Experimentation of structured light and stereo vision for underwater 3D reconstruction

Current research on underwater 3D imaging methods is mainly addressing long range applications like seafloor mapping or surveys of archeological sites and shipwrecks. Recently, there is an increasing need for more accessible and precise close-range 3D acquisition technologies in some application fie...

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Bibliographic Details
Published in:ISPRS journal of photogrammetry and remote sensing 2011-07, Vol.66 (4), p.508-518
Main Authors: Bruno, F., Bianco, G., Muzzupappa, M., Barone, S., Razionale, A.V.
Format: Article
Language:English
Subjects:
3D reconstruction
absorption
Acquisitions
air
Animal, plant and microbial ecology
Applied geophysics
Biological and medical sciences
coral reefs
Earth sciences
Earth, ocean, space
Exact sciences and technology
Fundamental and applied biological sciences. Psychology
General aspects. Techniques
image analysis
Imaging in turbid medium
Internal geophysics
Lighting
Marine
marine environment
Marketing
monitoring
Photogrammetry
Reconstruction
Sea beds
Structured light
surveys
Teledetection and vegetation maps
Three dimensional
Turbidity
Underwater
Underwater imaging
vision
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Summary:Current research on underwater 3D imaging methods is mainly addressing long range applications like seafloor mapping or surveys of archeological sites and shipwrecks. Recently, there is an increasing need for more accessible and precise close-range 3D acquisition technologies in some application fields like, for example, monitoring the growth of coral reefs or reconstructing underwater archaeological pieces that in most cases cannot be recovered from the seabed. This paper presents the first results of a research project that aims to investigate the possibility of using active optical techniques for the whole-field 3D reconstructions in an underwater environment. In this work we have tested an optical technique, frequently used for in air acquisition, based on the projection of structured lighting patterns acquired by a stereo vision system. We describe the experimental setup used for the underwater tests, which were conducted in a water tank with different turbidity conditions. The tests have evidenced that the quality of 3D reconstruction is acceptable even with high turbidity values, despite the heavy presence of scattering and absorption effects.
ISSN:0924-2716
1872-8235
DOI:10.1016/j.isprsjprs.2011.02.009