984 resultados para Faux Terrain
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"Army model MHE 200, NSN 3930-00-903-0900, Anthoney model MLT-6, NSN 3930-01-054-3831, Anthoney model MLT-6 with ROPS and Army model MHE 202, NSN 3930-00-937-0220, Chrysler model MLT-6CH, NSN 3930-01-053-4823, Chrysler model MLT-6CH with ROPS and Army model MHE 222, NSN 3930-00-419-5744, Athey model ARTFT-6, NSN 3930-01-054-3830, Athey model ART FT-6 with ROPS."
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"June 1971."
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"June 1971."
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"November 1982."
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Mode of access: Internet.
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Mode of access: Internet.
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"Presented at Joint session of AAAS Section E and Geological Society of America Symposium on Quantitative Terrain Studies, Section E, Chicago, Illinois, December 28, 1959."
Terrain classification based on markov random field texture modeling of SAR and SAR coherency images
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Multiresolution Triangular Mesh (MTM) models are widely used to improve the performance of large terrain visualization by replacing the original model with a simplified one. MTM models, which consist of both original and simplified data, are commonly stored in spatial database systems due to their size. The relatively slow access speed of disks makes data retrieval the bottleneck of such terrain visualization systems. Existing spatial access methods proposed to address this problem rely on main-memory MTM models, which leads to significant overhead during query processing. In this paper, we approach the problem from a new perspective and propose a novel MTM called direct mesh that is designed specifically for secondary storage. It supports available indexing methods natively and requires no modification to MTM structure. Experiment results, which are based on two real-world data sets, show an average performance improvement of 5-10 times over the existing methods.