Parabolic motion-vector re-estimation algorithm for compressed video downscaling

Chia Hung Yeh*, Ying H. Chen, Ming Chieh Chi, Mei Juan Chen

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

3 引文 斯高帕斯(Scopus)

摘要

For multimedia communications, there is a need to downscale a video prior to transmission because of the limitation of the bandwidth of a channel, and/or the different standards between transcoders. However, performing motion estimation in the downscaled video is computational intensive. In this paper, a parabolic motion vector re-estimation (PMVR) algorithm is proposed to predict motion vectors of the downscaled video. The proposed algorithm can significantly reduce computational complexity with slight PSNR degradation, in comparison with full search algorithm. Experimental results show that, with few additional computation, the proposed algorithm achieves a much higher quality than several existing algorithms.

原文英語
頁(從 - 到)375-386
頁數12
期刊Journal of Signal Processing Systems
61
發行號3
DOIs
出版狀態已發佈 - 2010 十二月
對外發佈

ASJC Scopus subject areas

  • 控制與系統工程
  • 理論電腦科學
  • 訊號處理
  • 資訊系統
  • 建模與模擬
  • 硬體和架構

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