[Radiance-general] Radiance 2006 Workshop - 26 May Update

[John Mardaljevic]

Fellow Radiance renderers, scientists, practitioners and enthusiasts  
(is that everybody?)

Here are some details and titles of presentations that will be given  
at the Radiance 2006 Scientific Workshop
13-14 (Wed-Thu) September, Queens Building, De Montfort University,  
Leicester, UK
http://www.iesd.dmu.ac.uk/~jm/radiance2006work.html

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Rtcontrib Tutorial
Greg Ward, Anyhere Software

The rtcontrib program introduced in Radiance 3.7 offers a general  
facility for tracking ray contributions and partial sums, by calling  
one or more rtrace processes with the -oTW or -oTV option.  The  
intended application for rtcontrib is daylight coefficient  
calculations, but it may also be applied to BRDF simulation and  
optical systems analysis.  After going over the basic idea behind  
rtcontrib design and operation, we will give a few related examples  
of daylight coefficient usage.  We will then demonstrate how one can  
compute the light distribution from a badly designed light pipe over  
the course of a year using a pair of coupled rtcontrib runs, using  
rcalc and pcomb to render an image for each time-step.  By reversing  
the usual ray flow direction, starting from the sky and working  
towards the skylight opening, we can relate the output distribution  
of the skylight to the sun and sky coefficients, effectively doing  
many photon map calculations at once.  This is just to get the  
audience thinking about the possibilities.  Plenty of time will be  
allowed for questions, suggestions, and discussion of user  
experiences and problems with the new program.

Daylight coefficients: theory and implementation
John Mardaljevic, IESD
This presentation serves as an introduction to Greg's rtcontrib  
tutorial.

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Night Lighting Simulation: Design Evaluation Using Radiance's  
Rtcontrib and Mksource Programs
Jack de Valpine,  Visarc Incorporated

This talk presents a lighting simulation study for the exterior  
lighting of a 60 story office tower set in an urban context. The  
purpose of the study was to assist the design team in evaluating and  
presenting the proposed lighting design to the owner. Due to the  
complexity of the design and variable design options, Radiance's  
rtcontrib was used to provide the greatest flexibility and control  
over simulation results. In order to better approximate lighting from  
the local surrounding urban environment and sky condition, HDRI  
photography was employed to capture the local environment and then  
used to produce an image based lighting environment with Radiance's  
mksource. In addition to examples from the project, overall workflow  
and resource requirements will be discussed in contrast to more  
typical workflow for Radiance simulations.

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The following are titles only -- details to follow:

"WebHDR", Axel Jacobs, London Met.

“Calculation of circadian illuminance distribution with Radiance",  
Krzysztof Wandachowicz, Poznan University of Technology

"MOAR: The Mother of All Renderers or Radiance in Real-Time", Alan  
Chalmers and Kurt Debattista, Bristol University

"Comparing Real and Virtual Scenes", Timo Kunkel, Bristol University

"Radiance on Mobile Devices", Matt Aranha, Bristol University

"Accelerating Radiance using Novel Hardware", David Coulthurst,  
Bristol University

"New Photosphere features, e.g.  panoramic HDR stitcher", Greg Ward,  
Anyhere Software

"Novel Applications of HDR Imaging", John Mardaljevic, IESD

More have been promised -- please send as soon as you can.

Pricing will be finalised soon.  We will endeavour to keep costs as  
low as possible.  They will be in the *region* of:

£180 Attending only
£150 Presenting
£120 Registered students
£low A special discretionary rate depending on individual  
circumstances, e.g. un-waged (by arrangement)

Regards,

-John Mardaljevic

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Dr. John Mardaljevic
Senior Research Fellow
Institute of Energy and Sustainable Development
De Montfort University
The Gateway
Leicester
LE1 9BH, UK
+44 (0) 116 257 7972
+44 (0) 116 257 7981 (fax)

jm at dmu.ac.uk
http://www.iesd.dmu.ac.uk/~jm