Motion Estimation and Video Compression of Low Power H.264
Journal Title: International Journal of Engineering Sciences & Research Technology - Year 30, Vol 3, Issue 2
Abstract
This paper presents a method to reduce the computation and memory access for variable block size motion estimation (ME) using pixel truncation. Previous work has focused on implementing pixel truncation using a fixedblocksize (16×16 pixels) ME .In recent years, the mobile phone industry has become one of the most dynamic technology sectors. The increasing demands of multimedia services on the cellular networks have accelerated this trend. This paper presents a low power SIMD architecture that has been tailored for efficient implementation of H.264 encoder/decoder kernel algorithms. However, pixel truncation fails to give satisfactory results for smaller block partitions. In this paper, we analyze the effect of truncating pixels for smaller block partitions and propose a method to improve the frame prediction. Our method is able to reduce the total computation and memory access compared to conventional full-search method without significantly degrading picture quality. With unique data arrangement, the proposed architectures are able to save up to 63% energy compared to the conventional full-search architecture. This makes such architectures attractive for H.264 application in future mobile devices.
Authors and Affiliations
Kamatam Sateesh
Keywords
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