Description

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Comments :
Texels are used to built complex geometries (foliage, grass, fur, fabric, hair...) with a model looking like texture, with thickness. Good properties are in the computation time, the image quality (few aliasing), and more, the cost 'moralization' : cost is now linked to the visible detail amount, and no longer to the database detail amount.

Results

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( images and animations are copyrighted: no public use is allowed without author autorization. )

• NB: Some videos are available on YouTube.
  examples of typical complex scenes
  set of complex scene pictures
  set of corresponding texels
  images published in the GI'95 proceeding
  images published in the proceeding de EWAS'95
  
  -- december, 1994 --
  

  ( images and animations are copyrighted: no public use is allowed without author autorization. )

  mpeg animations: forest hill
  hill alone
  texel mapping
  reference texel building
  résultat: forest hill (1.6 Mo)
  mpeg animations: wild torus
  texels mapping upon the torus
  mapping deformation (like `hair-doing')
  (cyclic) reference texel building
  texels mapping and deformation
  result: torus with fur (1.8 Mo)
  mpeg animations: buildings under construction
  cubic support shapes (2.3 Mo)
  reference texel
  result: scaffoldings (2 Mo)
  result: zoom (1.4 Mo)
  mpeg animation: maze
  result: deep zoom (1.9 Mo)
  
  -- april, 1995 --
  

  ( images and animations are copyrighted: no public use is allowed without author autorization. )

  animated texels (mpeg) :
  flag under the wind (1.2 Mo) ( Xavier Provot model )
  a detail of the flag (0.70 Mo)
  lawn under the wind (0.75 Mo) -- jully, 1995
  
  -- december, 1995 --
  

  ( images and animations are copyrighted: no public use is allowed without author autorization. )

  landscapes using volumetric texture (mpeg and jpeg) :
  flight over an amazonian forest (4.1 Mo)
  single image
  dense forest (single image)
  flight over a orchad (2.6 Mo)
  single image
  again: animated lawn (0.75 Mo)
  single image
  
  -- spring 1996 --
  

  ( images and animations are copyrighted: no public use is allowed without author autorization. )

  
  Other images (numerous!) made during my PhD.
  
  
  
  -- June 1998 --
  Texels in interactive time (work done with Alexandre Meyer), considering a volume as a set of textured slices, which allow us to use the graphics hardware
  (cf the detailled page, and the EWR'98 paper).
  
  A single texel, before and after deformation (manipulations are done in real time):
  
  
  Mapping on a plan and on a sphere, replresenting 13 million of virtual polygons. The display is done on O2 with a few images per seconds.
  
  
  Grazing view of the plane.
  
  
  A few trees.
  
  

  ( images and animations are copyrighted: no public use is allowed without author autorization. )

  -- January 1999 --
  Texels without distortion in interactive time (using the triangular patterns technique).
  

  -- 2001 --

  Texels in real-time with interactive shading.
  Images, anims, see report'01

  -- 2003-2004 --

  Real-time rendering of forests (adaptive texels, aperiodic mapping).
  Images, anims, see publi EGSR'04 : Rendering Forest Scenes in Real-Time
  Texels with per-pixel shading and shadowing.
  Images, anims, see publi siggraph poster : GPU-Based Lighting and Shadowing of Complex Natural Scenes

Augmented Reality (94-96)

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During my PhD, I have also contributed to Realite Enriched by Synthesis (see also here).
RES allows the 3D-mixing of a synthetic animation and a video.
See the publications at NR'95 and at RFIA'96.

Bibliography

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Personal Publications

During the PhD:
AFIG'94 (texels)
GI'95 (texels)
EWAS'95 (animated texels)
NR'95 (RES)
RFIA'96 (RES)
RR: spacial deformations managed at rendering time
RR: texture clipping
EWR'96 (texels construction and mapping)
my PhD (June 1996)

After the PhD:
TVCG vol 4(1) 01-03/1998 (synthesis)
EWR'98 : Interactive Volumetric Textures
EGSR'04 : Rendering Forest Scenes in Real-Time
siggraph poster : GPU-Based Lighting and Shadowing of Complex Natural Scenes

Related Publications

Kajiya & Kay, "Rendering Fur with Three Dimensional Textures", Computer Graphics (SIGGRAPH '89 Proceedings), p 271-280
Shinya, "Hierarchical 3D texture", Graphics Interface'92 Workshop on Local Illumination, p 61-67
Noma, "Bridging Between Surface Rendering and Volume Rendering for Multi-Resolution Display", EWR'95
Fournier, "Normal distribution functions and multiple surfaces", Graphics Interface'92 Workshop on Local Illumination, p 45-52

Liens et travaux relatifs aux Textures Volumiques (ou texels)

Volumetric textures at PDI (Daniel Wexler)
Karim Ratim (LIGUM,Montreal)
Multiresolution Rendering of Complex Botanical Scenes (Dana Marshall, Austin - GI'97)
Rendering Fur with Texels (Andrian Skilling)
Rendering Microsurface-Based Textures With Texels (Caltech)
Frederic Elisei (VIS)
Hoppe (Microsoft)
tests done at PDI by Daniel Wexler

Contact

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