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Rapid Acquisition of Specular and Diffuse Normal Maps from Polarized Spherical Gradient Illumination
(The Eurographics Association, 2007)
We estimate surface normal maps of an object from either its diffuse or specular reflectance using four spherical gradient illumination patterns. In contrast to traditional photometric stereo, the spherical patterns allow ...
Convolution Shadow Maps
(The Eurographics Association, 2007)
We present Convolution Shadow Maps, a novel shadow representation that affords efficient arbitrary linear filtering of shadows. Traditional shadow mapping is inherently non-linear w.r.t. the stored depth values, due to the ...
Interactive Illumination with Coherent Shadow Maps
(The Eurographics Association, 2007)
We present a new method for interactive illumination computations based on precomputed visibility using coherent shadow maps (CSMs). It is well-known that visibility queries dominate the cost of physically based rendering. ...
A Real-time Beam Tracer with Application to Exact Soft Shadows
(The Eurographics Association, 2007)
Efficiently calculating accurate soft shadows cast by area light sources remains a difficult problem. Ray tracing based approaches are subject to noise or banding, and most other accurate methods either scale poorly with ...
Whitted Ray-Tracing for Dynamic Scenes using a Ray-Space Hierarchy on the GPU
(The Eurographics Association, 2007)
In this paper, we present a new algorithm for interactive rendering of animated scenes with Whitted Ray-Tracing, running on the GPU. We focus our attention on the secondary rays (the rays generated by one or more bounces ...
The Random Camera, the Coded Aperture Camera, and Other Cameras
(The Eurographics Association, 2007)
I ll describe two cameras and a comparison of many cameras. In the random camera, we use a lens which creates a pseudo-random relationship between incoming light rays and resulting sensor locations. We studied various ...
Dynamic Point Distribution for Stroke-based Rendering
(The Eurographics Association, 2007)
We present a new point distribution algorithm that is well adapted to stroke-based rendering systems. Its main characteristic is to deal efficiently with three conflicting constraints: the distribution of points should ...
Efficient Basis Decomposition for Scattered Reflectance Data
(The Eurographics Association, 2007)
Recent progress in acquisition technology has increased the availability and quality of measured appearance data. Although representations based on dimensionality reduction provide the greatest fidelity to measured data, ...
Dirty Glass: Rendering Contamination on Transparent Surfaces
(The Eurographics Association, 2007)
Rendering of clean transparent objects has been well studied in computer graphics. However, real-world transparent objects are seldom clean their surfaces have a variety of contaminants such as dust, dirt, and lipids. These ...
Microfacet Models for Refraction through Rough Surfaces
(The Eurographics Association, 2007)
Microfacet models have proven very successful for modeling light reflection from rough surfaces. In this paper we review microfacet theory and demonstrate how it can be extended to simulate transmission through rough ...