Abstract: In video tracing,due to the fact that moving shadows have some similar physical characteristics to moving objects,it is difficult for known object extracting methods to distinguish moving shadows from moving objects.To address this problem,an algorithm for detecting moving shadows based on the relationship between region color and the illumination information of the pixels is proposed.Therefore,the noise effect on the detecting structure when using one pixel as the smallest detecting unit can be efficiently reduced by the proposed algorithm.Meanwhile,the illumination invariance of local binary pattern(LBP) texture is used to detect shadow,after proven by the analysis on the physical model of moving shadows.According to the actual characteristics of video image,a method based on region color and texture is presented to detect moving shadows.Experiment results show that the proposed method is robust and efficient in shadow detection under different scenes.