Results 211 to 220 of about 43,204 (241)
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Geometrical calibration of multispectral calibration
2015 12th International Conference on Ubiquitous Robots and Ambient Intelligence (URAI), 2015In 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 +5 more
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Geometric video projector auto-calibration
2009 IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops, 2009In 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 +2 more
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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 +8 more
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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 +8 more
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Catadioptric camera calibration using geometric invariants
Proceedings Ninth IEEE International Conference on Computer Vision, 2003Central catadioptric cameras are imaging devices that use mirrors to enhance the field of view while preserving a single effective viewpoint. In this paper, we propose a novel method for the calibration of central catadioptric cameras using geometric invariants.
Xianghua, Ying, Zhanyi, Hu
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Geometric calibration of thermal cameras
SPIE Proceedings, 2013There exist several tools and methods for camera resectioning, i.e. geometric calibration for the purpose of estimating intrinsic and extrinsic parameters. The intrinsic parameters represent the internal properties of the camera such as focal length, principal point and distortion coefficients.
Philip Engström +2 more
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PALSAR Radiometric and Geometric Calibration
IEEE Transactions on Geoscience and Remote Sensing, 2009This 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 ...
M. Shimada +3 more
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Landsat Collection-2 geometric calibration updates
Earth Observing Systems XXV, 2020The U.S. Geological Survey (USGS) changed the management and delivery of Landsat products to the public in its archive through the implementation of Collections. The Collections process ensures consistent data quality through time and across all the Landsat sensors with a few modifications to the metadata.
Rajagopalan Rengarajan +4 more
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Copernicus SENTINEL-2 Geometric Calibration Status
2021 IEEE International Geoscience and Remote Sensing Symposium IGARSS, 2021The Sentinel-2 mission is a key element of the Copernicus Earth monitoring program of the European Union. The mission is currently composed of two satellites and provides a continuous observation of land and coastal areas at high spatial resolution and with a revisit time of 5 days at the equator.
Sebastien Clerc +8 more
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