Orientation difference statistics for texture description

This paper presents a new approach for the description of directional textures based on the study of their orientation and coherence fields. We apply the feature-based interaction maps to the characterization of an orientation field. The features are extracted from orientation spatial difference histograms. The representation of a feature, as a function of the spacing vector used to compute the spatial statistics, yields a 2-D interaction map which can be used to assess the structural layout of texture. Orientation-based interaction maps are exercised on original and distorted Brodatz textures. The results show the relevance and the robustness of the approach for the description of directional textures.