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Method and device for restraining color noise

A noise suppression and limiting device technology, applied to the parts of color TV, color TV, TV system parts, etc.

Inactive Publication Date: 2006-04-05
MSTAR SEMICON INC
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a method and device for suppressing color noise, which adjusts its color saturation according to the brightness (Y) signal of each image pixel, so as to give it a lower brightness when the brightness is lower. Suppress the color noise of low brightness with high color saturation, and give it a higher color saturation when the brightness is high, so that the picture has richer colors

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  • Method and device for restraining color noise
  • Method and device for restraining color noise
  • Method and device for restraining color noise

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Embodiment Construction

[0035] In order to have a further understanding and understanding of the features, purposes and functions of the present invention, the detailed description is as follows with the accompanying drawings:

[0036] Since the present invention mainly adjusts the chroma corresponding to the pixel by weighting according to the brightness performance of the pixel on the digital image, when the brightness is low, the color saturation is lowered to suppress the color noise of the low brightness. And the weighting method, please refer to figure 1 , figure 1 It is a flowchart of weighting in the color noise suppression method of the preferred embodiment of the present invention. First, a weighting function is provided. The weighting function is related to a critical brightness, and the brightness of the pixel is used as a variable. This is step 101. Among them, the weighting function can be a linear linear equation.

[0037] Next, the critical brightness is determined on the coordinates wh...

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Abstract

The invention relates to a method and device for color noise reduction. Wherein, according to digital image pixel brightness, weighting and regulating the pixel to regulate color saturation degree. This invention can decreases color strength of low bright pixel, and improves the bad effect high color saturation or color noise.

Description

Technical field [0001] The present invention relates to a method and device for suppressing color noise at low brightness, and more particularly to a method and device for suppressing color noise for adjusting pixel chroma with weights according to pixel brightness. Background technique [0002] With the advent of the digital age, digital cameras have gradually replaced the use of traditional cameras, and the circulation of image information has gradually replaced traditional photos with digital images. Therefore, the quality of digital images is also increasingly demanded. [0003] Currently, digital images are based on pixels, and the color of each pixel is composed of three primary colors (R, G, B), and each pixel color has its brightness and chroma. The quality of digital images mainly depends on the brightness, contrast, and saturation of the displayed image. [0004] As for the existing digital image processing, the R, G, and B values ​​of each pixel of the digital image ar...

Claims

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Application Information

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IPC IPC(8): H04N5/21H04N9/77
Inventor 李维国陈衣凡
Owner MSTAR SEMICON INC