This activity was one of the founding activities of the Optics department at its origin, in the mid eighties, as we worked on optical signal and image processing and optical computing. Then combined with the capacity of manufacturing in-house liquid crystal spatial light modulator (SLM), the department has been involved during almost ten years in the design and fabrication of optical correlators for various pattern recognition tasks (e.g. road signs, fingerprint radar signature recognition and detection) giving rise to original algorithm filter developments as well as correlator technical advances (compact packaging, processing speed, reliability).
During the last decade, this activity declined progressively till a recent revival of interest in Intelligent Transportation Systems dealing with the application of advanced and emerging technologies (computers, sensors, control, communications, and electronic optical devices) in transportation to save lives, time, money, energy and the environment. We are currently collaborating with SME Dotmobil, on automatic recognition of road signs and lane markings.
In parallel, we have started a new activity in the field of oceanographic sensors in collaboration with state institutes such as Ifremer and Shom which are in our immediate environment, as well as with industrialists such as Martec and NKE, focusing on salinity sensors to be embedded into sea profilers and on Scattering-Attenuation Meters.
Finally, we have proposed novel non-invasive encryption techniques for high data rate optical transmission networks, thereby establishing a link between our know-how in the field of filter design using iterative techniques and our sound knowledge of propagation in optical networks.