中国邮电高校学报(英文)

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Pre-processing for video coding with rate-distortion optimization decision

齐轶; 杜世培; 黄永贵; 齐洪钢   

  • 收稿日期:2005-09-26 修回日期:1900-01-01 出版日期:2006-11-23
  • 通讯作者: 齐轶

Pre-processing for video coding with rate-distortion optimization decision

QI Yi; HUANG Yong-gui; QI Hong-gang   

  1. College of computer science and engineering, Guizhou University, Guiyang 550003, China
  • Received:2005-09-26 Revised:1900-01-01 Online:2006-11-23
  • Contact: QI Yi

关键词:

Abstract: This paper proposes an adaptive video pre-processing algorithm for video coding. This algorithm works on the original image before intra- or inter-prediction. It adopts Gaussian filter to remove noise and insignificant features existing in images of video. Detection and restoration of edges are followed to restore the edges which are excessively filtered out in filtered images. Rate-Distortion Optimization (RDO) is employed to decide adaptively whether a processed block or a unprocessed block is coded into bit-streams doe more efficient coding. Our experiment results show that the algorithm achieves good coding performances on both subjective and objective aspects. In addition, the proposed pre-processing algorithm is transparent to decoder, and thus can be compliant with any video coding standards without modifying the decoder.

Key words: video pre-processing; Gaussian filter; detection and restoration of edge; Rate-Distortion Optimization

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