Le cinéma omnistéréo ou l’art d’avoir des yeux tout le tour de la tête (thesis)

Vincent Chapdelaine-Couture. Omnistereo cinema: capture, projection and perception, thesis accepted on the 24th of April, 2012. Continue reading

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Unstructured Light Scanning to Overcome Interreflections

V. Couture, N. Martin, S. Roy. Unstructured Light Scanning to Overcome Interreflections, International Conference on Computer Vision (ICCV), 2011. Continue reading

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Panoramic Stereo Video Textures

omnistereo

V. Couture, M.S. Langer, S. Roy. Panoramic Stereo Video Textures, International Conference on Computer Vision (ICCV), 2011. Continue reading

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Experimentation with mobile camera-projector system

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Easy multi-projector desktop

Screenshot-CompizConfig Settings Manager-1

Introducing a new an easy way to create a single high-resolution Linux desktop using multiple projectors.  Anyone can achieve this with the following easy-to-use tools:

lt-align: the LightTwist projector alignment tool is a simple point-and-click interface that lets the user specify a single projection area with multiple overlapping projectors and generate distortion and blending maps.

lt-compiz-plugin: A plugin for Compiz 0.9x that warps and blends the output of your projectors using the deformation maps produced by lt-align, creating one single seamless high resolution desktop area.

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Connexion VPN Juniper à l’Université de Montréal (Linux Ubuntu)

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Libre Graphics Meeting (LGM 2011)

The next Libre Graphics Meeting 2011 will be held on may 10-13.

We will present a démo of a new compiz plugin “Lighttwist” which will significantly raise the screen resolution of the Linux desktop by using multiple projectors. The image alignment is very simple and accurate, and edge-blending is automatic. The code will be GPL and made available on the day of the presentation at LGM.

 

 

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Connexion à Eduroam

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Analysis of Disparity Distortions in Omnistereoscopic Displays

cyclodisparity

V. Couture, M.S. Langer, S. Roy. Analysis of Disparity Distortions in Omnistereoscopic Displays, ACM Transactions on Applied Perception, vol. 7 (4), 2010. Continue reading

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Capturing Non-Periodic Omnistereo Motion

omnicalib

Abstract

An omnistereo pair of images enables depth perception all around the observer. Because omnistereo lenses or mirrors do not yet exist, capturing an omnistereo video would require using several stereo cameras at different baseline orientations. This paper presents a multi-take capture method for creating high-resolution omnistereo videos at an affordable cost: only two standard cameras and a tripod are required. The method combines multiple stereo takes, where each take follows some action within the field of view, an actor for instance. Internal camera parameters are first calibrated by capturing a static omnistereo background. Each frame of each take is then pasted on the background at a position estimated by feature tracking. The paper provides a detailed description of the steps of the method. It also provides an analysis of parallax which results from the off-axis camera rotation. Parameters for the method are chosen to minimize artifacts that arise from this parallax. The method is intended to be applied in a relatively controlled space like a movie set, where the action in each take is within the field of view of the cameras.

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Posted in Michael Langer, Omnistéréo, OMNIVIS, Sébastien Roy, Vincent Couture | Tagged , , | Leave a comment