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Fast Mode Decision for H.264/AVC Based on Rate-Distortion Clustering

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2 Author(s)
Yu-Huan Sung ; Dept. of Comput. Sci. & Inf. Eng., Nat. Central Univ., Jhongli, Taiwan ; Jia-Ching Wang

Although H.264/AVC is a promising video coding standard that achieves excellent coding performance in terms of visual quality and bitrate, its extremely high encoding complexity raises concerns about its computational burden on real-time applications. This work presents a multi-phase classification (MPC) scheme that builds a mode decision tree according to the clustering of rate-distortion costs. A nearest cluster mean criterion is used to examine candidate modes phase by phase, and a performance control mechanism is incorporated to maintain coding performance. Experimental results confirm that the proposed MPC algorithm reduces encoding time by an average of 68% with only negligible performance degradation.

Published in:

Multimedia, IEEE Transactions on  (Volume:14 ,  Issue: 3 )

Date of Publication:

June 2012

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