This paper proposes a novel multi-prior collaboration framework for image restoration. Different from traditional non-reference image restoration methods, a big reference image set is adopted to provide the references and predictions of different popular prior models and accordingly further guide the subsequent multi-prior collaboration. In particular, the collaboration of multi-prior models is...

We study a variable exponent model for image restoration in the case that the exponent attains the critical value one. We prove existence and Γ-convergence. The results answer an open question by Li, Li and Pi [Variable exponent functionals in image restoration, Appl. Math. Comput. 216 (2010), no. 3, 870–882].

In this paper the subband decomposition of a single channel image restoration problem is examined. The decomposition will be carried out in the image model (prior model) in order to take into account the frequency activity of each band of the original image. The hyperparameters associated to each band together with the original image are rigurously estimated within the Bayesian framework. Final...

Perspective distortion always occurs while scanning thick, bound documents, resulting in two problems in the scanned grayscale image – (i) shade along the ‘spine’ of the book, and (ii) warping of words in the shade area. We proposed a restoration system to solve these two problems in our previous paper [1]. However the shape of the warped words was not fully restored, since we simply shifted an...