A Video Noise Intensity Detection Method

A noise intensity and intensity detection technology, which is applied in the direction of TV, color TV, color TV parts, etc., can solve the problem of not making full use of video information, achieve timely and effective detection, simple calculation, and strong detection stability Effect

Inactive Publication Date: 2017-04-19
南京三迭纪文化传媒有限公司
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  • Description
  • Claims
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Problems solved by technology

In fact, most of the current methods are image-based detection (estimation) methods, which do not make full use of video information.

Method used

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  • A Video Noise Intensity Detection Method
  • A Video Noise Intensity Detection Method
  • A Video Noise Intensity Detection Method

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Embodiment Construction

[0042] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0043] The flow chart of the method for video noise intensity detection in the present invention is as figure 1 Shown, the main steps of the method of the present invention are as follows:

[0044] Step 1, this is the initial state, get a frame of image F from the video capture device 0 , for F 0 Do denoising processing, and the result is recorded as F' 0 , the noise detection count Noise_CNT is initialized to 0;

[0045] Step 2, get a frame of image F from the video capture device k , the k value is greater than 0;

[0046] Step 3, the image is divided into blocks, assuming that the image height is H, the width is W, the height of each noise intensity detection macroblock is h, and the width is w, then the image is divided into M*N noise intensity detection macroblocks, Wherein M=W / w, N=H / h;

[0047] Step 4, detect the macroblock for each noi...

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Abstract

The invention discloses a method for detecting video noise intensity. In detail, the method includes the steps that a current image frame is obtained, and noise removal and caching are performed on the image frame; a next image frame is obtained and partitioned according to blocks, and after partitioning, each block is recorded as a noise intensity detecting macro block; the statistics of block noise intensity are estimated; a column diagram where estimated values are distributed is obtained; the noise intensity value of the current image frame is calculated; the next image frame is processed. The method for detecting the video noise intensity is clear in hierarchical structure, high in detecting stability and capable of accurately and effectively detecting the video noise intensity in time, and calculation is easy.

Description

technical field [0001] The invention discloses a video noise intensity detection method and relates to the technical field of image quality evaluation. Background technique [0002] At present, the application of video is more and more extensive, but it is affected by various factors in the acquisition and transmission of video, such as the environmental conditions in acquisition, the quality of the sensor itself, the interference of the channel used in the transmission process, etc., the video will be affected by different factors. degree and different forms of noise pollution, thereby affecting the quality and visual quality of the video, as well as its subsequent use. Therefore, it is of great engineering value to establish a set of reliable and practical noise intensity detection methods. [0003] Among the currently disclosed methods, "A Video Noise Detection Method Based on Improved Four-Direction Operator" with application number 201210428662.X proposes a simple dete...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N17/00H04N5/14
Inventor 权海平姜振宇姚小冬张宝中
Owner 南京三迭纪文化传媒有限公司
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