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Sensors 2016, 16(9), 1534; doi:10.3390/s16091534

A Laser Line Auto-Scanning System for Underwater 3D Reconstruction

Engineering College, Ocean University of China, 238 Songling Road, Qingdao 266100, China
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Author to whom correspondence should be addressed.
Academic Editors: Thierry Bosch, Aleksandar D. Rakić and Santiago Royo
Received: 20 July 2016 / Revised: 15 September 2016 / Accepted: 16 September 2016 / Published: 20 September 2016
View Full-Text   |   Download PDF [4050 KB, uploaded 23 September 2016]   |  

Abstract

In this study, a laser line auto-scanning system was designed to perform underwater close-range 3D reconstructions with high accuracy and resolution. The system changes the laser plane direction with a galvanometer to perform automatic scanning and obtain continuous laser strips for underwater 3D reconstruction. The system parameters were calibrated with the homography constraints between the target plane and image plane. A cost function was defined to optimize the galvanometer’s rotating axis equation. Compensation was carried out for the refraction of the incident and emitted light at the interface. The accuracy and the spatial measurement capability of the system were tested and analyzed with standard balls under laboratory underwater conditions, and the 3D surface reconstruction for a sealing cover of an underwater instrument was proved to be satisfactory. View Full-Text
Keywords: underwater 3D reconstruction; laser line system; auto-scanning underwater 3D reconstruction; laser line system; auto-scanning
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Chi, S.; Xie, Z.; Chen, W. A Laser Line Auto-Scanning System for Underwater 3D Reconstruction. Sensors 2016, 16, 1534.

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