Anastasios Roussos Petros Maragos Vector-Valued Image Interpolation by an Anisotropic Diffusion-Projection PDE. 104-115 2007 conf/scalespace/2007 SSVM http://dx.doi.org/10.1007/978-3-540-72823-8_10 db/conf/scalespace/ssvm2007.html#RoussosM07