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Daylight performance predictions
Published in Jan L.M. Hensen, Roberto Lamberts, Building Performance Simulation for Design and Operation, 2019
For software developers interested in validating their tools against measurements, at least two data sets are currently available: The British Building Research Establishment (BRE) offers a very rich data set of indoor illuminances in a full-scale sidelit test room with a clear glazing and light shelf including sky scanner data (Aizlewood 1993). In 2009, the National Research Council Canada (NRC) in Ottawa, Canada, collected a new data set that consists of measured indoor and outdoor illuminances as well as direct and diffuse outdoor irradiances for five daylighting test cases of varying complexity (Reinhart and Breton 2009). The NRC data set has thus far been used to validate the mental ray raytracer within Autodesk 3ds Max Design 2009 and the Radiance-based Daysim 3.0 program. Given the rising interest in physically accurate daylight simulations, the author expects that other simulation programs will go through comparable experimental validation exercises using the BRE, NRC, or other experimental data sets. These validation studies should make it easier for beginning daylighting modelers to compare the validity and limitations of various simulation programs.
Analysing observer preferences when presenting a product in a rendered scene: 2D vs. autostereoscopic 3D displays
Published in Behaviour & Information Technology, 2019
Francisco Felip, Elena Mulet, Julia Galán, Inmaculada Remolar
Eight geometry-based 3D images (R1-R8) were created to be viewed using two types of displays. The content of the images was modelled with Autodesk 3DS Max 2016 and rendered using Mental Ray. The target camera was situated the height of the eyes of the participants, so that the perspective of the modelled room being viewed on the displays matched the observer's perspective of the real physical setting.