Image retrieval algorithm based on image projection
Taijun Li · Journal of Tsinghua University(Science and Technology) · 2005
The global color histogram cannot reflect the spacial information of image's color. To overcome this defect, a new image retrieval algorithm based on image projection is presented. By using the HSI color model, the image's hue, saturation, and intensity were projected onto the horizontal and vertical directions, respectively, and six projective histograms were obtained. The projective histograms of hue and saturation discribe the color distribution in space, and the projective histogram of intensity reflects the shape of the image. Then, the first three central moments of these six projective histograms were taken as features to compute the distance between images. Experimental results show that this algorithm performs quickly and has good recall rate and precision.