Zhenhua Zhang Wenhui Li Bo Li An Improving Technique of Color Histogram in Segmentation-based Image Retrieval. 381-384 2009 IAS http://dx.doi.org/10.1109/IAS.2009.156 conf/IEEEias/2009 db/conf/IEEEias/IEEEias2009.html#ZhangLL09