In this paper, we propose a complete 2.5D and 3D human face acquisition framework based on a stereo sensor coupled with a structured lighting source. We aim to develop an accurate and low-cost solution dedicated to the 3D model-based face recognition techniques (FRT). In our approach, we first calibrate the stereo sensor in order to extract its optical characteristics and geometrical parameters...

Surface solar radiation forecasting permits to predict photovoltaic plant production for a massive and safe integration of solar energy into the electric network. For short-term forecasts (intra-day), methods using images from meteorological geostationary satellites are more suitable than numerical weather prediction models. Forecast schemes consist in assessing cloud motion vectors and in extr...

Entanglement is the cornerstone of quantum information technology. Its wide-ranging applications include tests of the foundations of quantum mechanics, implementations of quantum algorithms, cryptographic communication procedures, measurement-accuracy enhancements, etc. Arguably, the most important source of entanglement is spontaneous parametric down-conversion ~SPDC! in nonlinear optical crys...

Control of the field of few-cycle optical pulses has had an enormous impact on attosecond science. Subcycle pulses open the potential for non-adiabatic phase matching while concentrating the electric field so it can be used most efficiently. However, subcycle field transients have been difficult to generate. We exploit the perturbative response of a sub-100 μm thick monocrystalline quartz plate...

We theoretically analyze a new class of aperiodic phase mismatch. The phase-matching function that is chosen depends on the calculated second-harmonic amplitude generated in the device during the propagation of the fundamental beam at given input intensity and wavelength. We show that, in such a configuration, the fields evolve toward the eigenmodes of a x (2) two-wave mixing process. Hence a c...