00985963

Component

https://doi.org/10.3141/1899-22

http://scholar.google.com...uang&publication_year=2004

An approach to the efficient rendering of terrain surfaces through the use of continuous level of detail but with maintenance of the integrity of added transportation features such as roads, bridges, railways, bus stops, and traffic lights is explored. A quadtree structure was developed to define the terrain surface as a gridded height field and, in the rendering process, to project transportation features in three dimensions onto the terrain surface on the fly. Also, with the viewpoint moving, the connected strips and fans between transportation features and terrain meshes were dynamically adjusted to reduce the projected pixel error. Consequently, the massive terrain and transportation features can be visualized simultaneously in an efficient way. This approach is illustrated with several snapshots, and the efficiency of the algorithms is also demonstrated.

This paper appears in Transportation Research Record No. 1899, Driver and Vehicle Simulation, Human Performance, and Information Systems for Highways; Railroad Safety; and Visualization in Transportation.

00985941

English

p. 175-180

2004

Transportation Research Record

0309094917

Figures (8) ; References (11) ; Tables (1)

Algorithms; Infrastructure; Terrain; Three dimensional displays; Transportation; Visualization

Continuous level of detail

Design; Planning and Forecasting; Transportation (General); I21: Planning of Transport Infrastructure

TRIS, TRB, ATRI

Feb 16 2005 12:00AM

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