Bevilacqua, Marco and Roumy, Aline and Guillemot, Christine and Alberi-Morel, Marie Line Neighbor embedding based single-image super-resolution using Semi-Nonnegative Matrix Factorization. In: Proceedings of IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP). IEEE, pp. 1289-1292. ISBN 978-1-4673-0044-5 (2012)