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Image color noise reduction method and system

A color noise, image technology, applied in the field of image processing, can solve the problems of color overflow, affected area, image blur, etc.

Active Publication Date: 2021-05-18
湖南兴芯微电子科技有限公司
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  • Claims
  • Application Information

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Problems solved by technology

Since the distribution of color noise is uneven, and the amplitude of its brightness is also random, uniform filtering of the entire image will lead to blurring of the image, especially at the edge of the object, which will cause color overflow. affect adjacent areas

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  • Image color noise reduction method and system
  • Image color noise reduction method and system

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Embodiment Construction

[0070] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0071] see figure 1 , which is a flowchart of a method for image color noise reduction in an embodiment of the present invention, comprising the following steps:

[0072] S1: Obtain the RGB parameters of each pixel of the image to be denoised;

[0073] S2: converting the RGB parameters of each pixel into YUV parameters of each pixel;

[0074] S3: Obtain the Y channel parameter in the YUV parameter of the current pixel point, perform filtering processing on t...

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Abstract

The invention provides a method and a system for reducing color noise of an image. The method for reducing the color noise of the image comprises the following steps of: converting RGB parameters of each pixel point into YUV parameters of each pixel point; obtaining a Y channel parameter of the current pixel point, and carrying out filtering processing to obtain a UV channel first control parameter; obtaining a UV channel second control parameter corresponding to each pixel point of the to-be-denoised image; calculating a UV channel control parameter of each pixel point; carrying out pixel domain division on each pixel point, respectively calculating the sum of absolute difference values of a U channel and a V channel of a current pixel domain and an adjacent pixel domain, and respectively carrying out smoothing processing to obtain a corresponding U channel weighted weight and a V channel weighted weight; filtering to obtain a corresponding U channel noise reduction result and a V channel noise reduction result; and obtaining filtered YUV parameters according to the U channel noise reduction result and the V channel noise reduction result of each pixel point, and converting the filtered YUV parameters into RGB parameters.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a method and system for image color noise reduction. Background technique [0002] Color noise has a great impact on image quality, especially in low-light environments, which seriously affects the sensory effect of images or videos. In order to ensure the imaging quality of the image, it is necessary to suppress the color noise in the image. Since the distribution of color noise is uneven, and the amplitude of its brightness is also random, uniform filtering of the entire image will lead to blurring of the image, especially at the edge of the object, which will cause color overflow. affect adjacent areas. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings and deficiencies in the prior art, and provide a method and system for image color noise reduction, which can filter out image color noise. [0004] One embodim...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T5/20
CPCG06T5/20G06T2207/10024G06T5/70
Inventor 童飞杨珊周宇席晨余志强杨海东李剑新
Owner 湖南兴芯微电子科技有限公司
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