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Second Iteration of Photogrammetric Processing to Refine Image Orientation with Improved Tie-Points

Laboratoire en Sciences et Technologies de l’information Géographique, Institut National de l’information Géographique et Forestière, Saint-Mandé, 94160, France
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This paper is an extended version of conference paper which has been published: Nguyen, T.G.; Pierrot-Deseilligny, M.; Muller, J.M.; Thom, C. Second Iteration of Photogrammetric Pipeline to Enhance the Accuracy of Image Pose Estimation. In Proceedings of the EuroCOW 2017 High-Resolution Earth Imaging for Geospatial Information, Hannover, Germany, 6–9 June 2017; pp. 225–230.
Sensors 2018, 18(7), 2150; https://doi.org/10.3390/s18072150
Received: 14 May 2018 / Revised: 22 June 2018 / Accepted: 30 June 2018 / Published: 4 July 2018
(This article belongs to the Section Remote Sensors)
Photogrammetric processing is available in various software solutions and can easily deliver 3D pointclouds as accurate as 1 pixel. Certain applications, e.g., very accurate shape reconstruction in industrial metrology or change detection for deformation studies in geosciences, require results of enhanced accuracy. The tie-point extraction step is the opening in the photogrammetric processing chain and therefore plays a key role in the quality of the subsequent image orientation, camera calibration and 3D reconstruction. Improving its precision will have an impact on the obtained 3D. In this research work we describe a method which aims at enhancing the accuracy of image orientation by adding a second iteration photogrammetric processing. The result from the classical processing is used as a priori information to guide the extraction of refined tie-points of better photogrammetric quality. Evaluated on indoor and UAV acquisitions, the proposed methodology shows a significant improvement on the obtained 3D point accuracy. View Full-Text
Keywords: tie-points; bundle block adjustment; image orientation; camera calibration; precision mapping tie-points; bundle block adjustment; image orientation; camera calibration; precision mapping
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Truong Giang, N.; Muller, J.-M.; Rupnik, E.; Thom, C.; Pierrot-Deseilligny, M. Second Iteration of Photogrammetric Processing to Refine Image Orientation with Improved Tie-Points . Sensors 2018, 18, 2150.

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