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A method for the three-dimensional reconstruction of underwater objects

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Abstract
This report describes a method to estimate the three-dimensional aspects of underwater objects using a sequence of sonar images. The data are recorded by a sector scanning sonar, carried by an underwater vehicle which follows a circular track around the object. The sonar images are segmented into three kinds of regions : echo, shadow and background. The echo information corresponds to the signal back-scattered by the object while the shadow is due to the absence of back-scattering from behind the object. The remaining information composes the background. The reconstruction scheme processes the echo and shadow information separately. A two-dimensional elevation map is estimated from the shadow information and a two-dimensional reflection map is computed from the echoes.

URI
http://hdl.handle.net/20.500.12489/367

Report Number
SM-310

Collections
  • Technical Reports

Date
1996/10

Author(s)
Zerr, Benoit
; 
Stage, Bjarne

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SM-310-UU.pdf (2.772Mb)

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