Multiscale skewed heavy tailed model for texture analysis

• Published in: 2009 16th IEEE International Conference on Image Processing (ICIP) pp. 2281 - 2284
• Main Authors: Lasmar, N.-E., Stitou, Y., Berthoumieu, Y.
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.11.2009
• Subjects: Asymmetric Generalized Gaussian density; Dual-Tree Complex Wavelet Transform; Image processing; Image retrieval; Image texture analysis; Kullback-Leibler Divergence; Probability density function; Shape; Signal analysis; Statistical distributions; Stochastic processes; Texture Retrieval; Wavelet analysis; Wavelet transforms
• ISBN: 9781424456536; 1424456533
• ISSN: 1522-4880
• DOI: 10.1109/ICIP.2009.5414404

This paper deals with texture analysis based on multiscale stochastic modeling. In contrast to common approaches using symmetric marginal probability density functions of subband coefficients, experimental manipulations show that the symmetric shape assumption is violated for several texture classes. From this fact, we propose in this paper to exploit this shape property to improve texture characterization. We present Asymmetric Generalized Gaussian density as a model to represent detail subbands resulting from multiscale decomposition. A fast estimation method is presented and closed-form of Kullback-Leibler divergence is provided in order to validate the model into a retrieval scheme. The experimental results indicate that this model achieves higher recognition rates than the conventional approach of using the Generalized Gaussian model where asymmetry was not considered.