Environment mapping and other applications of world projections
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Measuring and modeling anisotropic reflection
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Non-linear approximation of reflectance functions
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
Recovering high dynamic range radiance maps from photographs
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
Proceedings of the 25th annual conference on Computer graphics and interactive techniques
Reflectance and texture of real-world surfaces
ACM Transactions on Graphics (TOG)
The hemi-cube: a radiosity solution for complex environments
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A microfacet-based BRDF generator
Proceedings of the 27th annual conference on Computer graphics and interactive techniques
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Proceedings of the 29th annual conference on Computer graphics and interactive techniques
Frequency space environment map rendering
Proceedings of the 29th annual conference on Computer graphics and interactive techniques
Proceedings of the 29th annual conference on Computer graphics and interactive techniques
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Proceedings of the 29th annual conference on Computer graphics and interactive techniques
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Interactive rendering with arbitrary BRDFs using separable approximations
EGWR'99 Proceedings of the 10th Eurographics conference on Rendering
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GI '04 Proceedings of the 2004 Graphics Interface Conference
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Level-of-detail representation of bidirectional texture functions for real-time rendering
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IEEE Transactions on Pattern Analysis and Machine Intelligence
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Programming and Computing Software
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MIG'10 Proceedings of the Third international conference on Motion in games
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ACM Transactions on Graphics (TOG)
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BTF modelling using BRDF texels
IWICPAS'06 Proceedings of the 2006 Advances in Machine Vision, Image Processing, and Pattern Analysis international conference on Intelligent Computing in Pattern Analysis/Synthesis
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ACM Transactions on Graphics (TOG)
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Computer Animation and Virtual Worlds
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Pattern Recognition Letters
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Efficient and realistic rendering of cloth is of great interest especially in the context of e-commerce. Aside from the simulation of cloth draping, the rendering has to provide the "look and feel" of the fabric itself. In this paper we present a novel interactive rendering algorithm to preserve this "look and feel" of different fabrics. This is done by using the bidirectional texture function (BTF) of the fabric, which is acquired from a rectangular probe and after synthesis, mapped onto the simulated geometry. Instead of fitting a special type of bidirectional reflection distribution function (BRDF) model to each texel of our BTF, we generate view-dependent texture-maps using a principal component analysis of the original data. These view-dependent texture maps are then illuminated and rendered using either point-light sources or high dynamic range environment maps by exploiting current graphics hardware. In both cases, self-shadowing caused by geometry is taken into account. For point light sources, we also present a novel method to generate smooth shadow boundaries on the geometry. Depending on the geometrical complexity and the sampling density of the environment map, the illumination can be changed interactively. To ensure interactive frame rates for denser samplings or more complex objects, we introduce a principal component based decomposition of the illumination of the geometry. The high quality of the results is demonstrated by several examples. The algorithm is also suitable for materials other than cloth, as far as these materials have a similar reflectance behavior.