Color noise reducing method, device and image processing system

A noise and color technology, applied in the field of image processing, can solve problems such as high complexity, color aliasing, and image saturation drop

Active Publication Date: 2015-07-01
SPREADTRUM COMM (SHANGHAI) CO LTD
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Problems solved by technology

[0009] The problem solved by the present invention is that when removing color noise from an image, it is easy to affect the brightness information of the image, which will cause blurred image brightness information, color aliasing, and a decrease in image saturation, and the problem of high complexity

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  • Color noise reducing method, device and image processing system
  • Color noise reducing method, device and image processing system
  • Color noise reducing method, device and image processing system

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Embodiment Construction

[0077] In the prior art, when color noise is removed from an image, the brightness information of the image is easily affected, resulting in fuzzy brightness information of the image, color aliasing, and a decrease in saturation of the image, and the problem of high complexity.

[0078] In order to solve the above problems, the technical solution of the present invention provides a method for removing color noise.

[0079] The method can realize the removal of color noise in the image data of the U and V channels of the image. The image needs to be in YUV format. If the image is in other color formats, such as RGB format, etc., the color of the prior art can be used. The spatial conversion method converts the image to YUV format.

[0080] For an image in YUV format, for each pixel in the image, each pixel corresponds to three components, namely Y component, U component and V component, and each component corresponds to a component value used to indicate the The size of the co...

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Abstract

Disclosed is a color noise reducing method, device and image processing system. The method comprises, based on the Y, U and V component values of a pixel point to be denoised with every pixel point, determining the range coefficient corresponding to every pixel point, wherein the pixel point to be denoised is in the center of a sliding window; based on the spatial distance between every pixel point in the sliding window and the pixel point to be denoised, determining the spatial coefficient corresponding to every pixel point; based on the range coefficient and the spatial coefficient, which correspond to every pixel point, obtaining the weighting coefficient corresponding to every pixel point; based on the weighting coefficient corresponding to every pixel point, performing color noise reducing treatment on the U component and the V component of the pixel point to be denoised. The color noise reducing method can reduce the problem of color mixing and saturation reduction generated during color noise reduction and avoid influence on the brightness information of images and is low in complexity and easy to implement.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a method, device and image processing system for removing color noise. Background technique [0002] Image denoising is a widely used technology in image processing. The purpose of image denoising is to improve the signal-to-noise ratio of the image and highlight the desired features of the image. [0003] At present, typical image sensors include CCD and CMOS. When collecting images based on image sensors, the images are easily affected by various factors during the process of acquisition and transmission, so that the images collected by image sensors often contain noise. Image. [0004] Because the noise signal and the image signal in the noise-containing image are mixed together, the image has problems such as inconspicuous features and low definition. Therefore, it is usually necessary to perform denoising processing on the image collected by the image sensor to improve the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00
Inventor 张乐朱洪波彭晓峰刘阳林福辉
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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