Tag Archives: calibration

Capturing Non-Periodic Omnistereo Motion

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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 , , | Leave a comment

Geometric Video Projector Auto-Calibration

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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 , , , | 3 Comments

Virtual 3D drawing tool for stage performances

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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 , , , | 1 Comment

Projector Calibration Using a Markerless plane

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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 , , | Leave a comment

Calibration of Cameras with Radially Symmetric Distortion

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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 , , , | Leave a comment

(English) Plane-based Self-calibration of Radial Distortion

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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 , | Leave a comment

(English) Algorithms for Batch Matrix Factorization with Application to Structure-from-Motion

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Sorry, this entry is only available in Français.

Posted in Adrien Bartoli, CVPR, Jean-Philippe Tardif, Martin Trudeau, Nicolas Guilbert, Sébastien Roy | Tagged | Leave a comment

(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 , , , | Leave a comment

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

Posted in Ali Abbas, M.Sc. | Tagged , , | Leave a comment

(English) Cylindrical Rectification to Minimize Epipolar Distortion

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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 , , | Leave a comment