Image processing assisted voltage overscaling for energy efficient IC realization of motion estimation

Rajat Dani; Tong Zhang; John W. Woods

doi:10.1117/12.776597

28 January 2008 Image processing assisted voltage overscaling for energy efficient IC realization of motion estimation

Rajat Dani, Tong Zhang, John W. Woods

Author Affiliations +

Proceedings Volume 6822, Visual Communications and Image Processing 2008; 68221A (2008) https://doi.org/10.1117/12.776597
Event: Electronic Imaging, 2008, San Jose, California, United States

Abstract

This paper presents an energy efficient VLSI architecture for motion estimation using image processing assisted voltage overscaling (VOS). Motion estimation is the most computationally expensive block inside any video encoder, typically consuming 40-60% of the total power. This work focuses on using VOS to reduce power consumption at the expense of marginal loss of visual quality. Some image processing techniques are used to assist VOS so that a better trade-off between power and visual quality can be achieved. The design is demonstrated using full search and three step search algorithms. Simulation results in 65nm CMOS technology show that the proposed technique can save up to 30% power at the cost of 0.5dB loss of PSNR.

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Rajat Dani, Tong Zhang, and John W. Woods "Image processing assisted voltage overscaling for energy efficient IC realization of motion estimation", Proc. SPIE 6822, Visual Communications and Image Processing 2008, 68221A (28 January 2008); https://doi.org/10.1117/12.776597

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