Although color structure descriptor contains the structural information of color

it is crude for processing the color contents of the 8×8 structural elements to distinguish two different pictures with the same color structure histogram. In this paper

a method for image retrieval based on structure quantification histogram is presented. The color structure histogram is one specific case of structure quantification histogram

which is endowed an extreme quantification step as 1. While the colorhistogram is the otherone of structure quantification histogram

which is endowed an extreme quantification step as 0. The performances of the three types of histogram are discussed through average retrieval rate(RARR) and average normalized modified retrieval rank(GANMRR) including 2600 flowerpictureswith differentquantification dimensions(32

64

128

256) inHMMD color space. The results show that the performance ofstructure quantification histogram ofstep size 0.5 is the best. Evaluation criterion used inMPEG27 is introduced in detail and is used to evaluate the experimental results.