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Encoding and decoding device and method for video image quality enhancement

A technology for video image and quality enhancement, applied in image enhancement, image communication, image data processing and other directions, can solve the problem of not considering the efficiency of source codec and other issues, and achieve the goal of reducing computational complexity, low computational cost, and improving video quality. Effect

Active Publication Date: 2008-09-24
ZTE CORP
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Problems solved by technology

[0011] However, the above methods are mainly from the application point of view, through pre-processing or post-processing technology to try to make the original poor quality video images more pleasing to the eye, but they do not consider the efficiency of source codec

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  • Encoding and decoding device and method for video image quality enhancement
  • Encoding and decoding device and method for video image quality enhancement
  • Encoding and decoding device and method for video image quality enhancement

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Embodiment Construction

[0063] The present invention determines the corresponding enhancement processing method after analyzing the video quality of the video image with poor quality, and then analyzes the coding efficiency of the enhancement processing method, adopts the corresponding codec according to the coding efficiency, and considers the system while realizing the quality improvement. processing efficiency.

[0064] Such as figure 1 As shown, the coding method of video image quality enhancement of the present invention comprises the following steps:

[0065] A video model establishment step, establishing a video model for enhanced processing;

[0066] In the video scene segmentation step, the video sequences belonging to the same scene in the video sequence are combined as an enhancement processing group; the subsequent processing steps all use the enhancement processing group as the basic unit of processing.

[0067] A video quality analysis step for determining the video image quality of t...

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Abstract

The invention discloses a coding and decoding device and a coding and decoding method used for enhancing the quality of video images, wherein, the coding method includes: step A, enhancement processing technology is selected according to the quality of the video image and different image enhancement technologies are applied in an enhancement processing group for the enhancement processing; step B, after the enhancement processing of the image quality, if the efficiency of an encoder increases, the basic layer of the encoder codes the enhanced enhancement processing group directly; otherwise, the original image enhancement processing group is coded on the basic layer and on the enhancing layer, the quality residual of the enhanced enhancement processing group and the original enhancement processing group and the energy minimization expression of the quality residual are coded. The device and the method of the invention can effectively improve the video quality and simultaneously increasing the coding efficiency.

Description

technical field [0001] The invention relates to image information processing, in particular to a codec device and a codec method for enhancing video image quality. Background technique [0002] Video coding technology has gone through three stages: bottom layer, middle layer and high layer coding. Traditional compression coding is based on data statistics, using a statistical probability model to describe the source, eliminating the related redundancy of image data, which has serious limitations in low-rate video coding; later, according to human visual, physiological and psychological characteristics research In the extension of the results, content-based coding is proposed, which removes the redundancy of the image / video signal content, which is called the middle layer compression coding method; and the semantics-based (Semantics-based) method is called high-level compression coding method. [0003] In recent years, with the continuous development of streaming media appl...

Claims

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Application Information

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IPC IPC(8): H04N7/26G06T5/00H04N19/105H04N19/124H04N19/179H04N19/51H04N19/91
Inventor 金辉
Owner ZTE CORP
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