Image annotation and retrieval system based on common sense lib

This paper presented a review on image retrieval system,then pointed out the cause of semantic gap that lied in the absence of description of entity relationship.Introduced a four-layers image semantic model,then,image annotation and retrieval system based on common sense lib and image entity lib.Used the common sense information and entity information(color shape texture) to analyze the composing and relationship was put forth of entity in image,which would help us to obtain the recognizing and understanding of an image.