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Image noise reduction processing method and system

A technology of image noise reduction and processing method, which is applied in image data processing, image enhancement, instruments, etc., and can solve the problems of poor adaptability, low accuracy of image noise reduction processing method, and poor effect.

Active Publication Date: 2015-09-16
SUZHOU KEDA TECH
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Problems solved by technology

[0004] For this reason, the technical problem to be solved by the present invention lies in the problems of low accuracy, poor effect and poor adaptability of the image noise reduction processing method in the prior art, thus proposing a method that can reduce image noise while maintaining image details as much as possible , Image noise reduction processing method and device for improving image visual effect and preventing image blur

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  • Image noise reduction processing method and system

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Embodiment approach

[0040] A specific implementation of the image noise reduction processing method of the present invention is provided below, including the steps:

[0041] (1) Establish a direction template according to the center point, and then calculate the weight deviation according to the direction template.

[0042] In this step (1), the direction templates include 8, such as figure 1 Eight 5×5 templates of the image noise reduction processing method provided by the present invention are given, with the central point as the symmetrical center, and from left to right and from top to bottom, they are horizontal templates, left oblique templates, vertical templates, respectively. Vertical direction template, right oblique direction template, left upper direction template, left lower direction template, right upper direction template, right lower direction template. The size of the direction templates is 5*5 pixels, and each direction template includes 5 effective points, and the effective p...

Embodiment 2

[0060] A specific implementation of the image noise reduction processing system of the present invention is provided below, as figure 2 As shown, the system structure corresponding to the image noise reduction processing method described in the above-mentioned embodiment 1 is given. An image noise reduction processing system 60, comprising:

[0061] Image input unit 601: input the original image as the image to be processed;

[0062] Weight deviation calculation unit 602: establish a direction template according to the center point and calculate the weight deviation;

[0063] Adaptive direction determination unit 603: used to calculate the weight deviation mean value and decision factor:

[0064] Adaptive weight mean calculation unit 604: calculate the weight filter mean according to the above results;

[0065] Image output unit 605: output the enhanced image.

[0066] The image noise reduction system 60 described in this embodiment can be realized by the device system 10...

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Abstract

The invention provides a method for image noise reduction processing. The method for the image noise reduction processing comprises the following steps: a directional template is established and weight deviation is calculated according to the directional template; a weight deviation mean value is calculated according to the weight deviation; a determinative factor is calculated according to the weight deviation mean value; a weight filtering mean value is calculated according to the result and output as a strengthened image. According to the technical scheme, noise reduction of the image is achieved in a self-adaptive mode through consideration of directional information and deviation information. Meanwhile, image details can be well kept, the visual effect of the image can be improved in a self-adaptive mode, so that the influence by the noise is reduced to a certain extent and the method for the image noise reduction processing and the system for the image noise reduction processing are used for the noise reduction of video images.

Description

technical field [0001] The invention relates to an image noise reduction processing method, in particular to an image noise reduction processing method and device. Background technique [0002] Because images can directly give people visual information, the application of image technology is becoming more and more extensive. However, due to factors such as equipment, illumination, gain, etc., the displayed image often has noise, especially in low-light conditions, the image noise is more obvious. This degrades the image quality, affects the visual effect of the image, and thus affects the display effect of video image products. In order to improve the visual effect of human eyes on such images and facilitate other subsequent processing, it is necessary to perform noise reduction processing on such noisy images. Image noise reduction is usually also a preprocessing process for various image analysis and processing. At present, many image denoising techniques or methods hav...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T5/00
Inventor 李仁杰陈卫东曹李军
Owner SUZHOU KEDA TECH
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