Results 211 to 220 of about 46,576 (257)

3D Vision-Guided Adaptive 3D Ultrasonic Scanning for Robotic Arms: Nondestructive Testing of Aerospace Components. [PDF]

Sensors (Basel)
Wei X, Kang Z, Yin Y, Zhang J, Li C, Cai Y, He W.   +6 more
europepmc   +1 more source

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PALSAR Radiometric and Geometric Calibration

IEEE Transactions on Geoscience and Remote Sensing, 2009
This paper summarizes the results obtained from geometric and radiometric calibrations of the Phased-Array L-Band Synthetic Aperture Radar (PALSAR) on the Advanced Land Observing Satellite, which has been in space for three years. All of the imaging modes of the PALSAR, i.e., single, dual, and full polarimetric strip modes and scanning synthetic ...
Masanobu Shimada, Takeo Tadono, Osamu Isoguchi   +2 more
exaly   +2 more sources

Geometrical calibration of multispectral calibration

2015 12th International Conference on Ubiquitous Robots and Ambient Intelligence (URAI), 2015
In this paper, we introduce a novel calibration pattern board for visible and thermal camera calibration. Our pattern board is easy to make, handy to move and efficient to heat. Also, it preserves a uniform thermal radiance for a long time. Proposed method can be employed in single- and multi- spectral camera system, and also used in the splitter or ...
Namil Kim, Yukyung Choi, Soonmin Hwang, Kibaek Park, Jae Shin Yoon, In So Kweon   +5 more
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PROBA-V geometric calibration

2012 IEEE International Geoscience and Remote Sensing Symposium, 2012
A system is described for the geometrical calibration of the planned PROBA-V multi spectral earth observation satellite. The largest challenge lies in the complex thermo-elastic distortion due to the absence of active thermal control onboard. The system is based on a 2 step (first by scene, then by global trend), weighted and constrained least squares ...
Stefano Mica, Luca Galli, Geert Duhoux, Stefan Livens, Veljko M. Jovanovic, Alessandra Giustiniani, Jan C. Dries, Joe Zender, Stefano Santandrea   +8 more
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Geometric video projector auto-calibration

2009 IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops, 2009
In 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 the camera to be calibrated nor the presence of a calibration grid or other metric information about the scene.
Draréni, Jamil, Roy, Sébastien, Sturm, Peter   +2 more
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Calibration of geometric and non-geometric errors of an industrial robot

Robotica, 2001
Inaccurate positioning of the robot end effector causes joint deformation as well as geometric errors when an industrial robot has a payload at its end effector. We propose a new approach of calibration which deals with joint angle dependent errors to compensate for these phenomena.
Jang, JH, Kim, SH Kim, Soohyun, Kwak, YK Kwak, Yoon Keun   +2 more
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Geometric calibration of a hyperspectral imaging system

Applied Optics, 2010
Every imaging system requires a geometric calibration to yield accurate optical measurements. Geometric calibration typically involves imaging of a known calibration object and finding the parameters of a camera model and a model of optical aberrations.
Ziga, Spiclin, Jaka, Katrasnik, Miran, Bürmen, Franjo, Pernus, Bostjan, Likar   +4 more
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The question of accuracy with geometric camera calibration

2009 Canadian Conference on Electrical and Computer Engineering, 2009
In the field of machine vision, camera calibration refers to the experimental determination of a set of parameters which describe the image formation process for a given analytical model of the machine vision system. An accurate, reliable calibration procedure is essential for most industrial machine vision applications including mechanical metrology ...
Puthukkudichalil Swapna, Nicholas Krouglicof, Ray G. Gosine   +2 more
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A novel geometric approach for camera calibration

2014 IEEE International Conference on Image Processing (ICIP), 2014
In this paper, we propose a novel geometric approach for solving camera calibration efficiently. Our camera calibration procedure is implemented on planar objects with rectangles on them. Images of the planar object are taken from different views where corner features are extracted.
Zhe Zhang, Kin Hong Wong
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Deltille Grids for Geometric Camera Calibration

2017 IEEE International Conference on Computer Vision (ICCV), 2017
The recent proliferation of high resolution cameras presents an opportunity to achieve unprecedented levels of precision in visual 3D reconstruction. Yet the camera calibration pipeline, developed decades ago using checkerboards, has remained the de facto standard.
Hyowon Ha, Michal Perdoch, Hatem Alismail, In So Kweon, Yaser Sheikh   +4 more
openaire   +1 more source