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Proceedings Paper

Adaptive subregion variable shape block compensated prediction
Author(s): Nigel W. Garnham; Mohammad K. Ibrahim
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Paper Abstract

This paper describes a general approach to interframe video coding using a method of local feature-based motion compensation. Used in conjunction with a DPCM/DCT interframe coding technique, such as the CCITT H.261 algorithm, this technique is computationally viable at real-time rates, employing a simple process of evaluating the nature and content of features and their subsequent displacement. As a secondary means of interframe coding, it has proved possible to introduce mode-value blocking and quantization to speed the motion estimation process and results indicate that as part of a hybrid encoding algorithm, this approach is quite acceptable as no long-term errors are propagated. In addition to a description of feature analysis as a combinational coding method, it is shown that the process of feature extraction and evaluation provides, in its own right, scope to form the basis of a complete, efficient codec of low complexity.

Paper Details

Date Published: 21 September 1994
PDF: 10 pages
Proc. SPIE 2298, Applications of Digital Image Processing XVII, (21 September 1994); doi: 10.1117/12.186554
Show Author Affiliations
Nigel W. Garnham, Univ. of Nottingham (United Kingdom)
Mohammad K. Ibrahim, Univ. of Nottingham (United Kingdom)


Published in SPIE Proceedings Vol. 2298:
Applications of Digital Image Processing XVII
Andrew G. Tescher, Editor(s)

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