Digital Terrain Modeling generalization with base in Wavelet Transform

作者：Gaboardi Clovis^*; Mitishita Edson Aparecido; Firkowski Henrique

来源：Boletim de Ciencias Geodesicas, 2011, 17(1): 115-129.

• Digital Terrain Modeling
• Generalization, Wavelets Transform
• Lidar
• Laser Scanner System

The laser scanner systems have been used to obtain digital terrain models with high resolution and accuracy. For many applications, the original large amount of laser scanner data can be reduced by generalization process to produce different types of resolutions. This work aims at studying the behavior of the wavelet transform for digital terrain models generalization in form of regular grids, obtained from laser scanner data. The transformed wavelet were implemented in Mat lab language programs. Haar, Daubechies and Symlet wavelets were used. The kriging generalization was used for the comparison of the results. The experiments showed that the wavelet transform can be used as an alternative for generalization of DTM due to the implementation facility, low computational cost, high processing speed and accuracy compatible with the resolution obtained in the generalized DTM, and for being a natural method for multiresolution analysis.

• 出版日期2011-3
• 单位南方医科大学