COPULAS BASED MULTIVARIATE GAMMA MODELING FOR TEXTURE CLASSIFICATION - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2009

COPULAS BASED MULTIVARIATE GAMMA MODELING FOR TEXTURE CLASSIFICATION

Résumé

This paper deals with texture modeling for classification or retrieval systems using multivariate statistical features.The proposed features are defined by the hyperparameters of a copula-based multivariate distribution characterizing the coefficients provided by image decomposition in scale and orientation. As it belongs to the multivariate stochastic models,the copulas are useful to describe pairwise non-linear association in the case of multivariate non-Gaussian density. In this paper, we propose the d-variate Gaussian copula associated to univariate Gamma densities for modeling the texture. Experiments were conducted on the VisTex database aiming to compare the recognition rates of the proposed model with the univariate generalized Gaussian model, the univariate Gamma model, and the generalized Gaussian copula-based multivariate model.
Fichier non déposé

Dates et versions

hal-00399615 , version 1 (27-06-2009)

Identifiants

Citer

Yannick Berthoumieu, Nour-Eddine Lasmar, Youssef Stitou. COPULAS BASED MULTIVARIATE GAMMA MODELING FOR TEXTURE CLASSIFICATION. International Conference on Acoustics, Speech and Signal Processing, Apr 2009, Taipei, Taiwan. pp.1045-1049, ⟨10.1109/ICASSP.2009.4959766⟩. ⟨hal-00399615⟩
169 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More