Panorama of the seabed


A 3D view of the seabed for the UNEP RAC/SPA.
The RAC / SPA of the UNEP, the Organization in charge of environmental studies in the Mediterranean, commissioned EOSGIS a panoramic view of the seabed in the Mediterranean in 3D.
Copyright of the map: /SPA UNEP RAC
a common way to represent the relief of the seabed is using relief shading technique in an overhead view. This type of views presented in a very clear way the Navy relief. The RAC / SPA of the UNEP, the Organization in charge of environmental studies in the Mediterranean, commissioned EOSGIS a panoramic view of the seabed in the Mediterranean in 3D. |
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l panorama was performed using actual data from the seabed acquired by sonar, measures of the gravimetric anomalies and satellite data, allowing it to perfectly distinguish all the structures present on the bottom of the Mediterranean. A related problem with all kinds of mapping which represents the seabed is that despite being the difference in height from the sea in the very large terrestrial topography, not so much if you draw areas on the level of the sea and the seabed. This makes it's not easy to represent the Navy relief and the land together without resorting to certain "tricks", how to use a different exaggeration for marine and terrestrial altitudes. Initially it began treating the original scientific data to adapt them to the multimedia formats needed to work and perform the necessary views. |
NCE data into campaigning, was passed to the process of generating 3D screens needed to work with specialized programs of visualization of terrain and computer graphics 3D in order to give the customer a series of views of 3D from different points of view so I could select one that best comply to your needs. |
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In the panoramic views of the relief there is always to hand touch the relief, but in the representation of the marine relief this aspect is essential, either by our subjective perception of marine relief or because we have acostumbrdo to the shape of the traditional representation of the seabed, which involves the representation of relief with lighting and soft shadows. I.e., our "idea" of the seabed not supported by abrupt changes in the relief. This means the entire picture retouching work, so the end result is nice and fits our perception. In this case, the work became even more laborious, because to be actual data starting data: (a) contained errors of measurement that introduced graphic elements that were unnatural, (b) contained an excess of information, "noise", that even being accurate with the Royal Marine relief do not conform to the abovementioned: our perception of marine relief. The graphic end is presented in the image that opens this article and included three views of the area of the Mediterranean view from the West, South and East.
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