Robust and fast global motion estimation for arbitrarily shaped video objects in MPEG-4

Hoi Kin Cheung, Yui Lam Chan, Wan Chi Siu

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review


Global motion estimation is used for exploiting temporal redundancies in arbitrarily shaped video objects, which is computationally the most demanding part within the MPEG-4 standard. In this paper, we propose a robust and fast method for the estimation of global motion of video objects used in the MPEG-4. Predictors are widely used in block-based motion estimation and it is well proven that the use of good predictors can speed up the motion estimation process. The proposed algorithm makes use of the shape information (alpha-plane) of video objects to form a new predictor. From the experimental results, we conclude that the new predictor provides additional performance gains with reducing computational complexity of global motion estimation.
Original languageEnglish
Title of host publicationInternational Conference on Signal Processing Proceedings, ICSP
Number of pages4
Publication statusPublished - 17 Nov 2004
Event2004 7th International Conference on Signal Processing Proceedings (ICSP'04) - Beijing, China
Duration: 31 Aug 20044 Sep 2004


Conference2004 7th International Conference on Signal Processing Proceedings (ICSP'04)

ASJC Scopus subject areas

  • Signal Processing

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