Stéphane Grabli

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Figure 1: A programmable approach unifies the specification of line drawing styles, allowing for various complex styles descriptions. Left: Use of occlusion information to emphasize some parts in the scene. Right: A sketchy style based on the use of " construction lines ". Abstract This paper introduces a programmable approach to non-photorealistic line(More)
We introduce an image-based method for modeling a specific subject's hair. The principle of the approach is to study the variations of hair illumination under controlled illumination. The use of a stationary viewpoint and the assumption that the subject is still allows us to work with perfectly registered images: all pixels in an image sequence represent(More)
Freestyle: Non-Photorealistic Renderer of line-drawings from 3D scenes including a procedural language for the style description. Released under the GPL license. 2000 Research and Development engineer at Dassault-Systèmes, the CAD/CAM leader company, within the CATIA 3D Graphics team. Development in C++ on Windows and UNIX. 1999 Four months internship(More)
This article introduces a programmable approach to nonphotorealistic line drawings from 3D models, inspired by programmable shaders in traditional rendering. This approach relies on the assumption generally made in NPR that style attributes (color, thickness, etc.) are chosen depending on generic properties of the scene such as line characteristics or depth(More)
This paper introduces a procedural approach to non-photorealistic line drawing from 3D models. The approach is inspired both by procedural shaders in classical rendering and by the power of procedural modeling. We propose a new image creation model where all operations are controlled procedurally. A view map describing all relevant support lines in the(More)
One subtle artifact which still often reveals the synthetic nature of a digital creature on screen is the stretching of a supposedly rigid feature, such as a dinosaur scale or a callus, under deformation. We introduce a technique which attempts to preserve the shape of user-defined features when a 3D mesh deforms. Our approach makes no restriction on the(More)
Introduction: The goal of our work is to develop a scalable method for egomotion and environment capture. Existing methods for simultaneous localization and mapping (SLAM) and Structure from Motion (SFM) can perform well in local, small-scale regions, but struggle when applied to larger environments. The concurrent recovery of scene structure and the sensor(More)
Figure 1: A programmable approach unifies the specification of line drawing styles, allowing for various complex styles descriptions. Left: Use of occlusion information to emphasize some parts in the scene. Right: A sketchy style based on the use of " construction lines ". Abstract This paper introduces a programmable approach to non-photorealistic line(More)
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