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3D sparse imaging in biosonar scene analysis

Abstract : Bats can navigate through foliage thanks to their biosonar. To build an image of their environment they emit ultrasonic pulses and analyse the corresponding echo signals which consist of a complex superposition of a set of highly overlapping reflected pulses coming from the targets at their different positions. We propose to use a sparse representation of echoes in overcomplete dictionaries to perform 3D imaging using biosonar signals. We show that even if the echosignal is a superposition of highly overlapping echoes the algorithm can efficiently reconstruct the image only from a single measurement. Those results can be useful from a robot sensor perspective where the robot has to find a free path. It can also help to understand better how bats can efficiently navigate through dense foliage.
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Contributor : Ist Rennes <>
Submitted on : Thursday, March 19, 2009 - 3:44:59 PM
Last modification on : Monday, June 20, 2016 - 2:10:32 PM
Long-term archiving on: : Friday, October 12, 2012 - 1:50:28 PM


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  • HAL Id : inria-00369380, version 1



Bertrand Fontaine, Herbert Peremans, Jan Steckel. 3D sparse imaging in biosonar scene analysis. SPARS'09 - Signal Processing with Adaptive Sparse Structured Representations, Inria Rennes - Bretagne Atlantique, Apr 2009, Saint Malo, France. ⟨inria-00369380⟩



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