Concept
Bidirectional reflectance distribution function
Related publications (74)
Practical Product Path Guiding Using Linearly Transformed Cosines
Path tracing is now the standard method used to generate realistic imagery in many domains, e.g., film, special effects, architecture etc. Path guiding has recently emerged as a powerful strategy to counter the notoriously long computation times required t ...
WILEY2020Image-Based Acquisition and Modeling of Polarimetric Reflectance
Wenzel Alban Jakob, Tizian Lucien Zeltner, Xin Tong
Realistic modeling of the bidirectional reflectance distribution function (BRDF) of scene objects is a vital prerequisite for any type of physically based rendering. In the last decades, the availability of databases containing real-world material measurem ...
ASSOC COMPUTING MACHINERY2020Unified Neural Encoding of BTFs
Realistic rendering using discrete reflectance measurements is challenging, because arbitrary directions on the light and view hemispheres are queried at render time, incurring large memory requirements and the need for interpolation. This explains the des ...
WILEY2020Slope-Space Integrals for Specular Next Event Estimation
Wenzel Alban Jakob, Tizian Lucien Zeltner, Guillaume Rémi Bruno Loubet
Monte Carlo light transport simulations often lack robustness in scenes containing specular or near-specular materials. Widely used uni- and bidirectional sampling strategies tend to find light paths involving such materials with insufficient probability, ...
ASSOC COMPUTING MACHINERY2020Specular Manifold Sampling for Rendering High-Frequency Caustics and Glints
Wenzel Alban Jakob, Tizian Lucien Zeltner
Scattering from specular surfaces produces complex optical effects that are frequently encountered in realistic scenes: intricate caustics due to focused reflection, multiple refraction, and high-frequency glints from specular microstructure. Yet, despite ...
ASSOC COMPUTING MACHINERY2020Neural BTF Compression and Interpolation
The Bidirectional Texture Function (BTF) is a data-driven solution to render materials with complex appearance. A typical capture contains tens of thousands of images of a material sample under varying viewing and lighting conditions. While capable of fait ...
WILEY2019Automated Daylighting Control System based on Sky Luminance Monitoring and Lighting Computing
Sufficient daylight exposure contributes to occupants' productivity and health in buildings. However, excessive daylight ingress induces discomfort glare and increases the cooling load in warm seasons. The performance of manual shading systems is limited b ...
EPFL2019Wide Gamut Spectral Upsampling with Fluorescence
Physically based spectral rendering has become increasingly important in recent years. However, asset textures in such systems are usually still drawn or acquired as RGB tristimulus values. While a number of RGB to spectrum upsampling techniques are availa ...
2019Local radiation maxima in snow-covered mountains and its influence on PV winter production
Michael Lehning, Jérôme François Sylvain Dujardin, Annelen Kahl, Felix Andreas Von Rütte
Mountains receive increased solar radiation because of a thinner atmosphere, the presence of snow on the ground and – in many regions such as the Alps – decreased winter cloudiness. In complex terrain, multiple terrain scattering further leads to radiation ...
2019An Adaptive Parameterization for Efficient Material Acquisition and Rendering
One of the key ingredients of any physically based rendering system is a detailed specification characterizing the interaction of light and matter of all materials present in a scene, typically via the Bidirectional Reflectance Distribution Function (BRDF) ...
ASSOC COMPUTING MACHINERY2018