Optical flow back-projection for genuine motion vector estimation

Chieh Ling Huang, E. Liang Chen, Pau Choo Chung, Yuh Ren Choo

研究成果: Conference contribution

3 引文 斯高帕斯(Scopus)

摘要

Motion vector plays one significant feature in MPEG-4 video object segmentation. However, the motion vector in this application is required to represent the actual motion displacement, rather than regions of visually significant similarity. In this paper, Optical Flow Back-projection (OFB) which back-projects optical flows in a cluster to restore the region's motion vector from gradient-based optical flows, is proposed to obtain genuine motion displacement. The back-projection is performed based on minimizing the projection mean square errors of the motion vector on gradient directions. As Optical flows of various magnitudes and directions provide various degrees of reliability in the genuine motion restoration, the optical flows to be used in the OFB are selected based on high gradient. With this approach, the interference by similar blocks, which frequently results in irrational motion displacement in traditional block matching approach, can be avoided and more reliable motion vectors can be obtained.

原文English
主出版物標題2004 IEEE International Conference on Multimedia and Expo (ICME)
頁面523-526
頁數4
出版狀態Published - 2004 12月 1
事件2004 IEEE International Conference on Multimedia and Expo (ICME) - Taipei, Taiwan
持續時間: 2004 6月 272004 6月 30

出版系列

名字2004 IEEE International Conference on Multimedia and Expo (ICME)
1

Other

Other2004 IEEE International Conference on Multimedia and Expo (ICME)
國家/地區Taiwan
城市Taipei
期間04-06-2704-06-30

All Science Journal Classification (ASJC) codes

  • 工程 (全部)

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