Video color bar detecting method and device

A color bar and video technology, applied in the field of image processing, can solve the problem of low accuracy

Inactive Publication Date: 2010-08-25
CHINA DIGITAL VIDEO BEIJING
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The embodiment of the present invention provides a video color bar detection method, in order to solve the problem of low detection accuracy

Method used

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  • Video color bar detecting method and device
  • Video color bar detecting method and device

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Embodiment Construction

[0019] In order to solve the problem of low detection accuracy, the first embodiment of the present invention is a video color bar detection method. In this method, by determining the boundary lines of each area of ​​the video frame to be detected, each boundary line and scanning line are obtained. The boundary points obtained by the intersection, according to the analysis results of the position information of the boundary points on the scanning line, meet the preset color bar characteristics, and determine that the video frame to be detected is a color bar, so that it is unnecessary to analyze the chromaticity index of the color bar signal, avoiding the Due to the difference in hardware, the color bar signals generated by various sources have different degrees of difference in various indicators of signal chromaticity, which brings about the problem of low detection accuracy.

[0020] The basic flow of the method is shown in Figure 1, including:

[0021] Step 101: Perform bo...

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Abstract

The invention discloses a video color bar detecting method and a video color bar detecting device. In order to solve the problem of low accuracy in color bar detection, the method disclosed by the invention comprises the following steps of: performing boundary search on a video frame to be detected so as to determine boundary lines of each area of the video frame to be detected; acquiring boundary points obtained by intersecting each boundary line with the scanning line by taking a straight line which intersects with each boundary line as a scanning line; and determining the video frame to be detected to be the color bar based on that an analysis result of the position information of boundary points on the scanning line is in accordance with predetermined color bar characteristics. Therefore, by determining the boundary line and determining the boundary point obtained by intersecting the boundary line with the scanning line by using a boundary search algorithm, and determining the video frame to be detected as the color bar based on that the analysis result of the boundary points on the scanning line is in accordance with the predetermined color bar characteristics, high accuracy of the detection is ensured.

Description

technical field [0001] The invention belongs to the field of image processing, in particular to a video color bar detection method and device. Background technique [0002] The visualized color bar provides an intuitive and quick way to make it convenient for TV workers to understand the quality status of the system or equipment operation. Whether it is in TV program production, broadcasting center, or TV launch station, cable transmission station, or even in the production or maintenance department of TV equipment, it is widely used. In fact, every morning, on most TV stations and most TV program channels, before the official program is broadcast, this kind of color bar chart with similar function will be played. The purpose is to use this color bar chart to observe and evaluate the entire TV program. The quality of the system (including broadcasting system, sending / transmitting system and receiving display system), so as to find and solve problems in time, and prepare for...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/64H04N17/02
Inventor 陈宏周亮王召
Owner CHINA DIGITAL VIDEO BEIJING
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