Resumo

CASTRILLON GARRIDO, José Luis; GONZALEZ PENATE, Nelson  e  ARIAS NARANJO, Gilberto. Three dimensional visualization of geographic information layers from digital elevation models. Rev cuba cienc informat [online]. 2016, vol.10, suppl.1, pp. 58-70. ISSN 2227-1899.

ABSTRACT Three dimensional representation of georeferenced geographic information is quite useful in several science fields. The digital elevation models used on that purpose may be large in size, making impossible their direct visualization. Another element favoring the realistic representation of the scene is the insertion of optical phenomena in the water surfaces, e.g. light reflection and refraction. The main goal of the present work is focusing on the realistic visualization of large digital elevation models including the ones with water surfaces. The batched dynamic adaptive meshes model was used to obtain the geometry in different levels of detail and the Projection Texture Mapping technique to supply the water layers with the already mentioned optical properties. Results shown the effectiveness of the employed techniques, allowing the realistic visualization of terrain and water surfaces from large digital elevation models in the order of hundreds of millions of samples.

Palavras-chave : Digital elevation model; multiresolution model; realism; three dimensions.

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