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An Enhanced Motion Vector Composition Scheme of the Frame-Rate Control Transcoder  

Lee Seung Won (부산대학교 전자계산학과)
Park Seong Ho (부산대학교 정보전산원)
Chung Ki Dong (부산대학교 전자계산학과)
Publication Information
Journal of KIISE:Computing Practices and Letters / v.11, no.1, 2005 , pp. 50-61 More about this Journal
Abstract
To provide adaptively video streaming services on network environment, video transcoding is introduced. The one of transcoding methods is the frame-rate conversion. it needs a re-estimation about a motion vector of the frame to refer a skipping frame. This re-estimation makes higher the computational complexity in video transcoding. To reduce the computational complexity of a motion vector refinement, this paper proposes a region & activity based motion vector composition scheme that refine the moving vector of a skipping frame. This scheme composes each motion vector from the weight based on the activity information of a macroblock and the site of the overlapped area. The experiment result shows that RABVC has a higher PSNR than the value of existing weight-based motion vector selection schemes though the computational complexity of our scheme is similar to that of other schemes.
Keywords
Motion Vector refinement; Transcoding; Computational Complexity; PSNR;
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