Pattern Based Procedural Textures Sylvain Lefebvre Fabrice Neyret iMAGIS - GRAVIR / IMAG - INRIA .
Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2...
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Transcript of Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2...
![Page 1: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/1.jpg)
Surface Aging by Impacts
E. Paquette1,2, P. Poulin1, G. Drettakis2
1 Université de Montréal
2 iMAGIS/GRAVIR-REVES-INRIA
![Page 2: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/2.jpg)
Université de MontréaliMAGISGI 2001
Context
• Realistic rendering• Synthetic objects look too perfect• Aging effects
![Page 3: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/3.jpg)
Université de MontréaliMAGISGI 2001
Previous Work
• Specific effects– Dirt & dust [Miller94, Hsu95]– Sculpting & tracks [Wang95, Sumner98]– Weathering [Dorsey96b, Dorsey99]– Corrosion [Dorsey96a, Merillou01]– Cracks & fracture [Hirota98, O’Brien99]– Scratches [Merillou01]
![Page 4: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/4.jpg)
Université de MontréaliMAGISGI 2001
Previous Work
• Specific effects– Dirt & dust [Miller94, Hsu95]– Sculpting & tracks [Wang95, Sumner98]– Weathering [Dorsey96b, Dorsey99]– Corrosion [Dorsey96a, Merillou01]– Cracks & fracture [Hirota98, O’Brien99]– Scratches [Merillou01]
![Page 5: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/5.jpg)
Université de MontréaliMAGISGI 2001
Previous Work
• Specific effects– Dirt & dust [Miller94, Hsu95]– Sculpting & tracks [Wang95, Sumner98]– Weathering [Dorsey96b, Dorsey99]– Corrosion [Dorsey96a, Merillou01]– Cracks & fracture [Hirota98, O’Brien99]– Scratches [Merillou01]
![Page 6: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/6.jpg)
Université de MontréaliMAGISGI 2001
Previous Work
• Imperfection systems [Becket90, Wong97]
![Page 7: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/7.jpg)
Université de MontréaliMAGISGI 2001
Impacts
• Impacts on surface– Scratches– Abrasion– Compaction
![Page 8: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/8.jpg)
Université de MontréaliMAGISGI 2001
Compaction
• Surface compressed• Many impacts• Empirical simulation
![Page 9: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/9.jpg)
Université de MontréaliMAGISGI 2001
Real Examples
![Page 10: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/10.jpg)
Université de MontréaliMAGISGI 2001
Motivation
• Empirical simulation– Simplicity– Efficiency– User interaction
![Page 11: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/11.jpg)
Université de MontréaliMAGISGI 2001
Outline
• Overview• Inputs• Simulation• Results• Conclusion
![Page 12: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/12.jpg)
Université de MontréaliMAGISGI 2001
Overview
userparameters
tools
originalobject
agedobject
intersect deformrefine
![Page 13: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/13.jpg)
Université de MontréaliMAGISGI 2001
Original Object
• Mesh– Common representation– Triangle mesh
![Page 14: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/14.jpg)
Université de MontréaliMAGISGI 2001
User Interface
• Tools– size
• Object deformation– compaction volume
• Impacts– location– direction
![Page 15: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/15.jpg)
Université de MontréaliMAGISGI 2001
Simulation
• Intersection• Refinement• Deformation
userparameters
tools
originalobject
agedobject
intersect deformrefine
![Page 16: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/16.jpg)
Université de MontréaliMAGISGI 2001
Intersection
tool
path
object
intersectedfaces
![Page 17: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/17.jpg)
Université de MontréaliMAGISGI 2001
Tool Footprint
• Footprint of tool on object
• Sharp edges(curvature)
• Perpendicular edges(to the path)
Tools
![Page 18: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/18.jpg)
Université de MontréaliMAGISGI 2001
Tool Footprint
• Footprint of tool on object
• Sharp edges(curvature)
• Perpendicular edges(to the path)
Lessrefinement
Morerefinement
Tools
![Page 19: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/19.jpg)
Université de MontréaliMAGISGI 2001
Tool Footprint
• Footprint of tool on object
• Sharp edges(curvature)
• Perpendicular edges(to the path)
Lessrefinement
Morerefinement
tool path
Tools
![Page 20: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/20.jpg)
Université de MontréaliMAGISGI 2001
Feature Points
• Distribute feature points• Tool edges
– curvature (difference of normals)– perpendicular to path– length wrt user feature size– jittering
![Page 21: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/21.jpg)
Université de MontréaliMAGISGI 2001
Feature Points
• Points representing required refinement
toolpath
path parallelpath perpendicular
border (curvature)
![Page 22: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/22.jpg)
Université de MontréaliMAGISGI 2001
Mesh Refinement
• Project feature points• Refine if nb > threshold
tool impact
![Page 23: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/23.jpg)
Université de MontréaliMAGISGI 2001
Mesh Refinement
• Quaternary subdivision• Restriction and anchoring
– avoid T-vertices
subdivide restrict anchor
![Page 24: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/24.jpg)
Université de MontréaliMAGISGI 2001
Problem: Folding
• Try to avoid surface folding
tool
object
foldedsurface
![Page 25: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/25.jpg)
Université de MontréaliMAGISGI 2001
Problem: Self-intersection
• Try to avoid self-intersection
object
self-intersects
![Page 26: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/26.jpg)
Université de MontréaliMAGISGI 2001
Deformation Direction
• Constrain surface movement• Reduce self-intersections and folding
deformationdirections
![Page 27: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/27.jpg)
Université de MontréaliMAGISGI 2001
Deformation Steps
object
vertex
![Page 28: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/28.jpg)
Université de MontréaliMAGISGI 2001
Deformation Steps
intersectedface
tool
![Page 29: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/29.jpg)
Université de MontréaliMAGISGI 2001
Deformation Steps
featurepoints tool
![Page 30: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/30.jpg)
Université de MontréaliMAGISGI 2001
Deformation Steps
projectedfeature points
tool
![Page 31: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/31.jpg)
Université de MontréaliMAGISGI 2001
Deformation Steps
toolrefinedfaces
![Page 32: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/32.jpg)
Université de MontréaliMAGISGI 2001
Deformation Steps
copy ofrefined faces
tool
![Page 33: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/33.jpg)
Université de MontréaliMAGISGI 2001
Deformation Steps
movecopy vertices
wrt tool
tool
compaction volume
![Page 34: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/34.jpg)
Université de MontréaliMAGISGI 2001
Deformation Steps
project along deformation direction
on copy
![Page 35: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/35.jpg)
Université de MontréaliMAGISGI 2001
Deformation Steps
deformedsurface
![Page 36: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/36.jpg)
Université de MontréaliMAGISGI 2001
Output
• Aged object• Recompute normals
N?
![Page 37: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/37.jpg)
Université de MontréaliMAGISGI 2001
Normals
• Weighted averageN = wiNi
• weight ~ face subtended angle
NN0
N5
N1
N4
N2
N3
![Page 38: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/38.jpg)
Université de MontréaliMAGISGI 2001
Output
• 3D viewer• Save
– Render with any standard renderer(we use Maya)
![Page 39: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/39.jpg)
Université de MontréaliMAGISGI 2001
Video
![Page 40: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/40.jpg)
Université de MontréaliMAGISGI 2001
Target Real Images
• Real photographs as goals
trunk
![Page 41: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/41.jpg)
Université de MontréaliMAGISGI 2001
Target Real Images
stairs door
![Page 42: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/42.jpg)
Université de MontréaliMAGISGI 2001
Target Real Images
metalplate
door&
frame
![Page 43: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/43.jpg)
Université de MontréaliMAGISGI 2001
User Interaction
• Trial and error– tools– tool size– compaction volume– impact location and direction
• 30 minutes to 2 hours user time per object
![Page 44: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/44.jpg)
Université de MontréaliMAGISGI 2001
Synthetic Aged Trunk
real aged clean
![Page 45: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/45.jpg)
Université de MontréaliMAGISGI 2001
Synthetic Aged Door
real aged clean
![Page 46: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/46.jpg)
Université de MontréaliMAGISGI 2001
Synthetic Aged Door
real aged
![Page 47: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/47.jpg)
Université de MontréaliMAGISGI 2001
Synthetic Aged Door Frame
real aged clean
![Page 48: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/48.jpg)
Université de MontréaliMAGISGI 2001
Synthetic Aged Stairs
real aged clean
![Page 49: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/49.jpg)
Université de MontréaliMAGISGI 2001
Synthetic Aged Stairs
real aged
![Page 50: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/50.jpg)
Université de MontréaliMAGISGI 2001
Synthetic Aged Metal Plate
real aged clean
![Page 51: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/51.jpg)
Université de MontréaliMAGISGI 2001
Simulation Statistics
Stairs TrunkFram
ePlate Door
Impacts 128 149 300 234 276
Total(seconds)
4.13s 4.78s 7.59s 6.17s 8.54s
Average(milliseconds)
32ms 32ms 25ms 26ms 31msAthlon 600 MHz Linux PC
![Page 52: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/52.jpg)
Université de MontréaliMAGISGI 2001
Simulation Statistics
Mesh size
Stairs Trunk Frame Plate Door
original 6 k 2 k 352 2 1 k
final 22 k 18 k 23 k 20 k 25 k
regular232000
k80000 k 11000 k 16000 k 32000 k
![Page 53: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/53.jpg)
Université de MontréaliMAGISGI 2001
Rendering Time
SGI Onyx 4 x R4400, 200 MHz
100%120% 130%
180%
115%
0%
50%
100%
150%
200%
Stairs Trunk Frame Plate Door
Clean Aged
![Page 54: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/54.jpg)
Université de MontréaliMAGISGI 2001
Conclusion
• Increased realism• Adaptive refinement• Reduced
– folding– self-intersection
• Simple & Efficient• Intuitive & easy to use
![Page 55: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/55.jpg)
Université de MontréaliMAGISGI 2001
Future Work
• Surface– refinement, representation
• Impacts specification– from possible results– extraction from images
• Other effects– pealing, abrasion, scratches, dirt
![Page 56: Surface Aging by Impacts E. Paquette 1,2, P. Poulin 1, G. Drettakis 2 1 Université de Montréal 2 iMAGIS/GRAVIR-REVES-INRIA.](https://reader035.fdocuments.in/reader035/viewer/2022062518/56649d035503460f949d6c30/html5/thumbnails/56.jpg)
Université de MontréaliMAGISGI 2001
Acknowledgments
• Grants & scholarships– FCAR, NSERC, MRI-MEQ
• Rendering software– Alias|Wavefront
• iMAGIS is a joint project of CNRS/INRIA/UJF/INPG