Searching for authors named Nicholas Ayache – sorted by Relevance.
92 documents found, showing 1 through 10.
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Medical Image Analysis and Simulation
- …This article introduces the research field of digital image analysis and simulation applied to medicine. Although the number...…
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Epidaure: a Research Project in Medical Image Analysis, Simulation and Robotics at INRIA
- …INTRODUCTION E PIDAURE is the name of a research project launched in 1989 at INRIA Rocquencourt, close to Paris, France. At that time, after a first experience of research in Computer Vision [1] in the group of O. Faugeras, I was very enthusiastic about the idea of transposing research resul…
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Machine Vision for Medicine of 21st Century
- …Medical Image Analysis, Surgery Simulation, and Medical Robotics are young scientific fields with huge potential applications and many challenging research problems. I will present a list of such problems including rigid and deformable registration of multimodal brain images, motion analysis from dy…
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Randomness and Geometric Features in Computer Vision
- …It is often necessary to handle randomness and geometry in computer vision, for instance to match and fuse together noisy geometric features such as points, lines or 3D frames, or to estimate a geometric transformation from a set of matched features. However, the proper handling of these geometric f…
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Soft Tissue Modeling for Surgery Simulation
- …this paper shows that LH performs better than the Quadratic Tetrahedron (10 nodes) even in a static linear elastic analysis…
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Spatio-temporal analysis of nonrigid motion from 4D data
- …We present a method for analysis of nonrigid motion in time sequences of volume images (4D data). In this method nonrigid motion of the deforming object contour is dynamically approximated by a deformable surface. In order to reduce the number of parameters describing the deformation, we make use of…
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Regularization Methods in Non-Rigid Registration: II. Isotropic Energies, Filters and Splines
- …The goal of this report is to propose some new regularization and filtering techniques specific to vector fields. Indeed, most…
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Uniform Distribution, Distance and Expectation Problems for Geometric Features Processing
- …Complex geometric features such as oriented points, lines or 3D frames are increasingly used in image processing and computer vision. However, processing these geometric features is far more difficult than processing points, and a number of paradoxes can arise. We establish in this article the basic…
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Fast Segmentation, Tracking, and Analysis of Deformable Objects
- …We present a physically-based deformable model which can be used to track and to analyze non-rigid motion of dynamic structures in time sequences of 2D or 3D medical images. The model considers an object undergoing an elastic deformation as a set of masses linked by springs, where the natural length…
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Classification of Nonrigid Motion in 3D Images using Physics-Based Vibration Analysis
- …We present a method for comparison and classification of nonrigid motion using a deformable model and the associated modal dynamics. Using the solid state physics formulation, we develop the equations of motion and the analytical expressions of vibration modes of a multidimensional elastically-defor…
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