Sensor modeling,self-calibration and accuracy testing of panoramic cameras and laser scanners |
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| Authors: | Jafar Amiri Parian Armin Gruen |
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| Institution: | 1. Department of Surveying Sciences and Geomatics, Universiti Teknologi MARA, Malaysia;2. Department of Geomatic Engineering, University of Calgary, Canada;3. Department of Geomatic Engineering, University of Southern Queensland, Australia;4. Department of Geomatic Engineering, Universiti Teknologi Malaysia, Malaysia;1. The Science and Technology on Automatic Target Recognition Laboratory, National University of Defense Technology, Changsha, Hunan 410074, PR China;2. Samsung Research America - Dallas, Richardson, TX 75082, USA;1. Department of Geography, University of Zurich, Switzerland;2. Laboratoire Lagrange UMR CNRS 7293, OCA, Université de Nice Sofia Antipolis, France;3. Université de Bretagne Sud/IRISA, France;1. School of Mechanical and Aerospace Engineering, Queen''s University Belfast, Ashby Building, Belfast. Northern Ireland BT9 5AH, UK;2. Engineering Mechanics Division, University of Gaziantep, 27310 Gaziantep, Turkey;3. Bombardier Aerospace, Airport Road, Belfast, Northern Ireland BT3 9DZ, UK |
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| Abstract: | Terrestrial Linear Array CCD-based panoramic cameras have been used for purely imaging purposes, but they also have a high potential for use in high accuracy measurement applications. The imaging geometry and the high information content of those images make them suitable candidates for quantitative image analysis. For that a particular sensor model has to be established and the inherent accuracy potential has to be investigated. We developed a sensor model for terrestrial Linear Array-based panoramic cameras by means of a modified bundle adjustment with additional parameters, which models substantial deviations of a real camera from the ideal one. We used 3D straight-line information in addition to tie points to conduct a full calibration and orientation without control point information. Due to the similarity of the operation of laser scanners to panoramic cameras the sensor model of the panoramic cameras was extended for the self-calibration of laser scanners. We present the joint sensor model for panoramic cameras and laser scanners and the results of self-calibration, which indicate a subpixel accuracy level for such highly dynamic systems. Finally we demonstrate the systems’ accuracy of two typical panoramic cameras in 3D point positioning, using both a minimal number of control points and a free network adjustment. With these new panoramic imaging devices we have additional powerful sensors for image recording and efficient 3D object modeling. |
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