|
Title
|
|
|
|
3D sparse imaging in biosonar scene analysis
| |
|
Author
|
|
|
|
| |
|
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. |
| |
|
Language
|
|
|
|
English
| |
|
Source (book)
|
|
|
|
SPARS'09 :Signal Processing with Adaptive Sparse Structured Representations (2009)
| |
|
Publication
|
|
|
|
2009
| |
|
Volume/pages
|
|
|
|
5 p.
| |
|