An overview of content-based image retrieval techniques

Content-based image retrieval is currently a very important area of research in the area of multimedia databases. Plenty of research work has been undertaken to design efficient image retrieval techniques from image or multimedia databases. Although a large number of indexing and retrieval techniques have been developed, there are still no universally accepted feature extraction, indexing and retrieval techniques available. In this paper, we present an up-to-date review of various content-based image retrieval systems. Since the volume of literature available in the field is enormous, only selected works are mentioned.