Concept

Light pollution

Related publications (329)

The Adaptation of Daylight Glare Probability to Dynamic Metrics in a Computational Setting

Because nearly all existing glare equations depend on source size, relative position, and luminance, predicting glare in daylighting software generally requires the pixel-processing of a rendered image meant to reproduce a human’s view. When considering mu ...

2009

Green Lighting - Energy-Efficient Integrated Lighting Systems

Jean-Louis Scartezzini, Friedrich Linhart

The objective of the Green Lighting project was to develop a High Performance Integrated Lighting System, based on advanced technologies for day- and electric lighting, achieving a Lighting Power Density (LPD) that does not exceed 3 W/m2. The project has r ...

2009

Illuminant estimation and detection using near infrared

Sabine Süsstrunk

Digital camera sensors are sensitive to wavelengths ranging from the ultraviolet (200-400nm) to the near-infrared (700-100nm) bands. This range is, however, reduced because the aim of photographic cameras is to capture and reproduce the visible spectrum (4 ...

2009

Gallium arsenide p-i-n radial structures for photovoltaic applications

Michael Graetzel, Martin Heiss, Carlo Colombo

Gallium arsenide p-i-n radial junctions were fabricated by molecular beam epitaxy. The current-voltage characteristics of single nanowires were measured in the dark and under various illumination conditions including 1.5 AM. The total efficiency was 4.5%. ...

2009

Gallium arsenide p-i-n radial structures for photovoltaic applications

Michael Graetzel, Anna Fontcuberta i Morral, Martin Heiss, Carlo Colombo

American Institute of Physics2009

Specularities as an information source in the presence of texture

Pascal Lagger

The appearance of real world objects is the result of the combination of their own texture and the light rays striking them before reaching our eyes, or our camera. This appearance therefore brings very rich information about the objects shapes, materials, ...

EPFL2009

Material Classification Using Color and NIR Images

Sabine Süsstrunk, Neda Salamati

Material classification is becoming more important in computer vision and digital photography applications, which require accurate classification of objects present in the imaged scene. This is a very challenging task because the sheer diversity of scene c ...

2009

A first application of the Lightsolve approach: Pre-design of the new Belgian VELUX headquarters

Marilyne Andersen, Magali Bodart

This study presents the application of the “Lightsolve” method on the pre-design of a new sustainable building in order to optimize its daylighting. At the time of the project, this method combined climate-based illuminance and glare evaluations with visua ...

2009

Light extraction from GaN-based light emitting diode structures with a noninvasive two-dimensional photonic crystal

Elison de Nazareth Matioli

A noninvasive fabrication process involving soft nanoimprint lithography is used to pattern a photonic crystal (PhC) in titania film for enhanced light extraction from a GaN light emitting diode (LED). This technique avoids damaging the LED structure by th ...

American Institute of Physics2009

Circadian Effects of Daylighting in a Residential Environment

Marilyne Andersen, Sharon Jane Gochenour

This paper examines the effects of housing design upon the amount of natural light available for cuing of the human circadian system. It further assesses whether the conditions present in historic Boston row houses, when considered in the context of human ...

2009

Graph Chatbot

Chat with Graph Search

Ask any question about EPFL courses, lectures, exercises, research, news, etc. or try the example questions below.

DISCLAIMER: The Graph Chatbot is not programmed to provide explicit or categorical answers to your questions. Rather, it transforms your questions into API requests that are distributed across the various IT services officially administered by EPFL. Its purpose is solely to collect and recommend relevant references to content that you can explore to help you answer your questions.