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- W1974464009 abstract "This paper presents an efficient approach for rendering terrain elevation and feature data applicable to cockpit displays presenting guidance information in a 3-dimensional format. A primary goal is to achieve a real-time capability with a high update rate (25-30 images per sec) using a low-cost PC based computer. Basically, the data management approach consists of a hierarchical adaptive triangulation technique for dealing with the terrain elevation data in the memory. The interpolation hierarchical surplus is used as a criterion to detect redundant data and serves to control the error of the terrain approximation. A high frame rate can be reached with this level-of-detail mechanism, including an easy visibility check due to the hierarchical adaptive strategy. Furthermore, a special organization of the data is developed in order to reduce the required memory and to manage a large database. For this purpose, parts of the data can be exchanged during runtime with the use of a particular data format on harddisc. On multiprocessor computer architectures, the re-loading data process can be performed in the background without interrupting the rendering by starting parallel running tasks (threads) while on single processor architectures a scheduler is sharing CPU time among the graphic and reloading processes." @default.
- W1974464009 created "2016-06-24" @default.
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- W1974464009 date "2002-07-16" @default.
- W1974464009 modified "2023-09-23" @default.
- W1974464009 title "<title>Efficient management of terrain elevation and feature data for 3D guidance displays</title>" @default.
- W1974464009 doi "https://doi.org/10.1117/12.474419" @default.
- W1974464009 hasPublicationYear "2002" @default.
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