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Première	 étape	 vers	 l’automa2sa2on	 du	
recensement.	
Valoriser	ses	données…	
Gwénaël	Duclos	–	WIPSEA	–	Congrès	Ecolotech	2016	–	3	Novembre	2016
Evaluer	leur	statut	de	conserva2on:	
-	répertorier	les	espèces	présentes	
-	leur	distribu2on	
-	l’état	de	santé	de	leurs	habitats	
>	Campagnes	d’observa2on	
>	Images	aériennes
Grande	 quan2té	
d’images	brutes	à:	
-  trier,	
-  a r c h i v e r	 e t	
analyser.
Quizz	
•  Qui	a	déjà	u2lisé	un	drone	?	
	
•  Qui	a	déjà	u2lisé	des	photos	aériennes	?	
•  Qui	a	déjà	u2lisé	un	piège-photo	?	
•  Qui	a	déjà	u2lisé	une	caméra	de	vidéosurveillance	?	
	
Pour	réaliser	une	étude:	
•  Qui	a	traité	ces	photos/vidéos	«	à	la	main	»	?	
•  Qui	a	traité	ces	photos/vidéos	avec	un	logiciel	?
SEMMA-DRONE	
	
Taux	de	détec2on:	71%	
Précision:	63%	(4	fausses	pour	6	vraies)
Scores	de	probabilité	
Méthodes	d’appren2ssage	sta2s2que
16%	
99%	
2%	
57%	
89%	
84%	
43%	
41%	
55%	
Seuil	de	probabilité	à	80%	Seuil	à	50%	Seuil	à	40%
Facteur	limitant:	accès	aux	données	
labellisées
Logiciel	Harmony
Harmony	Community:		
-  Accès	privilégié	aux	solu2ons	semi-automa2ques	
-  Inclusion	possible	des	travaux	précédents	
Appren2ssage	con2nu	toujours	plus	rapide	et	efficace
Ajout	manuel	des	
caractéris2ques	de	
chacune	des	tortues	
iden2fiées	
Semma-Drone	(plugin	QGIS)
Adapta2on	à	d’autres	données	
	
•  Images	floues	
•  Turbidité
Crédit	 Photo:	 Equipe	 Ecologie	
comportementale	 du	 CEFE:	
Aurélie	 Célerier,	 Sylvia	 Campagna	
et	Bertrand	Bouchard.	
Projet	«	Communica2on	chimique	chez	les	Cétacés	»
Exemple	de	détec2ons	obtenues	sur	des	vidéos	
Ou	des	vidéos
Exemples	de	détec2ons	obtenues	sur	des	photos
Exemples	de	détec2ons	obtenues	sur	des	photos
Exemples	de	détec2ons	obtenues	sur	des	photos
Merci	!	
	
	
	
	
Gwénaël	Duclos		
Ecology	and	Vision	Engineer	
+33	(0)6	75	40	38	01	
gwenael.duclos@wipsea.com

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Valoriser ses données: première étape vers l'automatisation du rescensement