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Image adjusting method and device for television broadcast technology

A technology for image adjustment and TV broadcasting, applied in color TV parts, TV system parts, TV and other directions, can solve problems such as reducing user experience, user visual discomfort, affecting image quality, etc. The effect of reducing visual discomfort

Inactive Publication Date: 2013-01-02
新奇点智能科技集团有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] In the current analog TV broadcasting technology, when the signal-to-noise ratio (SNR, Signal to Noise Ratio) of the signal is low, there will be a lot of noise in the image, or some obvious white stripes, or light and dark flickering, which seriously Affect image quality, bring visual discomfort to users, and reduce user experience
For this problem, there is no effective solution in the prior art

Method used

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  • Image adjusting method and device for television broadcast technology
  • Image adjusting method and device for television broadcast technology
  • Image adjusting method and device for television broadcast technology

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Embodiment Construction

[0021] Before introducing the solution of the present invention, a concept is firstly introduced, that is, contrast. Contrast refers to how far the peak white is from the peak black in the image. If the peak white is far from the peak black, the image has high contrast. Images with high contrast look sharp. If the peak Whites that are very close to peak black indicate that the image has low contrast, and images with low contrast will look gray and the difference between white and black cannot be clearly distinguished.

[0022] Aiming at the problems existing in the prior art, the present invention proposes an image adjustment scheme in TV broadcasting technology, which can adjust the contrast adaptively, so that when the signal-to-noise ratio is low, the noise can be covered up by reducing the contrast And white stripes, and reduce the degree of light and dark flicker, thereby reducing the user's visual discomfort and improving user experience.

[0023] In order to make the t...

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Abstract

The invention provides an image adjusting method and device for a television broadcast technology. The method comprises the following steps of: respectively determining the central position of the line synchronizing pulse of each line specific to an input negative composite video broadcast signal (CVBS); computing the signal-to-noise ratio of the negative CVBS of each line according to the determined central position of the line synchronizing pulse of each line; inquiring a pre-stored table to determine a contrast adjusting factor corresponding to the signal-to-noise ratio of the negative CVBS of each line; and converting the negative CVBS into a positive CVBS and adjusting the contrast of the positive CVBS of each line according to the determined contrast adjusting factor. By applying the scheme provided by the invention, noisy points and white strips can be covered, the bright and dark twinkling degree can be lowered, the visional discomfort caused by sudden change of image brightness is effectively reduced, and user experience is improved.

Description

technical field [0001] The invention relates to television broadcasting technology, in particular to an image adjustment method and device in the television broadcasting technology. Background technique [0002] In the current analog TV broadcasting technology, when the signal-to-noise ratio (SNR, Signal to Noise Ratio) of the signal is low, there will be a lot of noise in the image, or some obvious white stripes, or light and dark flickering, which seriously Affect image quality, bring visual discomfort to users, and reduce user experience. For this problem, there is no effective solution in the prior art. Contents of the invention [0003] In view of this, the technical problem to be solved by the present invention is to provide an image adjustment method in television broadcasting technology, which can reduce the user's visual discomfort and improve user experience. [0004] Another technical problem to be solved by the present invention is to provide an image adjustm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/57
Inventor 张辉王西强杨艳
Owner 新奇点智能科技集团有限公司
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