Non-parametric image super-resolution using multiple images

In this paper, we present a novel learning based framework for performing super-resolution using multiple images. We model the image as an undirected graphical model over image patches in which the compatibility functions are represented as non-parametric kernel densities which are learnt from training data. The observed images are translation rectified and stitched together onto a high resolution grid and the inference problem reduces to estimating unknown pixels in the grid. We solve the inference problem by using an extended version of the non-parametric belief propagation algorithm. We show experimental results on synthetic digit images and real face images from the ORL face dataset.

• Type: Conference
• Year: 2005
• Where: ICIP
• Authors: Mithun Das Gupta, ShyamSundar Rajaram, Nemanja Petrovic, Thomas S. Huang
• Keywords: ICIP 2005, Image Processing, Non-parametric Image Super-resolution