The paper describes a review of different techniques in content-based image retrieval. The paper starts with deliberating the fundamental aspects of CBIR. Features for Image Retrieval like color, texture and shape are discussed next. We briefly discuss the similarity measures based on which matches are made and images are retrieved. Another important matter in content-based image retrieval is actually indexing & fast superficial of images based on visual features. Dimension reduction & indexing schemes are also discussed. For content-based image retrieval, user interaction with the retrieval system is crucial since flexible formation and modification of queries can only be obtained by involving the user in the retrieval procedure. Finally Relevance feedback is discussed which helps in improving the performance of a CBIR system.
Image Retrieval, Content Based Image Retieval, CBIR Techniques.