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Image superresolution

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The goal of superresolution is to generate a high-resolution image by integrating low-resolution degraded observed images. We propose a Bayesian approach whose prior is modeled as a compound Gaussian Markov random field (MRF). This approach is advantageous in preserving discontinuity in the original image, in comparison to the existing single-layer Gaussian MRF models. To perform the computation efficiently, we introduce a variatonal EM algorithm.

This talk is part of the Machine Learning Journal Club series.

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