Séminaire Donnees et APprentissage Artificiel
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A Fuzzy Rule-Based Approach to Single Frame Super Resolution
Intervenant(s) : Nikhil Pal (Indian Statistical Institute, Calcutta)High quality image zooming is an important problem. The literature is rich with many methods for it. Some of the methods use multiple low resolution (LR) images of the same scene with different sub-pixel shifts as input to generate the high resolution (HR) images, while there are others, which use just one LR image to obtain the HR image. In this talk we shall discuss a novel fuzzy rule based single frame super resolution scheme. This is a patch based method, where for zooming each LR patch is replaced by a HR patch generated by a Takagi-Sugeno type fuzzy rule-based system. We shall discuss in details the generations of the training data, the initial generation of the fuzzy rules, refinement of the rules, and how to use such rules for generation of SR images. In this context we shall also discuss a Gaussian Mixture Regression (GMR) model for the same problem. To demonstrate the effectiveness and superiority of the proposed fuzzy rule-based system, we shall compare its performance with that of six methods including the GMR method in terms of multiple quality criteria.
Nikhil R. Pal is a Professor in the Electronics and Communication Sciences Unit of the Indian Statistical Institute. His current research interest includes bioinformatics, brain science, fuzzy logic, pattern analysis, neural networks, and evolutionary computation. He is currently the Vice President for Publications of the IEEE CIS. He is a Fellow of the National Academy of Sciences, India, a Fellow of the Indian National Academy of Engineering, a Fellow of the Indian National Science Academy, a Fellow of the International Fuzzy Systems Association (IFSA), and a Fellow of the IEEE, USA. Nikhil R. Pal is an invited professor of the UPMC from May 22 to June 20, 2015.
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