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Image processing method and device

An image processing device and image processing technology, which are applied in the field of image processing, can solve problems such as easily amplified noise and blurred image edges, and achieve the effects of suppressing noise amplification, enhancing image edges, and improving visual perception quality

Active Publication Date: 2015-12-09
SHANGHAI BEIZHUO INTELLIGENT TECH CO LTD
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Problems solved by technology

[0007] The invention solves the problem that it is easy to amplify the noise when enhancing the edge of the image, and it is easy to blur the edge of the image when reducing the noise

Method used

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Embodiment Construction

[0056] In the process of denoising and enhancing images in the prior art, it is difficult to find and separate all real edges from images containing noise, and it is impossible to accurately distinguish high-frequency regions from low-frequency regions. When enhancing image edges, it is easy to Amplify the noise, or when denoising, it is easy to blur the edges of the image.

[0057] In order to solve the above problems, the technical solution of the present invention provides an image processing method, in which an adaptive image noise reduction and enhancement method is provided, based on the edge intensity direction of the pixel points of the image, directional Edge enhancement and directional edge noise reduction, and then get the final image processing results.

[0058] The image processing method provided by the technical solution of the present invention can be applied to the processing of noise reduction and enhancement of YUV, RGB and CMYK multi-channel images. In the ...

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Abstract

The invention provides an image processing method and a device. The method comprises a step of obtaining the edge intensity value of each edge direction of a pixel to be processed to determine the enhancement value of the pixel to be processed, wherein the enhancement value is associated with an edge intensity maximum value and a corresponding gain value, a step of determining the noise reduction value of the pixel to be processed based on at least one filtering result in a first pixel set and a second pixel set, wherein the first pixel set is the set of pixels on the minimum edge direction of the pixel to be processed in a preset area, and the second pixel set is the set of pixels on the orthogonal direction of the maximum edge direction of the pixel to be processed in the preset area, a step of combining the enhancement value of the pixel to be processed and the noise reduction value to determine the pixel value to the pixel to be processed after processing. The noise reduction and enhancement processing of an image can be realized at the same time, while the image edge is enhanced, the noise amplification is inhibited, the visual sensory quality of the image is effectively improved, and the method is simple.

Description

technical field [0001] The present invention relates to the field of image processing, in particular to an image processing method and device. Background technique [0002] With the rapid development of multimedia technology, digital image processing has been widely used in various fields. Since the image is easily affected by various factors in the process of acquisition, transmission, reception and processing, the image collected by the image sensor Usually it is an image containing noise, and the visual quality of the image usually decreases, and the visual quality of the image can be effectively improved through digital image processing. [0003] Since the noise signal and the image signal in the image containing noise are mixed together, the image has problems such as blurred edges, unclear features, unclear details, and low definition. Therefore, it is usually necessary to process the image collected by the image sensor. In order to improve the display effect of image...

Claims

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Application Information

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IPC IPC(8): G06T5/00
Inventor 黄鹏成喜民刘屹
Owner SHANGHAI BEIZHUO INTELLIGENT TECH CO LTD
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