ONCET
Online Cetacean 4D Tracking system
Virtual reality for real-time multiple whale tracking
Realite virtuelle augmentee pour l'analyse du comportement des cetaces en plongee
2005-2014

Here are few demonstrations of our ONCET system, first on international challenge on whale tracking using passive acoustics. The demonstrations data are public, from the Detection and Localization of Marine Mammals Using Passive Acoustics workshop in 2005 at the Oceanographic Museum of Monaco.
Click on this picture to run the main demo (cliquez sur cette image pour voir la demo principale, pour les details voir dessous, ou ecrire a glotin@univ-tln.fr):

Our algorithm is according to our knowledge, the only one producing precize relevant tracks even in the case of multiple simultaneous clicking whales, here applied to Physeter Catodon (ellipse error for estimation at 2 km = size of the animal). End of 2012, there is no publication with similar complete results. Some publications from the SOEST (Hawaii-USA) and the from Naval Undersea Warfare Center (NUWC-USA) are presenting partial results, that match to ours.

Descriptions
On the demonstration A1 to A3 below, we show our tracking results by passive acoustics analysis of the recordings given by NATO AUTEC Bahamas distributed as a challenge during the 2005 Monaco workshop. You see the sperm whale hunting : we represent the preys where we hear the final approach.

On the demonstrations B1 to B3 below, we show our results at the same international but on another dataset : we simultaneoulsy track the four whales that are recorded. These results tend to confirm some correlations between acoustic emissions and whale behavior. This is currently analysed in our team Dyni.

Through these demonstrations, you can listen to the whales, watch them diving, you may guess some specific aoustic emissions for hunting, communicating...
Any feedback / question is very welcome to glotin@univ-tln.fr.

Description : The 3D and 2D demonstrations are given on real deep ocean data from the Atlantic Undersea Test Center - Bahamas. These data were distributed for the international benchmark at the MONACO 2005 workshop. They last 25 minutes, recorded by bottom mounted hydrophones at -1500 meters, in the tongue of the ocean - Bahamas - Frequency sample 48 Khz.

Our first reference on multiple whale tracking with results for A and B demonstrations is : Whales cocktail party: a real-time tracking of multiple whale, by Glotin, Giraudet and Caudal, in int. Journal Canadian Acoustics, 2008/3, vol 36, 7 pages. See for more details in our recent published papers (here in annexe) in Eurasip, Ap plied acoustics, ICASSP... (or ask us for them : glotin@univ-tln.fr)
Comparisons to other systems are available in the bibliography, like for the Naval Undersea Warefare Center in this paper : Results on the same data set of the Naval Undersea Warefare Center 2006



LINKS TO DEMONSTRATIONS :

A) VIRTUAL REALITY on true recordings, in 3D, of one spermwhale diving in the bahamas sea in 2003 (recordings from NATO):
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A1) 3D whale tracking movie, you listen to the true record that has been used to compute the track that is ploted.
Clic here to see 4D virtual reality representation of true records (12 minutes, .avi, 63Mo)

You can also play a JAVA version in 3D of this computed track from Bahamas set 2, , see below to control the camera position

A2) Other animations of the same results
Other demo (from ONCET PIMC_TRACK 2.0) are available in .avi or .flv format, with various hydrophones records, and some particular interesting short samples. To get these .avi or .flv demo files, load them from the link below, where you also find the VLC.exe player if you need : FLASH_PLAYER_or_AVI_MOVIES


A3) 3D animated demo on JAVA (set 2 Bahamas, 1 whale) :
An automatic JAVA 3D animation is available at this link : JAVA 3D animation
A sample view of this animation is given at the top of this page. AMPG movie is available in section A. It is the result of a team work, A. Monnin, J. Pivi...



B) 2D and 3D DEMONSTRATIONS of the Tracking of FOUR WHALES using real NATO records (Bahamas):
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You listen to the hydrophone 1 (top right), and you see the four whales (one color for each) moving during 25 minutes.
UpLoad (clic right) or play (clic left) one of these two demo files of ONCET :

B1) The accelerated 2D demo, by 10 times, without sound track : Fast 2D demo : tracking simultaneously 4 sperm whales (mpeg 6Mo)

Play this demo with a mpeg player. You'll see the whales moving, one color for each, in the (x,y) plan view. For the longest demo B2, you listen to the hydrophone 1.

B2) Same as B1, by normal speed, with sound from hydrophone 1 (mp4 format, 29 Mega) : Full DEMO MPEG4 (~30 Mo)


B3) Same as B2, but in 3D visualisation using a widows .exe allowing zooms and moves of the camera. Load the whole package demo_3d.zip and install it on your Windows system. Then click on : "cachalots.exe" ; go to menu "fichier" -> "charger les donnees", ; choose "donnees.txt" ; click the play button... ; read "Aide menu" to get help on how to move the camera
The whales position are given in files http://glotin.univ-tln.fr/PIMC/DEMO/demo_3d/data/position_baleine_*.txt one file for each whale.
Format =
t(s) x y z(m) / no confidence level yet

To run these demo click : demo_3d
or load:
demo_3d.zip


C) REFERENCES/ ANNEXE :
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Whale cocktail party: real-time multiple tracking and signal analyses H Glotin, F Caudal, P Giraudet - Canadian Acoustics, 2008

Automatic indexing for content analysis of whale recordings and XML representation, Benard F. and H Glotin, in Eurasip int. Journal on Advances in Signal Processing, 2010

Proceedings of the International Workshop on Detection and Localisation of Marine Mammals - Pavia - Italia - 2009, containing some of our abstracts : Booklet workshop 2009


More details on physeter behavior are given in this (french) report ofthe PELAGOS BOUSSOLE project report with records from Antibes.

SLIDES:
Slides (in French) with the fundamentals and other informations

Other Sound Samples:

You can listen here to Stenella dolphins, recorded in the Port-Cros National Park by our system : you have there social calls AND the dolphin biosonar, having some similarities with Physeter sonar : PNPC Dolphin Sonar june 2011.

You can listen to the multipulse structure of each clic of an Sperm Whale, taking attention to this very high signal to noise ratio record : VERY CLEAR Sperm Whale SONAR, recorded by us near Toulon, the 17th of sept. 2012.

Your feedback is usefull, please do not hesitate to write it to glotin@univ-tln.fr