Concept

Path tracing

Publications associées (130)

On-site performance of electrochromic glazings coupled to an anidolic daylighting system

Jean-Louis Scartezzini, Jessen Page, Nicolas Morel

This work takes benefit from two advanced building technologies through the integration of an anidolic daylighting system and an electro-chromic glazing in a building facade for achieving an optimal control of the daylight flux entering in an office room. ...

2007

Segmentation fémorale par modèle déformable et programmation dynamique

Gaëtan Marti

This Ph.D thesis presents new paradigms in the field of segmentation by mean of deformable models. Classic model-based segmentation approach consists of iteratively deform complex models in the space of the scanner slices until the organ to segment is fitt ...

EPFL2007

Internal illumination prediction based on a simplified radiosity algorithm

Darren Robinson

This paper describes a new model for predicting natural interior illumination in the urban context. A simplified radiosity algorithm is used to define the external luminous environment and this model structure is used to predict internal illumination from ...

2006

Validation of the performance of a new bidirectional video-goniophotometer

Marilyne Andersen

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

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

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

Multiple Light Sources Recovery in the Presence of Specularities and Texture

Pascal Fua, Pascal Lagger

Recovering the light sources from images in which the objects can move is difficult both because the specularities travel along the surfaces and because diffuse reflections do not remain constant. In this paper, we show that this can nevertheless be done w ...

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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