC(8): H04N7/64H04N19/89
Inventor 周同董全武
Owner PEKING UNIV