Image processing device and method

An image processing device and image processing technology, applied in image communication, TV, color TV components, etc., can solve problems such as distortion, dynamic image noise interference, and misjudgment
CN101808190BActive Publication Date: 2013-01-30REALTEK SEMICON CORP
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
REALTEK SEMICON CORP
Publication Date
2013-01-30

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Abstract

The invention provides an image processing device and an image processing method. In the device and the method, whether the feature of each pixel in a current image is in a dynamic state or a static state is judged according to a boundary change condition between the current image and a previous image, and pixel differences corresponding to pixels in the static state in the current image are added to acquire the noise intensity of the current image. In addition, the device comprises a pixel difference calculator, a boundary processing unit and a noise level processing unit, wherein the pixel difference calculator is used for calculating the pixel differences among pixels corresponding to each position on the current image and the previous image; the boundary processing unit is used for processing boundary change around each pixel in the current image; and the noise level processing unit is used for calculating to acquire the noise intensity of the current image on the basis of the boundary change judged by the boundary processing unit.
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Description

technical field

[0001] The present invention relates to a device for judging noise intensity, in particular to a device for judging the noise intensity in image data. Background technique

[0002] With the rapid evolution of video processing technology, the quality requirements for video content (Video Content) are getting higher and higher. High-quality, high-resolution video content has been widely used in various image display devices, such as: High Definition Television (HDTV) or Personal Computer Liquid Crystal Screen (LCD). Video content usually includes multiple frames (Frame) or field (Field), in the process of video processing or video transmission, some frames or fields may be affected by noise and change (for example: some pixel values (Pixel) changes), and on a high-resolution display device, it is particularly sensitive to noise on the video content, in other words, when the video content is disturbed by noise, it may be displayed on a high-resolution display d...

Claims

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