Abstract: With focusing on the problem of low retrieval rate of texture image retrieval system based on contourlet transform,a texture image retrieval system based on generalized Gaussian distribution（GGD）and non-subsampled contourlet-transform is proposed.The feature vectors in the system is constructed by cascading scale and shape parameters of GGD for every sub-band in contourlet domain,and the similarity metric used here is K-L distance.Experimental results show that non-subsampled contourlet transfor...