Research on image retrieval based on edge point angle histogram
Lihong Zhang · Journal of the University of Shanghai for Science and Technology · 2010
Shape-based image retrieval is the main components of content-based image retrieval and has the advantages of translation invariance,rotation invariance and size invariance.A method was presented,in which the feature is directly extracted on the edge curve,using the angle histogram of edge points as the feature vectors.The experiments prove that the method can effectively improve the accuracy of image retrieval,and shorten the searching time.