Results 31 to 40 of about 359,274 (310)
Research on Calibration Algorithm of Camera and LiDAR for Transport Vehicles in Open-pit Mines
Kongzhi Yu Xinxi Jishu, 2022 In the intelligent driving system of transport vehicles in open-pit mines, the data fusion of camera and LiDAR plays a vital role in the detection, recognition and tracking of obstacles. Aiming at the problem of camera and LiDAR spatial coordinate unity,
XU Yanghan +5 more
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IET Intelligent Transport Systems, 2022 The authors present a fully automatic method for camera calibration in expressway scenes and vehicle localisation on curved roads. Our approach does not depend on specific targets or a priori information and adapts to a wide range of variations in road ...
Wentao Zhang +5 more
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Camera Calibration from Symmetry [PDF]
, 2000 This paper addresses the problem of calibrating a pinhole camera from images of a surface of revolution. Camera calibration is the process of determining the intrinsic or internal parameters (i.e. aspect ratio, focal length and principal point) of a camera, and is important for both motion estimation and metric reconstruction of 3D models.
Cipolla, R, Wong, KKY, Mendonca, PRS
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Streak camera recording of shock wave transit times at large distances using laser illumination [PDF]
, 1984 A pulsed laser illumination system for streak camera recording of impact-induced shock wave transit times (~1 µs) during impact experiments is described.
Ahrens, T. J. +3 more
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Underwater Camera Calibration [PDF]
, 2021 A common laboratory setup for underwater imaging places a camera in the air to capture the image of an object placed in a water-filled tank and observed through a flat glass interface. In such a setup light is refracted twice, at air-glass and glasswater interfaces, and this refraction of light is physical phenomenon which makes the underwater camera ...
Petković, Tomislav +2 more
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DIGITAL CAMERA CALIBRATION USING IMAGES TAKEN FROM AN UNMANNED AERIAL VEHICLE [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012 For calibrating the camera, an accurate determination of the interior orientation parameters is needed. For more accurate results, the calibration images should be taken under conditions that are similar to the field samples.
M. Pérez, F. Agüera, F. Carvajal
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Catadioptric camera calibration [PDF]
Proceedings of the Seventh IEEE International Conference on Computer Vision, 1999 Catadioptric systems are realizations of omnidirectional vision through mirror-lens combinations. Designs preserving the uniqueness of an effective viewpoint have recently gained attraction. We present here a novel approach for estimating the intrinsic parameters of a well-known catadioptric system consisting of a paraboloid mirror and an orthographic ...
C. Geyer, K. Daniilidis
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Photogrammetry requirements for digital camera calibration applying Tcc and MatLab software
Geodesy and Cartography, 2012 The result of photogrammetry is a digital object or terrain images on the plane or in three-dimensional space. Precise data on the object is photocopied by a professional digital camera equipped with the calibrated system of optical lens (evaluation of ...
Jūratė Sužiedelytė-Visockienė
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Projector Calibration by “Inverse Camera Calibration” [PDF]
, 2011 The accuracy of 3-D reconstructions depends substantially on the accuracy of active vision system calibration. In this work, the problem of video projector calibration is solved by inverting the standard camera calibration work flow. The calibration procedure requires a single camera, which does not need to be calibrated and which is used as the sensor
Martynov Ivan +2 more
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A flux calibration method for remote sensing satellites using stars
, 2017 Star surveys and model analyses show that many stars have absolute stable fluxes as good as 3% in 0.3-35{\mu}m wavebands and about 1% in the visible wavebands. The relative flux calibrations between stars are better than 0.2%.
Xu, Chun
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