Super-resolution of images based on local correlations

An adaptive two-step paradigm for the superresolution of optical images is developed in this paper. The procedure locally projects image samples onto a family of kernels that are learned from image data. First, an unsupervise d feature extraction Is performed on local neighborhood information from a training image. These features are then used to cluster the neighborhoods i nto disjoint sets for which an optimal mapping relating homologous neighbor hoods across scales can be learned in a supervised manner, A super-resolved image is obtained through the convolution of a low-resolution test image w ith the established family of kernels. Results demonstrate the effectivenes s of the approach.