In order to improve the effect of the color image retrieval

a new algorithm is proposed based on FourierMellin moments

phase congruent and gradient magnitude in this paper.This method aims to extract phase congruent

gradient magnitude of an image smoothed with Hilbert transform

and Fourier-Mellin moments

which not only can fill up an efficiency of the contrast invariant of phase congruent

but also can fully utilize the rotation invariant of Fourier-Mellin moments.The retrieval experiments are conducted in three color databases to test the performance of our method.The experiments show that our method in this paper is more efficient comparing to traditional methods.