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<h2 style="font-size:1.2em;">Seminario de Probabilidad y Estadística</h2>
<h3 style="font-size:1em;">Título: <em>Conditional Gaussian Patch Models for Texture Synthesis</em></h3>
<h3 style="font-size:1em;">Expositor: Lara Raad <span style="font-weight:400;">(IIE, Udelar)</span></h3>
<div style="font-size:1em!important;"><p><b>Resumen: </b>Exemplar-based texture synthesis is defined as the process of generating, from an input texture sample, new texture images that are perceptually equivalent to the input. We model texture self-similarities with conditional Gaussian distributions in the patch space. These models are then embedded in a patch-based framework for texture synthesis. The Gaussian distribution for each patch is inferred from the set of its nearest neighbors in the patch space obtained from the input sample.<br/>A key challenge in patch-based approaches is how to seamlessly assemble the synthesized patches. We compare two strategies: the image quilting method [1], which blends overlapping patches by minimizing boundary discrepancies, and a conditional Gaussian approach [2], where new patches are constrained to match the overlapping region with previously synthesized content.<br/>The results show that it is possible to dispose of the quilting step in the case of periodic and pseudo-periodic textures. However, for more complex textures, the conditional models are less performing and are fast limited by the size of the texture input sample.</p>
<p>[1] Efros, Alexei A., and William T. Freeman. "Image quilting for texture synthesis and transfer." Proceedings of the 28th annual conference on Computer graphics and interactive techniques. 2001.<br/>[2] Raad, Lara, Agnès Desolneux, and Jean-Michel Morel. "A conditional multiscale locally Gaussian texture synthesis algorithm." Journal of Mathematical Imaging and Vision 56.2 (2016): 260-279.</p></div>
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<p style="font-size:1em;"><b>Viernes 16/5 a las 10:30</b><br>
<b>Salón 703. Facultad de Ingeniería.</b>
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<p style="font-size:1em;"><b>Contacto: </b>Alejandro Cholaquidis - <a href="mailto:acholaquidis@hotmail.com">acholaquidis@hotmail.com</a></p>
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<p><span>https://salavirtual-udelar.zoom.us/j/87951133501?pwd=aUZGIzluqNSQNDCYQFRT5rESb9aItr.1</span></p><hr>
Más seminarios en: <a href="http://www.cmat.edu.uy/seminarios">http://www.cmat.edu.uy/seminarios</a>
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