Cartographical Data Treatment Analysis for Real Time Three-Dimensional Terrain Visualization
نویسندگان
چکیده
The real time three-dimensional terrain visualization is associated to several characteristics, such as the video board exhibition. Moreover, the representation of a virtual scene is carried out through compositions of triangles that together confer a three-dimensional aspect to the scene. The available details in this scene are directly related to the number of triangles amount used in its representation, what may become impeditive to applications like computer visualization. This article presents techniques for cartographic data processing, in order to use them these data in a real time three-dimensional terrain visualization system. Resumo. A visualização tridimensional de terrenos em tempo real está associada a diversas características, entre elas, a capacidade de exibição das placas de vídeo. Além disto, a representação de um cenário virtual é realizada através de composições de triângulos que juntos conferem um aspecto tridimensional à cena. A riqueza de detalhes presentes neste cenário está diretamente relacionada à quantidade de triângulos utilizados em sua representação, o que muitas vezes torna impeditivo seu emprego em aplicações desta natureza. Este artigo apresenta técnicas de processamento de dados cartográficos, de modo a empregá-los em um sistema de visualização tridimensional de terrenos em tempo real.
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