Processing techniques for multi-spectral laser line scan images

Effects of Multiple Scattering on the Implementation of an Underwater Wireless Optical Communications Link

“…As previously mentioned, because radio frequencies undergo large amounts of attenuation in water, traditional RF and radar systems are not an optimum choice for this task. However optical systems employing either continuous wave (CW) [9,10] or pulsed/ranged gated [11] techniques are gaining popularity for use in underwater scenarios. FAMIS is a novel system that attempts to marry the transmission characteristics of optical energy, with the well-established signal processing techniques of RF and radar systems.…”

Seabed Classification at Ocean Margins

“…The emergence of high repetition solid state blue-green lasers and the latest developments in fast electronics provide new possibilities, although the operational range remains determined by the red channel (more attenuated in water). Originally designed to identify mines and mine-like objects in the shallow-water littoral environment, this and other similar systems are now used for the identification of anthropogenic materials and biological targets on the seafloor (Coles et al, 1998). Polarisation signature aids in material discrimination and identification, but the applications presented have not broached geological objects yet.…”

An algorithm of image processing for underwater range finding by active triangulation

“…In fact, it will degrade it. To carry out various underwater applications, diverse methods of image processing have been developed over the years (Coles et al, 1998;Ogawa, 2000;Chen, 2001). Recently, an approach of background equalization was developed for objects detection (Nevis, 1996(Nevis, , 1997.…”