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Video de-noising method for Poisson, Gaussian and impulse mixed noises

A noise video and pulse noise technology, which is applied in the field of image and video information processing, can solve the problem of unsatisfactory denoising effect of mixed noise, and achieve obvious denoising effect and high quality denoising video

Active Publication Date: 2017-09-01
广东博科电子科技有限公司
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Problems solved by technology

[0014] Aiming at the problem that the traditional video denoising algorithm mainly deals with a single type of noise, but the mixed noise denoising effect is not ideal, the present invention discloses a video denoising method of mixing Poisson, Gaussian and impulse noise

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  • Video de-noising method for Poisson, Gaussian and impulse mixed noises
  • Video de-noising method for Poisson, Gaussian and impulse mixed noises
  • Video de-noising method for Poisson, Gaussian and impulse mixed noises

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Embodiment Construction

[0038] Attached below figure 1 , the present invention is described in detail:

[0039] A video denoising method that mixes Poisson, Gaussian and impulse noise provided in this embodiment includes the following steps:

[0040] Step 1: Divide each frame image of the noisy video into image blocks, and search for similar image blocks for each image block by a block matching method in the noisy video frame sequence. The specific method of dividing each frame image of noise video into image blocks is:

[0041] For noisy video frame sequence {I 1 ,I 2 ,...,I n} (n is the number of noisy video frames), divide each frame of image into image blocks of s×s pixel size, and the width of the overlapping area between image blocks is w o pixels. For each image block P, search for similar image blocks in the noisy video frame sequence by block matching method, and obtain m similar image blocks in each frame; for each similar image block, connect all its columns in turn to form a column...

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Abstract

The invention discloses a video de-noising method for Poisson, Gaussian and impulse mixed noises and belongs to the image processing field. The method includes the following steps that: each frame of image of a noise video is divided into image blocks, similar image blocks are searched in the frame sequence of the noise video for each image block through a matching method; Poisson-Gaussian mixed noise priors are constructed, a video de-noising model under a Poisson, Gaussian and impulse mixed noise environment is built; and the de-noising model is solved through using an optimization algorithm, and de-noised clear image blocks are obtained, and de-noised clear video images are generated based on the de-noised clear image blocks. A traditional video de-noising method is only used for a certain type of noises. The method of the invention can de-noise Poisson, Gaussian and impulse mixed noise videos, and therefore, with the method of the invention adopted, a video de-noising problem under a practical noise environment can be better solved. Compared with the traditional video de-noising method, the method of the invention can obtain higher-quality video de-noised images.

Description

[0001] Technical field: [0002] The invention mainly relates to the field of image and video information processing, in particular to a video denoising method mixed with Poisson, Gaussian and impulse noise. [0003] Background technique: [0004] Although digital cameras and digital sensors have developed rapidly in recent years, video data is often affected by various noises during information acquisition and transmission. Noise in video signals can cause visual discomfort and affect the performance of some subsequent video processing algorithms, including feature extraction, object detection, and motion tracking [1]. Therefore, video denoising is still an active research direction, and it has become more important with the extensive use of web cameras and mobile phone cameras. In order to recover the original information from the noise pollution and degraded video data, many scholars have designed a variety of video denoising algorithms to solve this problem [2-4]. Due to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
CPCG06T2207/10016G06T2207/20021G06T5/70
Inventor 不公告发明人
Owner 广东博科电子科技有限公司
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