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A new device for dynamic luminance mapping and glare risk assessment in buildings

Publications associées (126)

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Illuminant retrieval for fixed location cameras

Sabine Süsstrunk, Joanna Marguier

Fixed location cameras, such as panoramic cameras or surveillance cameras, are very common. In images taken with these cameras, there will be changes in lighting and dynamic image content, but there will also be constant objects in the background. We propo ...

2008

Digital Camera Workflow for High Dynamic Range Images Using a Model of Retinal Processing

Sabine Süsstrunk, Laurence Meylan, Daniel Tamburrino

We propose a complete digital camera workflow to capture and render high dynamic range (HDR) static scenes, from RAW sensor data to an output- referred encoded image. In traditional digital camera processing, demosaicing is one of the first operations done ...

2008

Bayesian estimation of visual discomfort

Nicolas Morel

A method is proposed to estimate objectively occupants' visual discomfort in small office rooms as a function of the illuminance at one or more locations. Expressed as a visual discomfort probability, it is based on an analysis of the past history of the u ...

2008

Minimizing connected lighting power in office rooms equipped with anidolic daylighting systems

Jean-Louis Scartezzini, Friedrich Linhart

Electric lighting is responsible for up to one third of an office building’s electricity needs. Making daylight more available in office buildings can not only contribute to significant energy savings but also enhance the occupants’ performance and wellbei ...

EPFL2007

Bayesian optimization of visual comfort

David Lindelöf

We propose a self-commissioning, user-adaptive blinds and electric lighting controller for small office rooms. Self-commissioning, in this context, means that the controller builds an internal representation of the room, in particular of the room's dayligh ...

EPFL2007

Efficient lighting strategies for office rooms in tropical climates

Jean-Louis Scartezzini, Friedrich Linhart

The “Green Lighting” research project, initiated at the Solar Energy and Building Physics Laboratory (LESO-PB) of the Swiss Federal Institute of Technology in Lausanne (EPFL), is aiming at an energy efficient integration of advanced daylighting and electri ...

2007

Tone mapping for high dynamic range images

Laurence Meylan

Tone mapping is an essential step for the reproduction of "nice looking" images. It provides the mapping between the luminances of the original scene to the output device's display values. When the dynamic range of the captured scene is smaller or larger t ...

EPFL2006

The Reproduction of Specular Highlights on High Dynamic Range Displays

Sabine Süsstrunk, Laurence Meylan

Recent advances in the design of high dynamic range (HDR) monitors enable the display of images having a large dynamic range, close to that encountered in the real world. As their usage will increase, we will be confronted with the problem of rerendering i ...

2006

High Dynamic Range Image Rendering Using a Retinex-Based Adaptive Filter

Sabine Süsstrunk, Laurence Meylan

We propose a new method to render high dynamic range images that models global and local adaptation of the human visual system. Our method is based on the center-surround Retinex model. The novelties of our method is first to use an adaptive surround, whos ...

Institute of Electrical and Electronics Engineers2006

Augmenting Deformable Objects in Real-Time

Pascal Fua, Vincent Lepetit, Julien Pilet

We present a real-time system that can draw virtual patterns or images on deforming real objects by estimating both the deformations and the shading parameters. We show that this is what is required to render the virtual elements so that they blend convinc ...

2005