Abstract: This paper presents a method for image quality descending analysis to the motion blur images using the Kalman motion model.The image restoration algorithm based on the Kalman motion model is designed for the motion blur images restoration processing.The detail restoration steps based on the Kalman model are designed, and the corresponding quality assessment methods are selected to evaluate the restoration quality.The restoration results of the blur freight car images in the freight car weighting system show that the blur images get high quality and the restoration algorithm is effective.