Results 11 to 20 of about 1,353 (200)
Autocalibration in the Presence of Critical Motions [PDF]
Procedings of the British Machine Vision Conference 1998, 1998 Autocalibration is a difficult problem. Not only is its computation very noisesensitive, but there also exist many critical motions that prevent the estimation of some of the camera parameters. When a ?stratified? approach is considered, affine and Euclidean calibration are computed in separate steps and it is possible to see that a part of these ...
Demirdjian, David +2 more
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Stereo Autocalibration from One Plane [PDF]
, 2000 This paper describes a method for autocalibrating a stereo rig. A planar object perfforming several general and unknown motions is observes by the stereo rig and, based on point correspondences only, the autocalibration of the stereo rig is computed.
Demirdjian, David +2 more
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Recursive Camera Autocalibration with the Kalman Filter [PDF]
2007 IEEE International Conference on Image Processing, 2007 Given a projective reconstruction of a 3D scene, we address the problem of recovering the Euclidean structure of the scene in a recursive way. This leads to the application of Kalman filtering to the problem of camera autocalibration and to new algorithms for the autocalibration of cameras with varying parameters. This has benefits in saving memory and
Guillermo Gallego 0002 +3 more
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Camera autocalibration using Plucker coordinates [PDF]
IEEE International Conference on Image Processing 2005, 2005 We present new results on the Absolute Line Quadric (ALQ), the geometric object representing the set of lines that intersect the absolute conic. We include new techniques for the obtainment of the Euclidean structure that lead to an efficient algorithm for the autocalibration of cameras with varying parameters.
José Ignacio Ronda +2 more
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Minimal Perspective Autocalibration [PDF]
2024 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)8 pages main paper + 2 pages references + 8 pages supplementary; to be presented at CVPR ...
Andrea Porfiri Dal Cin +3 more
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Camera Autocalibration and the Calibration Pencil [PDF]
Journal of Mathematical Imaging and Vision, 2005 We study the geometric object given by the set of lines incident with the absolute conic. We see that this object is given by a pencil of quadrics of P5, which is characterized. We describe some of its most relevant properties for the camera autocalibration problem.
Antonio Valdés, José Ignacio Ronda
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Autocalibration and the absolute quadric [PDF]
Proceedings of IEEE Computer Society Conference on Computer Vision and Pattern Recognition, 2002 The author describes a new method for camera autocalibration and scaled Euclidean structure and motion, from three or more views taken by a moving camera with fixed but unknown intrinsic parameters. The motion constancy of these is used to rectify an initial projective reconstruction.
Triggs, Bill
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The Absolute Line Quadric and Camera Autocalibration [PDF]
International Journal of Computer Vision, 2006 We introduce a geometrical object providing the same information as the absolute conic: the absolute line quadric (ALQ). After the introduction of the necessary exterior algebra and Grassmannian geometry tools, we analyze the Grassmannian of lines of P3 from both the projective and Euclidean points of view.
Antonio Valdés +2 more
openaire +5 more sources
A BCI System Based on Motor Imagery for Assisting People with Motor Deficiencies in the Limbs [PDF]
Brain Sciences, 2020 Motor deficiencies constitute a significant problem affecting millions of people worldwide. Such people suffer from a debility in daily functioning, which may lead to decreased and incoherence in daily routines and deteriorate their quality of life (QoL).
Omneya Attallah +3 more
doaj +2 more sources