Volume 40 Issue 8
Aug.  2014
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Wang Jiangyun, Zeng Qiong, Wang Huixiaet al. Multi-resolution modeling of terrain based on wavelet analysis[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(8): 1121-1126. doi: 10.13700/j.bh.1001-5965.2013.0473(in Chinese)
Citation: Wang Jiangyun, Zeng Qiong, Wang Huixiaet al. Multi-resolution modeling of terrain based on wavelet analysis[J]. Journal of Beijing University of Aeronautics and Astronautics, 2014, 40(8): 1121-1126. doi: 10.13700/j.bh.1001-5965.2013.0473(in Chinese)

Multi-resolution modeling of terrain based on wavelet analysis

doi: 10.13700/j.bh.1001-5965.2013.0473
  • Received Date: 08 Aug 2013
  • Publish Date: 20 Aug 2014
  • Through wavelet analysis of signal, multi-resolution modeling of digital elevation model (DEM) for the purpose of improving operational efficiency and storage efficiency was studied. According to the characteristics of DEM, on the base of Mallat's multi-resolution analysis (MRA) algorithm, a method for multi-resolution modeling based on wavelet analysis was presented. Then the principles for choosing the fittest wavelet function and boundary extension mode were analyzed. Also a way and several corresponding indexes on evaluating the accuracy of modeling were given. Through simulations, the best wavelet transform parameters were found. Simulation results show that wavelet analysis can be an effective way to achieve DEM data's multi-resolution modeling while operational efficiency and storage efficiency can both be guaranteed. This method can be applied to various engineering such as terrain's quick visualization and aircraft's dynamic or static path planning.

     

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