Sparse Gabor wavelets by local operations

Sylvain Fischer; Rafael Redondo; Laurent Perrinet; Gabriel Cristobal

doi:10.1117/12.608403

29 June 2005 Sparse Gabor wavelets by local operations

Sylvain Fischer, Rafael Redondo, Laurent Perrinet, Gabriel Cristobal

Proceedings Volume 5839, Bioengineered and Bioinspired Systems II; (2005) https://doi.org/10.1117/12.608403
Event: Microtechnologies for the New Millennium 2005, 2005, Sevilla, Spain

Abstract

Efficient sparse coding of overcomplete transforms remains still an open problem. Different methods have been proposed in the literature, but most of them are limited by a heavy computational cost and by difficulties to find the optimal solutions. We propose here an algorithm suitable for Gabor wavelets and based on biological models. It is composed by local operations between neighboring transform coefficients and achieves a sparse representation with a relatively low computational cost. Used with a chain coder, this sparse Gabor wavelet transform is suitable for image compression but is also of interest also for other applications, in particular for edge and contour extraction and image denoising.

Citation Download Citation

Sylvain Fischer, Rafael Redondo, Laurent Perrinet, and Gabriel Cristobal "Sparse Gabor wavelets by local operations", Proc. SPIE 5839, Bioengineered and Bioinspired Systems II, (29 June 2005); https://doi.org/10.1117/12.608403

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