Underwater 3D Imaging by a Structured Light System

With the development of marine economy, the demand of underwater 3D imaging technology has become more insistent. Due to the absorption and scattering of water, the projection distance and the imaging range are shortened, which directly affects the applications and effectiveness of structured light techniques in underwater detection. In this paper, the imaging model of underwater camera is studied. An underwater structured light imaging system is established. A binary coding algorithm is investigated. The experimental results show that the proposed system can achieve a high accuracy measurement and has great potentials in underwater observing and engineering applications.