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http://dx.doi.org/10.14372/IEMEK.2015.10.2.73

Dynamic Culling Scheme Based on Altitude for Real-Time Rendering System  

Lee, Chungjae (Gyeongsang National University, Engineering Research Institute)
Kang, Seokyoon (Gyeongsang National University, Engineering Research Institute)
Kim, Ki Il (Gyeongsang National University, Engineering Research Institute)
Publication Information
IEMEK Journal of Embedded Systems and Applications / v.10, no.2, 2015 , pp. 73-79 More about this Journal
Abstract
Dynamic culling scheme is usually implemented to handle overhead caused by rendering the massive large-scale terrain data in flight simulator. However, existing culling scheme without considering altitude is not suitable for flight simulator due to additional computational overhead. To solve this problem, in this paper, we propose hybrid approach by applying two dynamic culling schemes depending on altitude. In addition, we remove unnessary computational overhead by creating different z-map resolution when aircraft changes its altitude. The proposed scheme is implemented with open graphic library and tested with real terrain data. Through the experimental results, we can recognize the improved rendering speed about 8 to 73 percents as compared to existing scheme.
Keywords
Culling; Flight simulation; Open scene graph;
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