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Proceedings Paper

Hierarchical variable block size motion estimation technique for motion sequence coding
Author(s): JongWon Kim; Sang Uk Lee
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Paper Abstract

Recently, a variable block size (VBS) motion estimation technique has been employed to improve the performance of the motion compensated transform coding (MCTC). This technique allows larger blocks to be used when smaller blocks provide little gain, saving the bit rates especially for areas containing more complex motion. However, there has been little effort in investigating an efficient VBS motion structure for reducing the motion vector coding rates further. Hence, in this paper, a new VBS motion estimation technique based on a hierarchical structure is proposed, which improves the motion vector encoding efficiency and reduces the number of motion vectors to be transmitted as well. Intensive computer simulations on several moving image sequences show that the MCTC employing the VBS motion estimation provides a performance improvement of 0.7 to approximately 1.0 dB, in terms of PSNR, compared to the fixed block size motion estimation.

Paper Details

Date Published: 22 October 1993
PDF: 12 pages
Proc. SPIE 2094, Visual Communications and Image Processing '93, (22 October 1993); doi: 10.1117/12.157955
Show Author Affiliations
JongWon Kim, Seoul National Univ. (South Korea)
Sang Uk Lee, Seoul National Univ. (South Korea)

Published in SPIE Proceedings Vol. 2094:
Visual Communications and Image Processing '93
Barry G. Haskell; Hsueh-Ming Hang, Editor(s)

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