Concept

Ray tracing (graphics)

Related publications (156)

Validation of the performance of a new bidirectional video-goniophotometer

An accurate knowledge of the directional optical properties of advanced fenestration materials is necessary for them to be adequately integrated in buildings. These properties are expressed by the Bidirectional Transmission (or Reflection) Distribution Fun ...

SAGE Publications2006

Experimental validation of simulation methods for bi-directional transmission properties at the daylighting performance level

Marilyne Andersen

The objective of this paper is to assess the capability of existing lighting simulation methods to predict the performance of Complex Fenestration Systems (CFS), whose potential in daylight and sunlight control make them an increasingly popular alternative ...

Elsevier2006

Efficient raytracing of deforming point-sampled surfaces

Mark Pauly

We present efficient data structures and caching schemes to accelerate ray-surface intersections for deforming point-sampled surfaces. By exploiting spatial and temporal coherence of the deformation during the animation, we are able to improve rendering pe ...

2005

Experimental and simulation-based approaches to assess bidirectional properties of complex fenestration systems

Marilyne Andersen

A serious effort has been made in developing accurate and efficient bidirectional goniophotometric devices for detailed studies of Complex Fenestration Systems, capable of measuring BTDFs and/or BRDFs in an appropriate way. The existing instruments are alm ...

2005

Holistic Radiation Modelling with a Fast Simplified Radiosity Algorithm

Darren Robinson

The radiant external environment may be described by two hemispheres, above and below the horizontal plane, which are discretised into patches of known solid angle. Occlusions to these patches may be combined and represented as some patch fraction for whic ...

2005

Bi-directional transmission properties of Venetian blinds: experimental assessment compared to ray-tracing calculations

Marilyne Andersen, Jean-Louis Scartezzini

An accurate evaluation of daylight distribution through advanced fenestration systems (complex glazing, solar shading systems) requires the knowledge of their Bidirectional light Transmission (Reflection) Distribution Function BT(R)DF. An innovative equipm ...

2005

Experimental validation of daylighting simulation methods for complex fenestration systems

Marilyne Andersen

The objective of this paper is to assess the capability of existing lighting simulation methods to predict the performance of complex fenestration systems, which are becoming a commonly used component in buildings construction domain. A specific experiment ...

2005

Modelling the effect of particle size, shape and orientation of light transfer through porous media

In this study, we present a radiative-transfer model to simulate reflectance and transmittance of light by soil slabs. The radiative-transfer model implemented, referred to as the beam-tracing model, uses cross-sectional images of scattering media to descr ...

2005

Solurban Project, Solar Utilisation Potential of Urban Sites

Jean-Louis Scartezzini, Darren Robinson, Marylène Montavon, Raphaël Compagnon

Besides providing a more efficient energy use, a large scale application of solar energy technologies in the urban context will be required in the upcoming decades to achieve a drastic reduction of greenhouse gas emissions in the biosphere. Three different ...

2005

Third-harmonic X-mode, real-time controlled top-launch ECW experiments on TCV Tokamak

Yves Martin, Stefano Alberti, Laurie Porte, Alexander Karpushov, Richard Pitts, Gilles Arnoux, Alessandro Bortolon

In the moderate magneticfield of TCV (1.5T), the recently installed X3 system (3 gyrotrons @118 GHz, 0.45 MW/each, 2s) broadens the operational space with the possibility of heating plasmas at high density, well above the cutoff density of the X2 system (X ...

2005

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