Abstract: An image quality assessment method image contrast similarity based on Gabor filter is proposed for assessing the image quality of radiant blur image which is taken place in the forward motion imaging. Method uses the log polar Gabor filter for simulating the way that human visual system processing the image, then the image can be filtered by frequency and azimuth bands at the same time. Experiment results have proved that the correlation coefficient between results of our method and the subjective one is 0.95, and our method is effective for assessing the radial blur image.