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Video signal processing method and device

A technology of video signal and processing method, which is applied in the field of image processing, and can solve problems such as deterioration of video image quality and display, and achieve the effect of improving image display quality and avoiding cross-interference of bright colors

Inactive Publication Date: 2014-05-21
ZHEJIANG DAHUA TECH CO LTD
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Problems solved by technology

[0005] The purpose of the present invention is to provide a video signal processing method and device to solve the problem of video image quality display degradation caused by the existing video signal time base correction

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  • Video signal processing method and device
  • Video signal processing method and device
  • Video signal processing method and device

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Embodiment Construction

[0021] In order to avoid cross-interference between bright colors of images caused by time base correction of digital video signals before bright color separation, an embodiment of the present invention provides a video signal processing solution. In this solution, the digital video signal is first separated from the bright color, and then the time base correction processing is performed on the luminance signal and the chrominance signal after the separation of the bright color.

[0022] The technical solutions provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] An embodiment of the present invention provides a video signal processing method, the implementation manner of which is as follows figure 1 shown, including the following operations:

[0024] Step 100: Separate the current line digital video signal to obtain a luminance signal, a chrominance signal and a horizontal synchronization...

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Abstract

The invention discloses a video signal processing method and a device. The method comprises steps that: separation for a present digital video signal is carried out to acquire a brightness signal, a chrominance signal and a line synchronization signal; length deviation of the present line is determined according to the line synchronization signal; time base correction for the present brightness signal and the chrominance signal is respectively carried out according to the length deviation. According to the device and the method, brightness color separation for the digital video signal is carried out, time base correction is respectively carried out for the present brightness signal and the chrominance signal which are acquired through brightness color separation, phase alignment of the brightness signal and the chrominance signal after time base correction is guaranteed, brightness color cross interference is avoided, and thereby image display quality is improved.

Description

technical field [0001] The present invention relates to the technical field of image processing, and in particular, to a video signal processing method and device. Background technique [0002] In order to realize digital video playback, it is necessary to convert analog video signals into digital video signals. Specifically, the digital video signals are obtained by sampling the analog video signals of each line in each frame or field of images. [0003] Ideally, the number of samples of the analog video signal per line is constant. However, due to the existence of time base error, the sampling times of one line of analog video signal may be different from the standard sampling times. It is embodied in the change of the clock phase of the sampling signal of the A / D (analog / digital) converter relative to the phase of the horizontal synchronization signal, that is, "phase slip". The intuitive manifestation of this phenomenon is that the image appears distorted, burrs and o...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/77
Inventor 李中峰张兴明傅利泉朱江明吴军吴坚
Owner ZHEJIANG DAHUA TECH CO LTD
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