Journal
OPTICS EXPRESS
Volume 23, Issue 20, Pages 25795-25803Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.23.025795
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Funding
- National Science Foundation (NSF) [CMMI-1300376]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1531048] Funding Source: National Science Foundation
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This research presents a novel method to calibrate a microscopic structured light system using a camera with a telecentric lens. The pin-hole projector calibration follows the standard pin-hole camera calibration procedures. With the calibrated projector, the 3D coordinates of those feature points used for projector calibration are then estimated through iterative Levenberg-Marquardt optimization. Those 3D feature points are further used to calibrate the camera with a telecentric lens. We will describe the mathematical model of a telecentric lens, and demonstrate that the proposed calibration framework can achieve very high accuracy: approximately 10 mu m with a volume of approximately 10(H) mm x 8(W) mm x 5(D) mm. (C) 2015 Optical Society of America
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