Image inpainting by patch propagation using patch sparsity

IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society
Zongben Xu, Jian Sun

Abstract

This paper introduces a novel examplar-based inpainting algorithm through investigating the sparsity of natural image patches. Two novel concepts of sparsity at the patch level are proposed for modeling the patch priority and patch representation, which are two crucial steps for patch propagation in the examplar-based inpainting approach. First, patch structure sparsity is designed to measure the confidence of a patch located at the image structure (e.g., the edge or corner) by the sparseness of its nonzero similarities to the neighboring patches. The patch with larger structure sparsity will be assigned higher priority for further inpainting. Second, it is assumed that the patch to be filled can be represented by the sparse linear combination of candidate patches under the local patch consistency constraint in a framework of sparse representation. Compared with the traditional examplar-based inpainting approach, structure sparsity enables better discrimination of structure and texture, and the patch sparse representation forces the newly inpainted regions to be sharp and consistent with the surrounding textures. Experiments on synthetic and natural images show the advantages of the proposed approach.

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Citations

May 3, 2012·Journal of Digital Imaging·Vinayak K BairagiAnkita Tapaswi
Aug 20, 2014·TheScientificWorldJournal·Raluca Vreja, Remus Brad
Dec 3, 2014·NeuroImage·Minjeong KimDinggang Shen
Dec 23, 2014·IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society·Zhidan LiFan Chen
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May 11, 2013·IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society·Olivier Le MeurChristine Guillemot
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Sep 22, 2012·IEEE Transactions on Image Processing : a Publication of the IEEE Signal Processing Society·Yunqiang Liu, Vicent Caselles
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