A Center-Surround Histogram for content-based image retrieval
In this paper, a new type of histogram which incorporates only the visual information surrounding the edges of the image is introduced. The edge extraction operation is performed with the use of a center-surround operator of the Human Visual System. The proposed Center-Surround Histogram (CSH) has two main advantages over the classic histogram. First, it reduces the amount of visual information that needs to be processed and second, it incorporates a degree of spatial information when used in content based image retrieval applications. The method is compared with other contemporary image retrieval methods, including that of another edge color histogram, on two different databases. The comparison shows that the use of CSH exhibits better results in shorter execution times.
image retrieval color histogram image analysis edge detection difference of gaussians hvs