Abstract: The paper compares two Sketch Based Image Retrieval schemes used for the image retrievals. The various schemes for image retrieval are Local Binary Patterns (LBP), and Chain Code. In Local Binary Patterns (LBP), it describes the neighborhood of a pixel by its binary derivatives. To form a short code to describe the pixel neighborhood the binary derivatives are used. For pattern recognition the patterns are often used. In Chain Code Technique, it recognizes the shape of the object using contours as a feature to recognize the shape of an object. Contours play an important role in image processing and computer vision to detect various objects in image or sketch which is easy to implement.

Keywords: LBP, Chain Code, binary representation, countour.