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Tag Archives: calibration
Capturing Non-Periodic Omnistereo Motion
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 … Continue reading
Posted in Michael Langer, Omnistéréo, OMNIVIS, Sébastien Roy, Vincent Couture
Tagged calibration, omnidirectionnel, omnistéréo
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Geometric Video Projector Auto-Calibration
Abstract I this paper we address the problem of geometric calibration of video projectors. Like in most previous methods we also use a camera that observes the projection on a planar surface. Contrary to those previous methods, we neither require … Continue reading
Posted in Jamil Draréni, Peter Sturm, PROCAM, Sébastien Roy
Tagged auto-calibration, calibration, homographie, projecteur-caméra
3 Comments
Virtual 3D drawing tool for stage performances
This paper presents a new system for tridimensional virtual drawing relying on an infrared pen observed by a number of surrounding cameras. Nintendo wiimotes are used as cameras to provide reliable real-time tracking information. Continue reading
Posted in Lucie Bélanger, Sébastien Roy, VRIC, Wiimmersion
Tagged calibration, géométrie épipolaire, tracking, wiimote
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Projector Calibration Using a Markerless plane
Abstract In this paper we address the problem of geometric video projector calibration using a markerless planar surface (wall) and a partially calibrated camera. Instead of using control points to infer the camera-wall orientation, we find such relation by efficiently … Continue reading
Posted in Jamil Draréni, Peter Sturm, VISAPP
Tagged calibration, homographie, projecteur-caméra
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Calibration of Cameras with Radially Symmetric Distortion
Abstract We present algorithms for plane-based calibration of general radially distorted cameras. By this we understand cameras that have a distortion center and an optical axis such that the projection rays of pixels lying on a circle centered on the … Continue reading
Posted in Jean-Philippe Tardif, Martin Trudeau, PAMI, Peter Sturm, Sébastien Roy
Tagged calibration, catadioptric, fisheye, omnidirectionnel
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(English) Plane-based Self-calibration of Radial Distortion
Abstract We present an algorithm for plane-based self-calibration of cameras with radially symmetric distortions given a set of sparse feature matches in at least two views. The projection function of such cameras can be seen as a projection with a … Continue reading
Posted in ICCV, Jean-Philippe Tardif, Peter Sturm, Sébastien Roy
Tagged calibration, fisheye
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(English) Projector-Based Augmented Reality in Surgery without Calibration
Abstract Augmented reality (AR) is becoming an important tool in surgery to support the surgeon and improve operation quality, safety and duration. However the AR setup with head-mounted display (HMD) and other equipments is often considered cumbersome by surgeons and … Continue reading
Posted in EMBC, Jean Meunier, Jean-Philippe Tardif, Sébastien Roy
Tagged calibration, médical, projecteur-caméra, réalité augmentée
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Construction d’une mosaïque à partir d’une séquence vidéo
Abstract In this thesis, we study the stages of the construction of an image mosaic, an important problem in the field of computer vision. First, we evaluate the existing methods, which deal with all the stages of construction of a … Continue reading
(English) Cylindrical Rectification to Minimize Epipolar Distortion
Abstract We propose a new rectification method for aligning epipolar lines of a pair of stereo images taken under any camera geometry. It effectively remaps both images onto the surface of a cylinder instead of a plane, which is used … Continue reading
Posted in CVPR, Ingemar Cox, Jean Meunier, Sébastien Roy
Tagged calibration, rectification, stéréo
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