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BEGIN:STANDARD
DTSTART:19920301T030000
TZOFFSETFROM:+1100
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BEGIN:VEVENT
DTSTAMP:20191203T080637Z
LOCATION:Great Hall 1&2
DTSTART;TZID=Australia/Brisbane:20191117T190300
DTEND;TZID=Australia/Brisbane:20191117T190400
UID:siggraphasia_SIGGRAPH Asia 2019_sess222_tog_102@linklings.com
SUMMARY:Terrain Amplification with Implicit 3D Features
DESCRIPTION:Technical Papers Fast-Forward \n\nTerrain Amplification with I
 mplicit 3D Features\n\nParis, Galin, Peytavie, Guérin, Gain\n\nWhile three
 -dimensional landforms, such as arches and overhangs, occupy a relatively 
 small proportion of most computer generated landscapes, they are distincti
 ve and dramatic and have an outsize visual impact. Unfortunately, the domi
 nant heightfield representation of terrain precludes such features, and ex
 isting in-memory volumetric structures are too memory intensive to handle 
 larger scenes. \n\nIn this paper, we present a novel memory-optimized par
 adigm for representing and generating volumetric terrain based on implicit
  surfaces. We encode feature shapes and terrain geology using construction
  trees that arrange and combine implicit primitives. The landform primitiv
 es themselves are positioned using Poisson sampling, built using open shap
 e grammars guided by stratified erosion and invasion percolation processes
 , and, finally, queried during polygonization. Users can also interactivel
 y author landforms using high-level modeling tools to create or edit the u
 nderlying construction trees, with support for iterative cycles of editing
  and simulation.\n\nWe demonstrate that our framework is capable of impor
 ting existing large-scale heightfield terrains and amplifying them with su
 ch diverse structures as slot canyons, sea arches, stratified cliffs, fiel
 ds of hoodoos, and complex karst cave networks.\n\nRegistration Category: 
 Platinum Pass, Full Conference Pass, Full Conference One-Day Pass, Basic C
 onference Pass, Student One-Day Pass, Exhibitor Pass
URL:https://sa2019.conference-program.com/presentation?id=tog_102&sess=ses
 s222
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