A Method of Image Retrieval Based on Clustered Domain Colors and Edge Histogram
Chen Chu · Computer Technology and Development · 2011
Domain colors of images are widely applied to image retrieval,but domain colors can not reflect spatial distribution of images' information.Edge histogram is extracted from gray images and discards color information of images.A new image retrieval method which uses clustered domain colors and edge information synthetically is put forward.First,domain colors of images are got by K-means clustering algorithm.Second,images are segmented by Otsu algorithm and edge histogram is constructed by using marked edge characteristic information between target and background which is extracted by Sobel operator.Third,retrieval is carried out by using clustered domain colors and edge histogram synthetically.Not only information of domain colors is used,but also characteristic information which reflects spatial distribution of images' information is used.The results of experiments show that this method can improve the precision of retrieval efficiently.