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Proceedings Paper

Quadtree-based block merging algorithm for subband coding
Author(s): Vitor Mendes Silva; Luis A. S. V. de Sa
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Paper Abstract

An efficient 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. The merging algorithm represents the motion compensated predicted images in a small set of rectangular regions in order to improve the coding efficiency and to minimize the border affects associated to the wavelet transform. Results of coding simulations using 8 X 8 and 16 X 16 blocks are presented. Also, subjects such as choice of the optimal filter bank, boundary effects, quantization of the wavelet coefficients, and filtering the prediction error by wavelet decomposition are discussed.

Paper Details

Date Published: 17 February 1995
PDF: 6 pages
Proc. SPIE 2451, Advanced Image and Video Communications and Storage Technologies, (17 February 1995);
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. 2451:
Advanced Image and Video Communications and Storage Technologies
Naohisa Ohta; Heinz U. Lemke; Jean Claude Lehureau, Editor(s)

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