System and method for image upsampling using natural image statistics of first and second derivatives

摘要: Systems and methods for upsampling input images may evaluate potential solutions with respect to an objective function that is dependent on a sparse derivative prior second derivative(s) of the identify acceptable higher-resolution output image. The also be fidelity term(s) and/or prior(s) first solutions. include applying iteratively re-weighted least squares procedure in minimizing generating improved candidate from initial solution. identified solution stored as version image memory, made available subsequent operations editing application or other graphics application. produce sharp results are smooth along edges. implemented program instructions computer-readable storage media, executable by CPU GPU.