ISPRS-Archives The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences ISPRS-Archives Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci. 2194-9034 Copernicus Publications Göttingen, Germany 10.5194/isprs-archives-XLII-2-W3-275-2017 UNDERWATER PHOTOGRAMMETRY, CODED TARGET AND PLENOPTIC TECHNOLOGY: A SET OF TOOLS FOR MONITORING RED CORAL IN MEDITERRANEAN SEA IN THE FRAMEWORK OF THE ”PERFECT” PROJECT Drap P. 1 Royer J. P. 1 Nawaf M. M. 1 Saccone M. 1 Merad D. 1 López-Sanz À. 2 Ledoux J. B. 2 Garrabou J. 2 3 Aix-Marseille Universite, CNRS, ENSAM, Universite De Toulon, LSIS UMR 7296, Domaine Universitaire de Saint-Jerome, Batiment Polytech, Avenue Escadrille Normandie-Niemen, 13397, Marseille, France Institut de Cincies del Mar-CSIC, Barcelona, Spain Mediterranean Institute of Oceanography (MIO) UM 110 CNRS/IRD, Aix Marseille Universite, Universite de Toulon, Campus de Luminy-Oceanomed, Batiment Mediterranee, 13288 Marseille, Cedex 09, France 23 02 2017 XLII-2/W3 275 282 Copyright: © 2017 P. Drap et al. 2017 This work is licensed under the Creative Commons Attribution 3.0 Unported License. To view a copy of this licence, visit https://creativecommons.org/licenses/by/3.0/ This article is available from https://isprs-archives.copernicus.org/articles/XLII-2-W3/275/2017/isprs-archives-XLII-2-W3-275-2017.html The full text article is available as a PDF file from https://isprs-archives.copernicus.org/articles/XLII-2-W3/275/2017/isprs-archives-XLII-2-W3-275-2017.pdf

PErfECT "Photogrammetry, gEnetic, Ecology for red coral ConservaTion" is a project leaded by the Laboratoire des Sciences de lInformation et des Systmes (LSIS - UMR 7296 CNRS) from the Aix-Marseille University (France) in collaboration with the Spanish National Agency for Scientific Research (CSIC, Spain). The main objective of the project is to develop innovative Tools for the conservation of the Mediterranean red coral, <i>Corallium rubrum</i>. PErfECT was funded by the Total Fundation. The adaptation of digital photogrammetric techniques for use in submarine is rapidly increasing in recent years. In fact, these techniques are particularly well suited for use in underwater environments. PErfECT developed different photogrammetry tools to enhance the red coral population surveys based in: (i) automatic orientation on coded quadrats, (ii) use of NPR (Non Photo realistic Rendering) techniques, (iii) the calculation of distances between colonies within local populations and finally (iv) the use of plenoptic approaches in underwater conditions.