Publications by Virginia Estellers Casas

Jean-Philippe Thiran, Xavier Bresson, Dominique Zosso, Virginia Estellers Casas

We propose a segmentation method based on the geometric representation of images as two-dimensional manifolds embedded in a higher dimensional space. The segmentation is formulated as a minimization problem, where the contours are described by a level set ...

Institute of Electrical and Electronics Engineers2014

Surface reconstruction from microscopic images in optical lithography

Jean-Philippe Thiran, Virginia Estellers Casas, Maria Gabrani

We propose a shape-from-shading method to reconstruct surfaces of silicon wafers from images of printed circuits taken with scanning electron microscope. Our method combines the physical model of the optical acquisition system with prior knowledge about th ...

Institute of Electrical and Electronics Engineers2014

Surface Reconstruction From Microscopic Images in Optical Lithography

Jean-Philippe Thiran, Virginia Estellers Casas, Maria Gabrani

This paper presents a method to reconstruct 3D surfaces of silicon wafers from 2D images of printed circuits taken with a scanning electron microscope. Our reconstruction method combines the physical model of the optical acquisition system with prior knowl ...

Ieee-Inst Electrical Electronics Engineers Inc2014

LAYOUT ASSESSMENT METHOD AND SYSTEM

Frank Grégoire Jean de Morsier, Virginia Estellers Casas, Nathalie Casati, Maria Gabrani

Candidate layout patterns can be assessed using a sparse pattern dictionary of known design layout patterns by determining sparse coefficients for each candidate pattern, reconstructing the respective candidate pattern, and determining reconstruction error ...

U.S. Patent and Trademark Office; U.S. DEPARTMENT OF COMMERCE2013

Enhanced Compressed Sensing Recovery with Level Set Normals

Jean-Philippe Thiran, Xavier Bresson, Virginia Estellers Casas

We propose a compressive sensing algorithm that exploits geometric properties of images to recover images of high quality from few measurements. The image reconstruction is done by iterating the two following steps: 1) estimation of normal vectors of the i ...

2013

On dynamic stream weighting for Audio-Visual Speech Recognition

Jean-Philippe Thiran, Mihai Gurban, Virginia Estellers Casas

The integration of audio and visual information improves speech recognition performance, specially in the presence of noise. In these circumstances it is necessary to introduce audio and visual weights to control the contribution of each modality to the re ...

2012

An Efficient Algorithm for Level Set Method Preserving Distance Function

Jean-Philippe Thiran, Xavier Bresson, Dominique Zosso, Virginia Estellers Casas

The level set method is a popular technique for tracking moving interfaces in several disciplines including computer vision and fluid dynamics. However, despite its high flexibility, the original level set method is limited by two important numerical issue ...

Institute of Electrical and Electronics Engineers2012

Multi-pose lipreading and audio-visual speech recognition

Jean-Philippe Thiran, Virginia Estellers Casas

In this article, we study the adaptation of visual and audio-visual speech recognition systems to non-ideal visual conditions. We focus on overcoming the effects of a changing pose of the speaker, a problem encountered in natural situations where the speak ...

2012

Harmonic Active Contours for multichannel image segmentation

Jean-Philippe Thiran, Xavier Bresson, Dominique Zosso, Virginia Estellers Casas

We propose a segmentation method based on the geometric representation of images as surfaces embedded in a higher dimensional space, handling naturally multichannel images. The segmentation is based on an active contour embedded in the image manifold, alon ...

Ieee Service Center, 445 Hoes Lane, Po Box 1331, Piscataway, Nj 08855-1331 Usa2011

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Virginia Estellers Casas

Harmonic Active Contours

Surface reconstruction from microscopic images in optical lithography

Surface Reconstruction From Microscopic Images in Optical Lithography

LAYOUT ASSESSMENT METHOD AND SYSTEM

Geometric Variational Models for Inverse Problems in Imaging

Enhanced Compressed Sensing Recovery with Level Set Normals

On dynamic stream weighting for Audio-Visual Speech Recognition

An Efficient Algorithm for Level Set Method Preserving Distance Function

Multi-pose lipreading and audio-visual speech recognition

Harmonic Active Contours for multichannel image segmentation

Graph Chatbot

Chat with Graph Search

Harmonic Active Contours

Surface reconstruction from microscopic images in optical lithography

LAYOUT ASSESSMENT METHOD AND SYSTEM

On dynamic stream weighting for Audio-Visual Speech Recognition

An Efficient Algorithm for Level Set Method Preserving Distance Function

Enhanced Compressed Sensing Recovery with Level Set Normals

Multi-pose lipreading and audio-visual speech recognition

Harmonic Active Contours for multichannel image segmentation

Surface Reconstruction From Microscopic Images in Optical Lithography

Geometric Variational Models for Inverse Problems in Imaging