Estimation of PSF for a Shaking Blurred Image Using GA

Abstract

Development of downsized digital cameras causes a lot of undesirable shaking blurred images. In order to restore these images, we need to estimate the PSF (Point Spread Function) from them. It has been proposed to estimate the PSF using cepstrum images. There are the PSF features in the cepstrum images of blurred images. We can estimate the PSF by searching pixels in the cepstrum images. However, cepstrum images also show features of ground truth images which don't have effects from shaking, so we can't estimate the PSF accurately. We propose an estimation method of the PSF by using GA.We adopt the cepstrum images as a fitness function,thus the estimation results aren't affected by other features in cepstrum images.We have just confirmed the effectiveness of our proposed method by using some simulations.