Moving detection is a key technology in robust video surveillance. Currently widely used Gaussian mixture model(GMM) always detects incorrectly and cannot deal with shadows based on the pixel level and time domain classification

so we introduce an effective algorithm extending the pixel level detection to space domain detection with the combination of illumination of the pixel using GMM and apply it for shadow removal after the first step when foreground pixels has been got. Besides

some parameters in the standard GMM are modified. Experiments show that our algorithm is effective both on detect accuracy and shadow removal.