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A data quantity optimization algorithm in terrain visualization

2008; SPIE; Volume: 7143; Linguagem: Inglês

10.1117/12.812651

1996-756X

Yabin Li, Jianhua Gong,

Simulation and Modeling Applications

In order to ascertain appropriate data quantity in terrain visualization for some certain computers, the relationship model of FPS and data quantity has been put forward in this paper. Regarding the model, the time of a whole terrain visualization cycle is divided into two parts: data unrelated time and data related time. Based on the relationship model, a data optimization algorithm is developed, and the influences of timer error and data reading error are considered in terms of the algorithm. The algorithm is tested in a terrain visualization system developed with C++, FLTK and OpenGL. The results of experiment shows that the algorithm can evaluate and quantify computer's visualization performance, and calculate the precise triangle amount quickly, thus the rendering rate of terrain visualization system can be controlled accurately.