Wavelet-based approaches versus subband coding techniques for still-image coding

Manuel A. Sola; Sebastia Sallent-Ribes

doi:10.1117/12.188768

11 October 1994 Wavelet-based approaches versus subband coding techniques for still-image coding

Manuel A. Sola, Sebastia Sallent-Ribes

Proceedings Volume 2303, Wavelet Applications in Signal and Image Processing II; (1994) https://doi.org/10.1117/12.188768
Event: SPIE's 1994 International Symposium on Optics, Imaging, and Instrumentation, 1994, San Diego, CA, United States

Abstract

In this paper, the performance of filters implied in the discrete wavelet transform approach is compared with a set of filters of common application in image processing. A multidimensional multirate codec is designed in which the best subband decomposition and coding is jointly obtained by minimization of a rate-distortion criterion. We also introduce the idea of directional sensitivity based on the initial sampling lattice. This allows the codec to adapt better to the spectral content of the signal. Finally, taking as a starting point the continuous wavelet transform, we propose a discrete multiresolution analysis that would lead to new discrete transforms of special interest when analyzing discrete scalings and shiftings: the completely discrete wavelet transform.

Citation Download Citation

Manuel A. Sola and Sebastia Sallent-Ribes "Wavelet-based approaches versus subband coding techniques for still-image coding", Proc. SPIE 2303, Wavelet Applications in Signal and Image Processing II, (11 October 1994); https://doi.org/10.1117/12.188768

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