The Sum-Absolute-Difference Motion Estimation Accelerator
EUROMICRO '98 Proceedings of the 24th Conference on EUROMICRO - Volume 2
Application Specific Instruction Set Processor for Adaptive Video Motion Estimation
DSD '06 Proceedings of the 9th EUROMICRO Conference on Digital System Design
A new diamond search algorithm for fast block-matching motion estimation
IEEE Transactions on Image Processing
A novel four-step search algorithm for fast block motion estimation
IEEE Transactions on Circuits and Systems for Video Technology
Probabilistic partial-distance fast matching algorithms for motion estimation
IEEE Transactions on Circuits and Systems for Video Technology
Efficient and configurable full-search block-matching processors
IEEE Transactions on Circuits and Systems for Video Technology
Adaptive motion estimation processor for autonomous video devices
EURASIP Journal on Embedded Systems
Hi-index | 0.00 |
Real-time video encoding often demands hardware motion estimators, even when fast search algorithms are adopted. With the widespread usage of portable handheld devices that support digital video coding, low power consideration becomes a central limiting constraint. Consequently, adaptive search algorithms and special hardware architectures have been recently proposed to perform motion estimation in portable and autonomous devices. This paper proposes a new efficient carry-free arithmetic unit to compute the minimum distance in block matching motion estimation. The operation of the proposed unit is independent of the adopted search algorithm and of the used prediction error metric, simultaneously speeding up motion estimation and significantly reducing the power consumption. Moreover, its low latency is particularly advantageous when partial distance techniques are applied to further reduce the power consumption. Experimental results show that the proposed unit allows to reduce the computation time in about 40% and it consumes 50% less power than commonly adopted architectures.