An improved adaptive selection search for block motion estimation

Autor:	E. Liang Chen, Dongbo Zhang, Fu Mo
Rok vydání:	2017
Předmět:	Speedup Computer science Motion search Active motion Computational Mathematics Computational Theory and Mathematics Search algorithm Hardware and Architecture Motion estimation Modeling and Simulation Coding systems Adaptive selection Algorithm Software Coding (social sciences)
Zdroj:	International Journal of Computational Science and Engineering. 15:106
ISSN:	1742-7193 1742-7185
DOI:	10.1504/ijcse.2017.086006
Popis:	Motion estimation has an important effect in H.265 video coding systems because it occupies a large amount of time in encoding system. So the quality of motion search selection affects the entire encoding efficiency directly. In this paper, a novel search algorithm which utilises an adaptive hexagon and small diamond search is proposed to overcome the drawbacks of the traditional block matching selection implemented in most current video coding standards. The adaptive search algorithm is chosen according to the motion strength of the current block. When the block is in active motion, the hexagon search provides an efficient search method; when the block is inactive, the small diamond search is adopted. Experimental simulation results showed that our adaptive search algorithm can speed up the search process with little effect on distortion performance compared with other traditional approaches.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4587d047929bae25b7eaec4f4dd4dd62 https://doi.org/10.1504/ijcse.2017.086006 Zobrazit plný text záznamu