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Proceedings Paper

New pel-recursive motion estimation algorithms based on novel interpolation kernels
Author(s): Michael T. Orchard
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Paper Abstract

Pel-recursive motion estimation algorithms are an attractive alternative to block-matching motion compensation algorithms for video coding because (a) they do not require that motion information by transmitted over the channel, and (b) they allow the reconstruction of continuously varying motion fields. Unfortunately, the high computational complexity of these algorithms and their difficulty in tracking varying motion fields, discontinuities in motion fields, and noisy image sequences have led most current video coding algorithms to use block- based rather than pel-recursive approaches to motion estimation and compensation. This paper presents a new, discrete formulation of pel-recursive motion estimates which allows more flexibility in trading off computational complexity for prediction accuracy, and which permits the design of hybrid motion-estimation algorithms sharing characteristics of both pel-recursive approaches and block-matching approaches. Using the discrete formulation, we defined three novel approaches to motion estimation, one in the form of a conventional pel-recursive algorithm and two incorporating various amounts of block-based motion information from the encoder. We present simulations comparing their performance with both standard pel- recursive and block-matching motion estimation algorithms, demonstrating significant improvements in prediction accuracy.

Paper Details

Date Published: 1 November 1992
PDF: 12 pages
Proc. SPIE 1818, Visual Communications and Image Processing '92, (1 November 1992); doi: 10.1117/12.131380
Show Author Affiliations
Michael T. Orchard, Univ. of Illinois/Urbana-Champaign (United States)

Published in SPIE Proceedings Vol. 1818:
Visual Communications and Image Processing '92
Petros Maragos, Editor(s)

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