Ringing reduced iterative deconvolution for astronomical optical image using gradient constraint regularization

摘要

It is difficult to restore images with details preserving and ringing suppressing. A gradient minimization based image restoration method is proposed for astronomical imagery. We consider no prior knowledge of noise statistics for image deconvolution, meanwhile, L0 gradient measure is also treated as the regularization term to reduce ringing artifacts. According to experiments of real image, the proposed algorithm could produce a high-quality result with ringing suppression. Comparing with other algorithms via visual effect and image quality assessment, the proposed algorithm performs best in balancing details restoration and ringing reduction. (C) 2015 Elsevier GmbH. All rights reserved.