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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 misjudgment and smearing

Active Publication Date: 2011-09-21
REALTEK SEMICON CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in some special cases, for example: when the object in the image moves back and forth quickly, the moving object may be regarded as stationary through the calculation method of MAD, so there will be misjudgment.
In the case of misjudgment, pixel mixing of the image will cause smearing

Method used

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Embodiment Construction

[0031] see figure 1 , figure 1 A schematic diagram of an embodiment of the image processing device of the present invention is shown. The image processing device 100 includes: a pixel buffer unit 101 , a pixel difference calculation unit 102 , a movement degree determination unit 103 , a mixed value determination unit 104 , and an output unit 105 .

[0032] The pixel buffer unit 101 is used to receive an input image and store a current image 11 and a previous image 12 in a sampling window, wherein the current image 11 and the previous image 12 respectively have a plurality of pixels (Pixels). Each pixel has a corresponding pixel value, and the pixel value includes a brightness value (Luma) and a chrominance value (Chroma).

[0033] The pixel difference calculation unit 102 receives the current image 11 and the previous image 12, and the pixel difference calculation unit 102 calculates the pixel difference of each pixel according to the pixel values ​​of the pixels at the same...

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Abstract

The invention provides an image processing device and method. According to the invention, the blending value can be determined according to the relationship between the pixel difference and neighboring pixel difference of each pixel between a present image and a previous image. In addition, the image processing device comprises a pixel buffer unit for storing the previous image and the present image, a pixel difference calculation unit for calculating a plurality of pixel differences, a moving degree determination unit coupled with the pixel different calculation unit and used for determiningwhether a pixel is a moving pixel or a static pixel, a blending value determination unit coupled with the moving degree determination unit and used for determining a new blending value when the pixelis a static pixel, and an output unit coupled with the blending value determination unit and used for weighting and summing the pixels of the present image and the previous image in the same positionaccording to the blending value so as to obtain an output image.

Description

technical field [0001] The present invention relates to an image processing device, in particular to an image processing device that determines a blending value by judging the degree of image movement. Background technique [0002] A video content usually includes multiple frames (Frame) or field (Field), and these frames (or Field) are transmitted in a continuous sequence, and in the process of transmission, if the video content With moving objects, there will be a pixel difference between the current frame and the previous frame, that is to say, between the current frame and the previous frame, the pixel value of the pixel (pixel) at the same position will be different, because the same pixel What was part of the object in the previous frame may become part of the background in the current frame, so the error is the pixel difference between the object and the background. [0003] The technology widely used today is to judge whether a video content has the characteristics ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/262H04N5/14
Inventor 喻仲平李承翰
Owner REALTEK SEMICON CORP