Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLI-B5, 469-476, 2016
https://doi.org/10.5194/isprs-archives-XLI-B5-469-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
 
15 Jun 2016
CALIBRATION OF THE SR4500 TIME-OF-FLIGHT CAMERA FOR OUTDOOR MOBILE SURVEYING APPLICATIONS: A CASE STUDY
C. Heinkelé, M. Labbé, V. Muzet, and P. Charbonnier Cerema Est, Laboratoire de Strasbourg, 11 rue Jean Mentelin, B.P. 9, 67035 Strasbourg, France
Keywords: SR4500, ToF Cameras, Calibration, Outdoor dynamic acquisitions Abstract. 3D-cameras based on Time-of-Flight (ToF) technology have recently raised up to a commercial level of development. In this contribution, we investigate the outdoor calibration and measurement capabilities of the SR4500 ToF camera. The proposed calibration method combines up-to-date techniques with robust estimation. First, intrinsic camera parameters are estimated, which allows converting radial distances into orthogonal ones. The latter are then calibrated using successive acquisitions of a plane at different camera positions, measured by tacheometric techniques. This distance calibration step estimates two coefficient matrices for each pixel, using linear regression. Experimental assessments carried out with a 3D laser-cloud after converting all the data in a common basis show that the obtained precision is twice better than with the constructor default calibration, with a full-frame accuracy of about 4 cm. Moreover, estimating the internal calibration in sunny and warm outdoor conditions yields almost the same coefficients as indoors. Finally, a test shows the feasibility of dynamic outdoor acquisitions and measurements.
Conference paper (PDF, 6659 KB)


Citation: Heinkelé, C., Labbé, M., Muzet, V., and Charbonnier, P.: CALIBRATION OF THE SR4500 TIME-OF-FLIGHT CAMERA FOR OUTDOOR MOBILE SURVEYING APPLICATIONS: A CASE STUDY, Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLI-B5, 469-476, https://doi.org/10.5194/isprs-archives-XLI-B5-469-2016, 2016.

BibTeX EndNote Reference Manager XML