Affine-invariant sketch-based retrieval of images

The advent of the digital library and multimedia database require robust techniques for multimedia content searches. Content-based retrieval techniques have been developed to overcome some of the limitations associated with conventional keyword-based browsing or searching of visual data. We present an affine invariant shape-based retrieval technique for image retrieval which is efficient and robust. More importantly, the technique supports a query presented in the form of hand-drawn sketches and has the potential of supporting affine invariant partial shape retrieval.