Sylvie Durrieu

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Unlike airborne multi-echo laser scanner systems, full-waveform systems are able to digitize and record the entire backscattered signal of each laser pulse. It has been demonstrated that decomposing the return waveforms into a mixture of Gaussian components was suitable. In this paper, we focus on the improvement of peak detection and of raw signal(More)
Satellite and airborne optical sensors are increasingly used by scientists, and OPEN ACCESS Remote Sens. 2015, 7 1668 policy makers, and managers for studying and managing forests, agriculture crops, and urban areas. Their data acquired with given instrumental specifications (spectral resolution, viewing direction, sensor field-of-view, etc.) and for a(More)
8 The increasing availability of Very High Spatial Resolution images enables accurate 9 digital maps production as an aid for management in the agricultural domain. In 10 this study we develop a comprehensive and automatic tool for vineyard detection, 11 delineation and characterization using aerial images and without any parcel plan 12 availability. In(More)
Remote sensing scientists work under assumptions that should not be taken for granted and should, therefore, be challenged. These assumptions include the following: 1. Space, especially Low Earth Orbit (LEO), will always be available to governmental and commercial space entities that launch Earth remote sensing missions. 2. Space launches are benign with(More)
The aim of this study was to develop a methodology to delineate accurately tree crowns using digital elevation models independently of source (laser scanned data or stereoscopic pairs) and to identify the complementary information that can be obtained from high resolution imagery. This methodology uses the Watershed algorithm as the baseline. However the(More)
We have developed a new airborne UV lidar for the forest canopy and deployed it in the Landes forest (France). It is the first one that: (i) operates at 355 nm for emitting energetic pulses of 16 mJ at 20 Hz while fulfilling eye-safety regulations and (ii) is flown onboard an ultra-light airplane for enhanced flight flexibility. Laser footprints at ground(More)
Airborne lidar systems (ALS) provide 3D point clouds of the topography by direct time measurement of a short laser pulse after reflection on the Earth surface. For the last decade, this technique has proved to be the ideal remote sensing tool for delivering very accurate digital terrain model (DTM) of the Earth surface, and then for answering main(More)