Adaptive subregion variable shape block compensated prediction

Nigel W. Garnham; Mohammad K. Ibrahim

doi:10.1117/12.186554

21 September 1994 Adaptive subregion variable shape block compensated prediction

Nigel W. Garnham, Mohammad K. Ibrahim

Proceedings Volume 2298, Applications of Digital Image Processing XVII; (1994) https://doi.org/10.1117/12.186554
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

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.

Citation Download Citation

Nigel W. Garnham and Mohammad K. Ibrahim "Adaptive subregion variable shape block compensated prediction", Proc. SPIE 2298, Applications of Digital Image Processing XVII, (21 September 1994); https://doi.org/10.1117/12.186554

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