A novel kite-cross-diamond search algorithm for fast video coding and videoconferencing applications

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalNot applicablepeer-review

8 Scopus Citations
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Detail(s)

Original languageEnglish
Journal / PublicationICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
Volume3
StatePublished - 2004

Conference

TitleProceedings - IEEE International Conference on Acoustics, Speech, and Signal Processing
PlaceCanada
CityMontreal, Que
Period17 - 21 May 2004

Abstract

In this paper, we propose a kite-cross-diamond search (KCDS) algorithm, which is an improved version of the well-known cross-diamond search (CDS) algorithm and small cross-diamond search (SCDS) algorithm. Unlike traditional search pattern in block matching algorithm, such as square, diamond or cross - all are in vertically and horizontally symmetric shape, the KCDS algorithm adopts a novel asymmetric kite-shaped search patterns in the search step to keep similar distortion while the speed of the motion estimation for stationary or quasi-stationary blocks is further boosted. Experimental results show that the KCDS algorithm could achieve 39% searching point reduction as compared with CDS whereas similar and even better prediction accuracy is resulted in low-motion sequences. Simulations show that KCDS is the fastest algorithm and it performs more accurate in some kinds of sequences. This algorithm is especially suitable for videoconferencing applications.

Research Area(s)

  • Cross-center biased characteristic, Kite-cross-diamond search, Motion estimation