title: Single image interpolation via adaptive nonlocal sparsity-based modeling.
abstract: Single image interpolation is a central and extensively studied problem in image processing. A common approach toward the treatment of this problem in recent years is to divide the given image into overlapping patches and process each of them based on a model for natural image patches. Adaptive sparse representation modeling is one such promising image prior, which has been shown to be powerful in filling-in missing pixels in an image. Another force that such algorithms may use is the self-similarity that exists within natural images. Processing groups of related patches together exploits their correspondence, leading often times to improved results. In this paper, we propose a novel image interpolation method, which combines these two forces-nonlocal self-similarities and sparse representation modeling. The proposed method is contrasted with competitive and related algorithms, and demonstrated to achieve state-of-the-art results.
authors.forename: Yaniv
authors.initials: Y
authors.lastname: Romano
authors.forename: Matan
authors.initials: M
authors.lastname: Protter
authors.forename: Michael
authors.initials: M
authors.lastname: Elad