A Spatial Weighted Color Histogram for Image Retrieval
Jian Cheng, Yen‐Wei Chen, Hanqing Lu, Xiangyan Zeng · IEICE Transactions on Information and Systems · 2004
Color histograms have been considered to be effective for color image indexing and retrieval. However, the histogram only represents the global statistical color information. We propose a new method: A Spatial Weighted Color Histogram (SWCH), for image retrieval. The color space of a color image is partitioned into several color subsets according to hue, saturation and value in HSV color space. Then, the spatial center moment of each subset is calculated as the weight of the corresponding subset. Experiments show that our method is more effective in indexing color image and insensitive to intensity variations.