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An adaptive, feature-based low power motion estimation algorithm

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2 Author(s)
Gupte, A. ; Texas Instrum. India Ltd., Bangalore ; Bharadwaj, A.

Motion Estimation is one of the most power hungry operations in video coding. While optimal search (eg. full search) methods give best quality, non optimal methods are often used in order to reduce cost and power. Various algorithms have been used in practice that trade off quality vs. complexity. Global elimination is an algorithm based on pixel averaging to reduce complexity of motion search while keeping performance close to that of full search. We propose an adaptive version of the global elimination algorithm that extracts individual macro-block features using Hadamard transform to optimize the search. Performance achieved is close to the full search method and global elimination. Operational complexity and hence power is reduced by 30% to 45% compared to global elimination method.

Published in:

Multimedia and Expo, 2008 IEEE International Conference on

Date of Conference:

June 23 2008-April 26 2008

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