SASI: a new texture descriptor for content based image retrieval

A new texture descriptor, namely, statistical analysis of structural information (SASI) is introduced as a representation of texture. SASI is based on the statistics of clique autocorrelation functions calculated over a set of directional moving windows. SASI defines a set of windows to extract and measure various structural properties of texture by using a spatial multiresolution method. Although it works in the spatial domain, it measures the spectral information of a given texture. Experimental results, performed on the digitized Brodatz Album, indicate that SASI is very successful in identifying "similar" textures.