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Theses

Variable Bandwidth Image Models for Texture-Preserving Enhancement of Natural Images

Noura Azzabou
Abstract : This thesis is devoted to image enhancement and texture preservation issues. This task involves an image model that describes the characteristics of the recovered signal. Such a model is based on the definition of the pixels interaction that is often characterized by two aspects (i) the photometric similarity between pixels (ii) the spatial distance between them that can be compared to a given scale. The first part of the thesis, introduces novel non-parametric image models towards more appropriate and adaptive image description using variable bandwidth approximations driven from a soft classification in the image. The second part introduces alternative means to model observations dependencies from geometric point of view. This is done through statistical modeling of co-occurrence between observations and the use of multiple hypotheses testing and particle filters. The last part is devoted to novel adaptive means for spatial bandwidth selection and more efficient tools to capture photometric relationships between observations. The thesis concludes with providing other application fields of the last technique towards proving its flexibility toward various problem requirements.
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Submitted on : Friday, July 18, 2008 - 8:00:00 AM
Last modification on : Monday, October 19, 2020 - 11:07:49 AM
Long-term archiving on: : Friday, September 10, 2010 - 12:39:29 PM

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Noura Azzabou. Variable Bandwidth Image Models for Texture-Preserving Enhancement of Natural Images. Mathematics [math]. Ecole des Ponts ParisTech, 2008. English. ⟨pastel-00004041⟩

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