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 Xavier Granier

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Average citations per article4.29
Citation Count146
Publication count34
Publication years1999-2016
Available for download17
Average downloads per article449.53
Downloads (cumulative)7,642
Downloads (12 Months)365
Downloads (6 Weeks)42
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34 results found Export Results: bibtexendnoteacmrefcsv

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1 published by ACM
July 2016 SIGGRAPH '16: ACM SIGGRAPH 2016 Talks
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 1,   Downloads (12 Months): 33,   Downloads (Overall): 135

Full text available: PDFPDF
Monte-Carlo integration techniques for global illumination are popular on GPUs thanks to their massive parallel architecture, but efficient implementation remains challenging. The use of randomly decorrelated low-discrepancy sequences in the path-tracing algorithm allows faster visual convergence. However, the parallel tracing of incoherent rays often results in poor memory cache utilization, ...
Keywords: jittering, path-tracing, ray coherence, sampling

2
June 2015 GI '15: Proceedings of the 41st Graphics Interface Conference
Publisher: Canadian Information Processing Society
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 1,   Downloads (12 Months): 10,   Downloads (Overall): 50

Full text available: PDFPDF
We present a method to synthesize procedural models with global structures, such as growth plants, on existing surfaces at interactive time. More generally, our approach extends shape grammars to enable context-sensitive procedural generation on the GPU. Central to our framework is the unified representation of external contexts as texture maps. ...

3 published by ACM
June 2014 Journal on Computing and Cultural Heritage (JOCCH) - Special Issue on Interacting with the Past: Volume 7 Issue 2, July 2014
Publisher: ACM
Bibliometrics:
Citation Count: 1
Downloads (6 Weeks): 21,   Downloads (12 Months): 117,   Downloads (Overall): 542

Full text available: PDFPDF
Cultural heritage artifacts often contain details that are difficult to distinguish due to aging effects such as erosion. We propose the revealing flashlight , a new interaction and visualization technique in spatial augmented reality that helps to reveal the detail of such artifacts. We locally and interactively augment a physical ...
Keywords: Spatial interaction techniques, spatial augmented reality, tangible interaction, expressive visualization

4 published by ACM
November 2013 IHM '13: Proceedings of the 25th Conference on l'Interaction Homme-Machine
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 0,   Downloads (12 Months): 5,   Downloads (Overall): 43

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La Réalité Augmentée Spatiale (RAS) permet d'enrichir des objets du monde réel par apposition d'informations numériques à l'aide de vidéo-projecteurs. Elle présente un fort potentiel pour introduire de nouvelles techniques d'interaction, car la co-localisation de l'espace de rendu et de l'espace d'interaction dans le monde réel permet de se baser ...
Keywords: Réalité Augmentée Spatiale, Visualisation expressive, Interaction tangible

5
June 2012 Computer Graphics Forum: Volume 31 Issue 4, June 2012
Publisher: John Wiley & Sons, Inc.
Bibliometrics:
Citation Count: 3

In this paper, we present an analysis technique that leverages the complexity found in detailed 3D models for illustrative shading purposes. Given a smooth base surface with relief, it locates relief features (concavities, convexities and inflections) around each surface point and at multiple scales, using cubic-polynomial fitting. This object-space, per-vertex ...

6
April 2012 IEEE Transactions on Visualization and Computer Graphics: Volume 18 Issue 4, April 2012
Publisher: IEEE Educational Activities Department
Bibliometrics:
Citation Count: 5

In augmented reality, one of key tasks to achieve a convincing visual appearance consistency between virtual objects and video scenes is to have a coherent illumination along the whole sequence. As outdoor illumination is largely dependent on the weather, the lighting condition may change from frame to frame. In this ...
Keywords: Augmented reality, illumination coherence, moving cameras.

7
September 2011 CADGRAPHICS '11: Proceedings of the 2011 12th International Conference on Computer-Aided Design and Computer Graphics
Publisher: IEEE Computer Society
Bibliometrics:
Citation Count: 0

We introduce a non-uniform composition that integrates multiple rendering styles in a picture driven by an importance map. This map, either issued from saliency estimation or designed by a user, is introduced both in the creation of the multiple styles and in the final composition. Our approach accommodates a variety ...
Keywords: stylization, nonphotorealistic rendering, importance map, composition

8
August 2011 IEEE Transactions on Visualization and Computer Graphics: Volume 17 Issue 8, August 2011
Publisher: IEEE Educational Activities Department
Bibliometrics:
Citation Count: 3

Based on the observation that shading conveys shape information through intensity gradients, we present a new technique called Radiance Scaling that modifies the classical shading equations to offer versatile shape depiction functionalities. It works by scaling reflected light intensities depending on both surface curvature and material characteristics. As a result, ...
Keywords: Expressive rendering, NPR, shape depiction, shading, global illumination.

9 published by ACM
December 2010 SA '10: ACM SIGGRAPH ASIA 2010 Sketches
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 3,   Downloads (12 Months): 10,   Downloads (Overall): 118

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Normal mapping is a compact representation to create visually rich shapes and shading effects. In this paper, we introduce a new paint-based approach to edit a normal map according to the intended shading, from realistic to non-realistic ones. For this purpose, we have formulated a normal-from-shading operation as a quadratic ...
Keywords: paint-based interface, normal map, normal from shading

10 published by ACM
November 2010 VRST '10: Proceedings of the 17th ACM Symposium on Virtual Reality Software and Technology
Publisher: ACM
Bibliometrics:
Citation Count: 1
Downloads (6 Weeks): 0,   Downloads (12 Months): 11,   Downloads (Overall): 185

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We introduce an on-line framework for the visualizing of underground structures that improves X-Ray vision and Focus and Context Rendering for Augmented Reality. Our approach does not require an accurate reconstruction of the 3D environment and runs on-line on modern hardwares. For these purposes, we extract characteristic features from video ...
Keywords: on-line video processing, context+focus rendering, x-ray vision, augmented reality

11
September 2010 Journal of Computer Science and Technology: Volume 25 Issue 5, September 2010
Publisher: Institute of Computing Technology
Bibliometrics:
Citation Count: 0

This paper introduces a caching technique based on a volumetric representation that captures low-frequency indirect illumination. This structure is intended for efficient storage and manipulation of illumination. It is based on a 3D grid that stores a fixed set of irradiance vectors. During preprocessing, this representation can be built using ...
Keywords: photon mapping, caching for global illumination, particle tracing

12 published by ACM
February 2010 I3D '10: Proceedings of the 2010 ACM SIGGRAPH symposium on Interactive 3D Graphics and Games
Publisher: ACM
Bibliometrics:
Citation Count: 11
Downloads (6 Weeks): 3,   Downloads (12 Months): 25,   Downloads (Overall): 374

Full text available: PDFPDF
We present a novel technique called Radiance Scaling for the depiction of surface shape through shading. It adjusts reflected light intensities in a way dependent on both surface curvature and material characteristics. As a result, diffuse shading or highlight variations become correlated to surface feature variations, enhancing surface concavities and ...
Keywords: shape depiction, NPR, expressive rendering

13 published by ACM
July 2009 ACM Transactions on Graphics (TOG) - Proceedings of ACM SIGGRAPH 2009: Volume 28 Issue 3, August 2009
Publisher: ACM
Bibliometrics:
Citation Count: 17
Downloads (6 Weeks): 3,   Downloads (12 Months): 32,   Downloads (Overall): 1,213

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Recent research on the human visual system shows that our perception of object shape relies in part on compression and stretching of the reflected lighting environment onto its surface. We use this property to enhance the shape depiction of 3D objects by locally warping the environment lighting around main surface ...
Also published in:
July 2009  SIGGRAPH '09: ACM SIGGRAPH 2009 papers

14
August 2008 SG '08: Proceedings of the 9th international symposium on Smart Graphics
Publisher: Springer-Verlag
Bibliometrics:
Citation Count: 0

Sketching, as an intuitive tool for creation and edition of 3D prototypes, is a topic of increasing interest to the community. These approaches are based on the natural ability of humans to quickly draw in 2D some characteristic curves of 3D objects. Unfortunately, some 3D modeling operations - like positioning ...
Keywords: Interaction Devices, Large Display, Sketch-based 3D Modeling

15 published by ACM
August 2008 SIGGRAPH '08: ACM SIGGRAPH 2008 talks
Publisher: ACM
Bibliometrics:
Citation Count: 0
Downloads (6 Weeks): 0,   Downloads (12 Months): 6,   Downloads (Overall): 191

Full text available: PDFPDF

16 published by ACM
August 2008 Web3D '08: Proceedings of the 13th international symposium on 3D web technology
Publisher: ACM
Bibliometrics:
Citation Count: 1
Downloads (6 Weeks): 0,   Downloads (12 Months): 15,   Downloads (Overall): 332

Full text available: PDFPDF
Streaming data to efficiently render complex 3D scenes in presence of global illumination is still a challenging task. In this paper, we introduce a new data structure based on a 3D grid of irradiance vectors to store the indirect illumination appearing on complex and detailed objects: the Irradiance Vector Grid ...
Keywords: 3D streaming, global illumination

17
June 2008 SBM'08: Proceedings of the Fifth Eurographics conference on Sketch-Based Interfaces and Modeling
Publisher: Eurographics Association
Bibliometrics:
Citation Count: 4

In computer graphics, highlights capture much of the appearance of light reflection off a surface. They are generally limited to pre-defined models (e.g., Phong, Blinn) or to measured data. In this paper, we introduce new tools and a corresponding highlight model to provide computer graphics artists a more expressive approach ...

18 published by ACM
June 2008 NPAR '08: Proceedings of the 6th international symposium on Non-photorealistic animation and rendering
Publisher: ACM
Bibliometrics:
Citation Count: 13
Downloads (6 Weeks): 0,   Downloads (12 Months): 16,   Downloads (Overall): 575

Full text available: PDFPDF
Shape depiction in non-photorealistic rendering of 3D objects has mainly been concerned with the extraction of contour lines, which are generally detected by tracking the discontinuities of a given set of shape features varying on the surface and/or the picture plane. In this paper, we investigate another approach: the depiction ...

19
June 2007 SG '07: Proceedings of the 8th international symposium on Smart Graphics
Publisher: Springer-Verlag
Bibliometrics:
Citation Count: 2

For the generation of freeform 3D models, one of the most intuitive solution is to use sketch-based modeling environments. Unfortunately, since the user interface relies upon the analyse of sketches in order to determine which action is requested by the user, the possible amount of different operations can be limited. ...
Keywords: Sketch-based 3D Modeling

20 published by ACM
May 2007 GI '07: Proceedings of Graphics Interface 2007
Publisher: ACM
Bibliometrics:
Citation Count: 11
Downloads (6 Weeks): 2,   Downloads (12 Months): 18,   Downloads (Overall): 428

Full text available: PDFPDF
For the generation of freeform models, sketching interfaces have raised an increasing interest due to their intuitive approach. It is now possible to infer a 3D model directly from a sketched curved. Unfortunately, a limit of current systems is the poor quality of the skeleton automatically extracted from this silhouette, ...
Keywords: implicit surface, modeling, sketching, FreeForm surfaces



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