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Optical Engineering

Data reuse-based fast subpixel motion estimation for high efficiency video coding
Author(s): Kiho Choi; Euee S. Jang
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Paper Abstract

A data reuse-based fast subpixel motion estimation (SME) method for high efficiency video coding (HEVC) is proposed. Since SME is one of the most computation-intensive tools in the encoder process, conventional research on SME focused on the reduction of the computational complexity. The applied data-reuse architecture for the design of fast SME substantially reduces computational complexity at the cost of a reasonable increase in memory bandwidth. The core of the proposed data-reuse method is the replacement of redundant computations in SME with the memory access operations of previously computed values. The proposed method was tested in the latest video coding standard, HEVC, with experimental results showing a reduction in operational complexity of ∼64.14%, and a reduction in encoding time of ∼56.13%, compared to the SME in the HEVC reference encoder.

Paper Details

Date Published: 13 June 2014
PDF: 10 pages
Opt. Eng. 53(6) 063103 doi: 10.1117/1.OE.53.6.063103
Published in: Optical Engineering Volume 53, Issue 6
Show Author Affiliations
Kiho Choi, Hanyang Univ. (Korea, Republic of)
Euee S. Jang, Hanyang Univ. (Korea, Republic of)

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