Project: NSF Award #0133736. CAREER: Unifying Segmentation and Other Image Processing Problems via Variational PDE's.
Visiting researcher at CINECA, Bologna (Italy), within the High Performance Computing Europa Project. (2008)
Collaborator with the Grupo de Tratamiento de Imágenes (GTI) which is part of the Signals, Systems and Radiocommunications Department (Departamento de Señales, Sistemas y Radiocomunicaciones - SSR) at the Escuela Técnica Superior de Ingenieros de Telecomunicación (ETSIT), Universidad Politécnica de Madrid (UPM), since July 2001:
Internship (practical training) from July 2001 to September 2001, at the same time that collaborator in research IST project 1999-10576 VISIRE (Virtual Image-Processing System for Intelligent Reconstruction of 3D Environments), as part of the Fifth European Union Framework Programme for Research and Technological Development.
Collaboration in research project TIC2001–3069: “Acquisition and representation of 3-D scenes for virtual reality applications” (Adquisición y representación de escenas 3D para aplicaciones de realidad virtual), part of the National Information Technology and Communications Program (Programa Nacional de Tecnologías de la Información y las Comunicaciones - TIC) of the Spanish Science and Technology Department, since October 2001.
Received a scholarship for the aforementioned project TIC2001–3069 after the completion of the bachelor's coursework, from July 2003 to June 2004.
Left: Images from one of the two calibrated cameras and region of interest to be reconstructed. Right: 3-D reconstructed surface shape of the ocean waves, pseudocolored from blue (low height) to red (large height).
Input stereo images, acquired at a framerate of 10Hz, are of size 1624 x 1236 pixels.
Parameters of the region of interest. Physical area covered: 13 x 13 squared meters. Grid size: 513x513 points. Grid resolution: 2.5 cm.
Surface texture (left) and shape (right) given by the variational 3-D reconstruction method of Gallego et al. for the robust 3-D stereoscopic reconstruction of ocean waves from multi-view stereo videos.
Right: surface shape (height) is greyscale encoded: dark means low wave height (troughs) and bright means large wave height (crests).
Modeled images (within the region of interest) superimposed on the original images. Modeled images are generated using the surface shape (height) and radiance (texture) computed by the variational graph method for the robust 3-D stereoscopic reconstruction of ocean waves from multi-view stereo videos.
Modeled images (within the region of interest) superimposed on the original images. Modeled images are generated using the surface shape (height) and radiance (texture) computed by the variational method of Gallego et al. for the robust 3-D stereoscopic reconstruction of ocean waves from multi-view stereo videos. The reconstructed region has been clearly marked by modifying the intensities in the outside.
Error images: absolute difference between original and modeled images within the region of interest, magnified by a factor of 4 to notice it.
"Joint 4-D Variational Stereo Reconstruction and Camera Calibration Refinement for Oceanic Sea State Measurements"
P.-C. Shih, G. Gallego, A. Yezzi, F. Fedele.
Proceedings of ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering (OMAE2014), San Francisco, California, USA, June 8-13, 2014.
Paper No. OMAE2014-23653. Post-print.
"Second-order Riemannian Active Contours for Image Segmentation"
A. Valdés, J.I. Ronda, G. Gallego.
International Conference on Scientific Computation And Differential Equations (SciCADE), Sep. 16-20, 2013, Valladolid, Spain.
"A Case Study of Geometric Modelling via 3-D Point Interpolation for the Bathymetry of the Rabasa Lakes (Alicante, Spain)"
A. de la Hera, E. López-Pamo, E. Santofimia, G. Gallego, R. Morales, J.J. Durán-Valsero, J.M. Murillo-Díaz
Proceedings of the 15th Annual Conference of the International Association for Mathematical Geosciences (IAMG 2013). Sept. 2-6 2013. Madrid, Spain.
Mathematics of Planet Earth. Lectures Notes in Earth System Sciences 2014, pp. 503-506.
Springer. ISBN 978-3-642-32407-9; ISSN: 2193-8571. Pardo-Igúzquiza, E.; Guardiola-Albert, C.; Heredia, J.; Moreno-Merino, L.; Durán, J.J.; Vargas-Guzmán, J.A. (Eds.) doi: 10.1007/978-3-642-32408-6_110,
Post-print at Archivo Digital UPM.
"Coherent space-time stereoscopic reconstruction of sea states"
G. Gallego, A. Yezzi, F. Fedele, A. Benetazzo.
12th International Workshop on Wave Hindcasting and Forecasting and 3rd Coastal Hazards Symposium Oct. 30-Nov. 4, 2011, Kohala Coast, Hawaii’s Big Island.
(Schedule - program)
"A variational wave acquisition stereo system for the 3-D reconstruction of ocean waves"
G. Gallego, A. Yezzi, F. Fedele, A. Benetazzo, L. Cavaleri.
18th Waves in Shallow water Environments (WISE), May 22-26, 2011, Qingdao, China.
"Understanding extreme waves via a variational wave acquisition stereo system"
F. Fedele, G. Gallego, A. Yezzi, A. Benetazzo.
Session III: Statistical Models. Proceedings of the Workshop Rogue Waves, Oct 13-15, 2008, Brest, France.
(Full written proceedings (22 MB),
Official link to this paper)
"Euler characteristics and maxima of oceanic sea states via a variational wave acquisition stereo system"
F. Fedele, G. Gallego, A. Benetazzo, A. Yezzi.
31° Convegno Nazionale di Idraulica e Costruzioni Idrauliche. Perugia, Italy, Sept. 9-12, 2008.