Total subset variation prior

We propose total subset variation (TSV), a convexity preserving generalization of the total variation (TV) prior, for higher order clique MRF. A proposed differentiable approximation of the TSV prior makes it amenable for use in large images (e.g. 1080p). A convex relaxation of sub-exponential distribution is proposed as a criterion to determine the parameters of the optimization problem resulting from the TSV prior. For the super-resolution application, experiments show reconstruction error improvement with respect to the TV and other methods.

• Type: Journal
• Year: 2010
• Where: ICIP
• Authors: Sanjeev Kumar, Truong Q. Nguyen
• Keywords: ICIP 2010, Image Processing, Order Clique Mrf, Reconstruction Error Improvement, Total Subset Variation