Gabriel Oliver-Codina

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A Laser-based Structured Light System (LbSLS) has been designed to perform underwater close-range 3D reconstructions even with high turbidity conditions and outperform conventional systems. The system uses a camera and a 532 nm green laser projector. The optical technique used is based on the projection of a pattern obtained placing a Diffractive Optical(More)
An automatic classifier algorithm has been designed to assess the population of Posidonia oceanica over a set of underwater images at Palma Bay. Law's energy filters and statistical descriptors of the Gray Level Co-occurrence Matrix have been use to correctly classify the input image patches in two classes: Posidonia oceanica or not Posidonia oceanica. The(More)
Stereo vision and structured light are compared in a common underwater environment with known dimensions and objects. Two different sensors are mounted on top of a Cartesian robot that moves with a known and programmed trajectory. The resulting point clouds from each sensor are compared in terms of distance from point to point, and measurements in the(More)
Detection and mapping of Posidonia Oceanica (P.O.) meadows in the Mediterranean sea is crucial to preserve the endemic ecosystems and to underscore the negative impact of many anthropogenic activities. Furthermore, navigating Autonomous Underwater Vehicles (AUV) in marine environments where the ground is densely colonized with P.O. is nowadays a challenging(More)
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