Quadtree-based block merging algorithm for subband coding

Vitor Mendes Silva; Luis A. S. V. de Sa

doi:10.1117/12.201194

17 February 1995 Quadtree-based block merging algorithm for subband coding

Vitor Mendes Silva, Luis A. S. V. de Sa

Proceedings Volume 2451, Advanced Image and Video Communications and Storage Technologies; (1995) https://doi.org/10.1117/12.201194
Event: Advanced Networks and Services, 1995, Amsterdam, Netherlands

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.

Citation Download Citation

Vitor Mendes Silva and Luis A. S. V. de Sa "Quadtree-based block merging algorithm for subband coding", Proc. SPIE 2451, Advanced Image and Video Communications and Storage Technologies, (17 February 1995); https://doi.org/10.1117/12.201194

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KEYWORDS

Wavelets

Image filtering

Video coding

Algorithm development

Image compression

Electronic filtering

Optimal filtering

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