PROJECT TITLE :

Parametric Blur Estimation for Blind Restoration of Natural Images Linear Motion and Out-of-Focus - 2014

ABSTRACT:

This paper presents a replacement methodology to estimate the parameters of 2 sorts of blurs, linear uniform motion (approximated by a line characterized by angle and length) and out-of-focus (modeled as a uniform disk characterised by its radius), for blind restoration of natural pictures. The tactic is predicated on the spectrum of the blurred pictures and is supported on a weak assumption, which is valid for the most natural pictures: the power-spectrum is approximately isotropic and encompasses a power-law decay with the spatial frequency. We have a tendency to introduce two modifications to the radon remodel, which allow the identification of the blur spectrum pattern of the two varieties of blurs higher than mentioned. The blur parameters are identified by fitting an applicable function that accounts separately for the natural image spectrum and also the blur frequency response. The accuracy of the proposed methodology is validated by simulations, and the effectiveness of the proposed technique is assessed by testing the algorithm on real natural blurred images and comparing it with state-of-the-art blind deconvolution methods.