In this talk I will introduce marine seismic acquisition technologies and focus on solutions to maximize the bandwidth of the measured data. This involves detecting and removing the components of the wavefields that are reflected at the sea surface and that propagate downward: these downgoing reflections, called “ghosts” in literature, interfere with the upgoing wavefield, that is generated by ...

The classification of coralline algae commonly relies on the morphology cells and reproductive structures, along with thallus organization, observed through Scanning Electron Microscopy (SEM). Nevertheless, species identification based often leads to uncertainty, due their general plasticity. Evolutionary environmental studies featured for ecological significance in both recent past Oceans need...

Underwater video is being increasingly used to assess the impact of human activities in marine habitats, as a complementary tool for the assessment of commercial stocks. But, analysing video images manually to study and evaluate marine habitats is a lengthy and tedious task. This paper proposes an automatic method to detect the Norway lobster (Nephrops Norvegicus) an important east-Atlantic and...

Sediment profile imagery (SPI) is a remote sensing technique that is used for determining whether the marine sediments provide the suitable habitat for benthic (bottom-dwelling) fauna. The SPI technique is based on an inverse periscope that penetrates the seabed and the captured images are analysed in order to evaluate the activity of the resident marine fauna and the overall level of sediment ...

Marine birnavirus (MBVs) infect a wide range of fish and shellfish. Yet their mode of transmission is still unclear. To determine marine plankton serve as a vector for MABVs. The marine birnavirus (MABVs) is a member of Aquabirnavirus and an opportunistic pathogenic form among eukaryotic marine organisms and determine the viral presence in zooplankton as a vector, molecular diagnosis can be use...

Monomolecular surface films (“sea slicks”) are well known to dampen small-scale waves at the water surface, and thereby to influence transport processes at the air-sea interface. Because of their strong wave-damping capabilities they can often be delineated on synthetic aperture radar (SAR) imagery, but also on satellite imagery acquired in the visible and infrared spectral ranges. Since sea sl...

Confocal laser scanning rnicroscopy (CLSM) was used to examine living organisms within marine biofilms growing on microscope slides and on natural opaque and uneven substrata such as rocks and shells. The results were compared to images of identical fields observed under transmitted llght and phase contrast microscopy and scanning electron microscopy. Confocal microscopy proved superior in sevc...

Textual annotations enhance visualizations and provide additional information such as object names or measures, e.g. volumes or distances. They are essential for surgery planning, in particular for documentation and collaborative discussions. For optimal use, it is crucial that the relation between visualized objects and related annotations is unambiguous and easily perceived. We describe a fra...

Recently, different approaches for uncalibrated stereo have been suggested which permit projective reconstruction from multiple views. These use weak calibration which is represented by the epipolar geometry, and so no knowledge of the intrinsic or extrinsic camera parameters is required. In this paper we consider projective reconstructions from pairs of views, and compare a number of the avail...