Study on performance of MPEG-7 visual descriptors for deformable object retrieval

This paper presents results on the study of MPEG-7 visual descriptors for deformable object retrieval. A database of 819 handbag images with shape masks are constructed with different variations such as morphing, illumination changes, view point changes and color changes. For color descriptors, all of 4 MPEG-7 color descriptors of Dominant Color descriptor, Color Structure descriptor, Color Layout descriptor and Scalable Color descriptor are tested. For texture descriptor, Homogeneous Texture descriptor and Edge Histogram descriptor are tested. For shape descriptors, Contour-based and Region based descriptor are tested. The retrieval rate of the descriptors and correlation of each pair of descriptors are studied. The result shows that the Scalable Color descriptor is the best in terms of retrieval rate and the color descriptors are relatively highly correlated among themselves.