Fully autonomous, ultra-light Unmanned Aerial Vehicles (UAV)
have recently become commercially available at very reasonable
cost for civil applications. The advantages linked to their small
mass (typically around 500 grams) are that they do not represent
a real threat for third parties in case of malfunctioning. In addition,
they are very easy and quick to deploy and retrieve. The
drawback of these autonomous platforms certainly lies in the relatively
low accuracy of their orientation estimates. In this paper,
we show however that such ultra-light UAV’s can take reasonably
good images with large amount of overlap while covering areas
in the order of a few square kilometers per flight.