Abstract
Superresolution is an image processing technique that estimates an original high-resolution image from its low-resolution and degraded observations. In superresolution tasks, there have been problems regarding the computational cost for the estimation of high-dimensional variables. These problems are now being overcome by the recent development of fast computers and the development of powerful computational techniques such as variational Bayesian approximation. This paper reviews a Bayesian treatment of the superresolution problem and presents its extensions based on hierarchical modeling by employing hidden variables.
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This type of superresolution is in particular called multiframe superresolution or reconstruction-based superresolution. There is another type of superresolution called example-based superresolution[5], which estimates a high-resolution image from only one image rather than from multiple images, based on a database developed in advance. Example-based methods constitute another large class but they are beyond the scope of this article.
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Kanemura, A., Maeda, Si., Fukuda, W. et al. Bayesian image superresolution and hidden variable modeling. J Syst Sci Complex 23, 116–136 (2010). https://doi.org/10.1007/s11424-010-9277-0
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DOI: https://doi.org/10.1007/s11424-010-9277-0