A model for anisotropic reflection
SIGGRAPH '90 Proceedings of the 17th annual conference on Computer graphics and interactive techniques
Measuring and modeling anisotropic reflection
SIGGRAPH '92 Proceedings of the 19th annual conference on Computer graphics and interactive techniques
Reflection from layered surfaces due to subsurface scattering
SIGGRAPH '93 Proceedings of the 20th annual conference on Computer graphics and interactive techniques
Generalization of Lambert's reflectance model
SIGGRAPH '94 Proceedings of the 21st annual conference on Computer graphics and interactive techniques
Creation and rendering of realistic trees
SIGGRAPH '95 Proceedings of the 22nd annual conference on Computer graphics and interactive techniques
Hierarchical rendering of trees from precomputed multi-layer z-buffers
Proceedings of the eurographics workshop on Rendering techniques '96
Realistic modeling and rendering of plant ecosystems
Proceedings of the 25th annual conference on Computer graphics and interactive techniques
Fast calculation of soft shadow textures using convolution
Proceedings of the 25th annual conference on Computer graphics and interactive techniques
SIGGRAPH '85 Proceedings of the 12th annual conference on Computer graphics and interactive techniques
Construction of fractal objects with iterated function systems
SIGGRAPH '85 Proceedings of the 12th annual conference on Computer graphics and interactive techniques
SIGGRAPH '85 Proceedings of the 12th annual conference on Computer graphics and interactive techniques
A microfacet-based BRDF generator
Proceedings of the 27th annual conference on Computer graphics and interactive techniques
A Reflectance Model for Computer Graphics
ACM Transactions on Graphics (TOG)
Development models of herbaceous plants for computer imagery purposes
SIGGRAPH '88 Proceedings of the 15th annual conference on Computer graphics and interactive techniques
Plant models faithful to botanical structure and development
SIGGRAPH '88 Proceedings of the 15th annual conference on Computer graphics and interactive techniques
The use of positional information in the modeling of plants
Proceedings of the 28th annual conference on Computer graphics and interactive techniques
Proceedings of the 29th annual conference on Computer graphics and interactive techniques
Fast, arbitrary BRDF shading for low-frequency lighting using spherical harmonics
EGRW '02 Proceedings of the 13th Eurographics workshop on Rendering
Interactive Rendering of Trees with Shading and Shadows
Proceedings of the 12th Eurographics Workshop on Rendering Techniques
All-frequency shadows using non-linear wavelet lighting approximation
ACM SIGGRAPH 2003 Papers
Clustered principal components for precomputed radiance transfer
ACM SIGGRAPH 2003 Papers
A geometry-based soft shadow volume algorithm using graphics hardware
ACM SIGGRAPH 2003 Papers
Linear light source reflectometry
ACM SIGGRAPH 2003 Papers
Rendering fake soft shadows with smoothies
EGRW '03 Proceedings of the 14th Eurographics workshop on Rendering
Triple product wavelet integrals for all-frequency relighting
ACM SIGGRAPH 2004 Papers
Volumetric reconstruction and interactive rendering of trees from photographs
ACM SIGGRAPH 2004 Papers
PG '04 Proceedings of the Computer Graphics and Applications, 12th Pacific Conference
Modeling and visualization of leaf venation patterns
ACM SIGGRAPH 2005 Papers
ACM SIGGRAPH 2006 Papers
Hierarchical retargetting of 2D motion fields to the animation of 3D plant models
Proceedings of the 2006 ACM SIGGRAPH/Eurographics symposium on Computer animation
A framework for precomputed and captured light transport
ACM Transactions on Graphics (TOG)
Knowledge and heuristic-based modeling of laser-scanned trees
ACM Transactions on Graphics (TOG)
Advanced material appearance modeling
ACM SIGGRAPH 2008 classes
Digital Modeling of Material Appearance
Digital Modeling of Material Appearance
Precomputation-Based Rendering
Foundations and Trends® in Computer Graphics and Vision
Advanced material appearance modeling
ACM SIGGRAPH 2009 Courses
ISVC '09 Proceedings of the 5th International Symposium on Advances in Visual Computing: Part I
Separating pigment components of leaf color image using FastICA
ICIC'10 Proceedings of the 6th international conference on Advanced intelligent computing theories and applications: intelligent computing
Expressive illumination of foliage based on implicit surfaces
NPH'07 Proceedings of the Third Eurographics conference on Natural Phenomena
Rendering trees with indirect lighting in real time
EGSR'08 Proceedings of the Nineteenth Eurographics conference on Rendering
Efficient rendering of human skin
EGSR'07 Proceedings of the 18th Eurographics conference on Rendering Techniques
Physically based real-time translucency for leaves
EGSR'07 Proceedings of the 18th Eurographics conference on Rendering Techniques
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This paper presents a framework for the real-time rendering of plant leaves with global illumination effects. Realistic rendering of leaves requires a sophisticated appearance model and accurate lighting computation. For leaf appearance we introduce a parametric model that describes leaves in terms of spatially-variant BRDFs and BTDFs. These BRDFs and BTDFs, incorporating analysis of subsurface scattering inside leaf tissues and rough surface scattering on leaf surfaces, can be measured from real leaves. More importantly, this description is compact and can be loaded into graphics hardware for fast run-time shading calculations, which are essential for achieving high frame rates. For lighting computation, we present an algorithm that extends the Precomputed Radiance Transfer (PRT) approach to all-frequency lighting for leaves. In particular, we handle the combined illumination effects due to low-frequency environment light and high-frequency sunlight. This is done by decomposing the local incident radiance of sunlight into direct and indirect components. The direct component, which contains most of the high frequencies, is not pre-computed with spherical harmonics as in PRT; instead it is evaluated on-the-fly using pre-computed light-visibility convolution data. We demonstrate our framework by the rendering of a variety of leaves and assemblies thereof.