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A hybrid coded block patterns based fast mode decision in H.264/AVC

Shi, Z, Fernando, WAC and Kondoz, AM (2012) A hybrid coded block patterns based fast mode decision in H.264/AVC

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Abstract

The video coding standard H.264/AVC although possesses the advantage of higher coding efficiency compared to previous ones, it would result in a high computational complexity due to various block sizes motion estimation for multi-modes decision. In this paper, a hybrid inter-mode decision algorithm is presented, combining coded block pattern (CBP) with motion activity and Rate-Distortion (RD) cost. In this algorithm, CBP and CBP , which indicate none-zero coefficient block, is used to determine candidate modes at macro block level and sub-macro block level. Further, the normalized motion activity is used to identify the homogeneity of the block and target the candidate modes set more accurate. An early termination is also made between macro block level and sub-macro block level by RD cost comparing. The experimental results show that the proposed algorithm achieves approximately 60% of computational complexity saving in terms of encoding time, while with negligible quality degradation, compared to the conventional method in H.264/AVC. © 2012 IEEE.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Authors :
NameEmailORCID
Shi, ZUNSPECIFIEDUNSPECIFIED
Fernando, WACw.fernando@surrey.ac.ukUNSPECIFIED
Kondoz, AMa.kondoz@surrey.ac.ukUNSPECIFIED
Date : 2012
Identification Number : https://doi.org/10.1109/ICMEW.2012.10
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 12:35
Last Modified : 17 May 2017 15:04
URI: http://epubs.surrey.ac.uk/id/eprint/835909

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