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Image processing method and device of spotted noise

An image processing and noise technology, applied in the field of image processing, can solve problems such as point noise processing, and achieve the effect of retaining detail edge information, eliminating noise, and improving image quality

Active Publication Date: 2014-04-30
SOLOMON SYSTECH SHENZHEN LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

These point noises cannot be processed in the prior art

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  • Image processing method and device of spotted noise
  • Image processing method and device of spotted noise
  • Image processing method and device of spotted noise

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Embodiment Construction

[0069] The present invention will be described in detail below in conjunction with various embodiments shown in the drawings. However, these embodiments do not limit the present invention, and any structural, method, or functional changes made by those skilled in the art according to these embodiments are included in the protection scope of the present invention.

[0070] ginseng figure 1 Shown is the flow chart of the image processing method of point noise of the present invention, in this embodiment, the image processing method of point noise comprises the following steps:

[0071]S1. Detect whether the pixel is point noise;

[0072] S2. If yes, eliminate point noise.

[0073] Wherein, the above-mentioned step S1 is specifically:

[0074] S11, detecting the periodicity of pixels;

[0075] S12. Detect the local energy of the pixel;

[0076] S13. Detect edge details of pixels;

[0077] S14. Detect color information of pixels.

[0078] Only when the pixels to be detected...

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Abstract

The invention provides an image processing method of spotted noise, which comprises the following steps of: S1, detecting whether a pixel point is the spotted noise; and S2, if yes, eliminating the spotted noise, wherein the step S1 specifically comprises the procedures of: S11, detecting periodicity of the pixel point, S12, detecting local energy of the pixel point, S14, detecting edge details of the pixel point, and S14, detecting color information of the pixel point. According to the image processing method and device of the spotted noise, provided by the invention, image defects caused by imperfect brightness and chromaticity separation are made up, and a brightness signal with better quality is obtained. Detail edge information of the original image is preserved, the spotted noise is effectively eliminated, signal to noise ratio is increased, and image quality is improved.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image processing method and device for point noise. Background technique [0002] In the technical field of image processing, an image signal is generally composed of a luminance carrier and a chrominance carrier, and the two are transmitted separately. However, some chroma carriers are not separated from the luminance carrier or are difficult to separate from the luminance carrier, so that there will be problems with the display of the luminance carrier at the receiving end. The chroma carrier remains in the luminance carrier and causes interference. The point noise left at the (high frequency) part. [0003] The chroma carrier can be calculated by the formula Chroma=u*sin(2πft)+cos(2πft), where f is the frequency of the chroma carrier, PAL TV is 4.43361875MHz, NTSC TV is 3.579545MHz, so these dots The noise presents a certain periodicity, which is manifest...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/78H04N5/21
Inventor 沈操艾瑞克·威斯特李蒙
Owner SOLOMON SYSTECH SHENZHEN LTD