Identification of parameters and restoration of motion blurred images

Abstract

This paper proposes a technique for restoring the motion blurred images. Restoration of blurred images is very important problem in tracking and identification of criminals, where image of a human face or number plate of a running vehicle taken in hit and run situation gets blurred due to relative motion between the imaging system and object/face. For restoration of motion blurred images, knowledge of the point spread function (PSF) is very important. The motion blur PSF is characterized by two parameters, namely blur direction and blur length. This paper also presents a method to identify the parameters of the PSF from the blurred and noisy images using the log spectrum of the blurred images. These parameters are used to restore the images. The experimental results demonstrate that the image can successfully be restored from the image with substantial amount of natural and artificial blur.