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Proceedings Paper

Underwater camera with depth measurement
Author(s): Wei-Chih Wang; Keng-Ren Lin; Chi L. Tsui; David Schipf; Jonathan Leang
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Paper Abstract

The objective of this study is to develop an RGB-D (video + depth) camera that provides three-dimensional image data for use in the haptic feedback of a robotic underwater ordnance recovery system. Two camera systems were developed and studied. The first depth camera relies on structured light (as used by the Microsoft Kinect), where the displacement of an object is determined by variations of the geometry of a projected pattern. The other camera system is based on a Time of Flight (ToF) depth camera. The results of the structural light camera system shows that the camera system requires a stronger light source with a similar operating wavelength and bandwidth to achieve a desirable working distance in water. This approach might not be robust enough for our proposed underwater RGB-D camera system, as it will require a complete re-design of the light source component. The ToF camera system instead, allows an arbitrary placement of light source and camera. The intensity output of the broadband LED light source in the ToF camera system can be increased by putting them into an array configuration and the LEDs can be modulated comfortably with any waveform and frequencies required by the ToF camera. In this paper, both camera were evaluated and experiments were conducted to demonstrate the versatility of the ToF camera.

Paper Details

Date Published: 1 April 2016
PDF: 6 pages
Proc. SPIE 9805, Health Monitoring of Structural and Biological Systems 2016, 980529 (1 April 2016); doi: 10.1117/12.2219013
Show Author Affiliations
Wei-Chih Wang, National Tsinghua Univ. (Taiwan)
Univ. of Washington (United States)
Keng-Ren Lin, Univ. of Washington (United States)
Chi L. Tsui, Univ. of Washington (United States)
David Schipf, Univ. of Washington (United States)
Jonathan Leang, Univ. of Washington (United States)

Published in SPIE Proceedings Vol. 9805:
Health Monitoring of Structural and Biological Systems 2016
Tribikram Kundu, Editor(s)

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