Recently, CBIR is becoming the hotspot in the research community of multi-media technologies. Within CBIR, image retrieval in the compressed domain is the latest development. CBIR makes use of the image processing from lower level to higher level, and extracts the content features of images, and carrys out retrieval according to the content features. CBIR is able to inquire a set of images from the image data base, which are similar to the sample image given by a user.The main contents of this dissertation ...