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Proceedings Paper

Efficient algorithm for video compression using the wavelet transform
Author(s): Vitor Mendes Silva; Luis A. S. V. de Sa
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Paper Abstract

An effective video coding algorithm is described. It is based on a new quadtree block merging algorithm and wavelet decomposition of video signals using orthonormal and biorthogonal filter banks. With the merging algorithm the motion compensated predicted images are represented by a small set of rectangular regions in order to improve the coding efficiency and to minimize the border effects associated to the wavelet transform. A new solution to the problem of processing finite length signals by wavelet transforms, based on time-varying perfect reconstruction filter banks will be developed. Results of coding simulations using the merging algorithm with 8 X 8 and 16 X 16 blocks are presented. Also, subjects such as, choice of the optimal filter bank, boundary effects, optimal scalar quantization of the wavelet coefficients and prediction error filtering by wavelet decompositions will be discussed.

Paper Details

Date Published: 17 April 1995
PDF: 9 pages
Proc. SPIE 2419, Digital Video Compression: Algorithms and Technologies 1995, (17 April 1995); doi: 10.1117/12.206375
Show Author Affiliations
Vitor Mendes Silva, Univ. de Coimbra (Portugal)
Luis A. S. V. de Sa, Univ. de Coimbra (Portugal)

Published in SPIE Proceedings Vol. 2419:
Digital Video Compression: Algorithms and Technologies 1995
Arturo A. Rodriguez; Robert J. Safranek; Edward J. Delp, Editor(s)

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