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http://dx.doi.org/10.7780/kjrs.2003.19.6.431

Analysis on 3D Positioning Precision Using Mobile Mapping System Images in Photograrmmetric Perspective  

조우석 (인하대학교 토목공학과)
황현덕 (인하대학교 지리정보공학과)
Publication Information
Korean Journal of Remote Sensing / v.19, no.6, 2003 , pp. 431-445 More about this Journal
Abstract
In this paper, we experimentally investigated the precision of 3D positioning using 4S-Van images in photograrmmetric perspective. The 3D calibration target was built over building facade outside and was captured separately by two CCD cameras installed in 4S-Van. After then, we determined the interior orientation parameter for each CCD camera through self-calibration technique. With the interior orientation parameter computed, the bundle adjustment was performed to obtain the exterior orientation parameters simultaneously for two CCD cameras using calibration target image and object coordinates. The reverse lens distortion coefficients were computed and acquired by least squares method so as to introduce lens distortion into epipolar line. It was shown that the reverse lens distortion coefficients could transform image coordinates into lens distorted image coordinates within about 0.5 pixel. The proposed semi-automatic matching scheme incorporated with lens distorted epipolar line was implemented with scene images captured by 4S-Van in moving. The experimental results showed that the precision of 3D positioning from 4S-Van images in photograrmmetric perspective is within 2cm in the range of 20m from the camera.
Keywords
4S-Van; Camera Lens Distortion; Epipolar Line; Image Matching.;
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