Affiliation:
1. Capital Normal University
Abstract
Digital elevation model, the core data for 3-dimensinal visualization and spatial analysis, plays a key role in geosciences and GIS, and wavelet transform is an important tool for data compression. According to the characteristics of DEM data and wavelet transform, we proposed an approach to diminish boundary distortion in compressing grid DEM data with discrete wavelet transform, so that the compression performances are evidently improved. The experimental results indicate that not only higher compression ratios but also reconstructed DEM data with high accuracy are achieved by using the proposed approach.
Publisher
Trans Tech Publications, Ltd.
Reference6 articles.
1. Wan G, Zhu C. Application of multi-band wavelet on simplifying DEM with lose of feature information, Acta Geodaetica et Cartographica Sinica (1999) , pp.36-40.
2. Wu Lun, Liu Y 2001 Principle of geographic information system (Beijing: Beijing Science Press).
3. Boliek M, Christopoulos C and Majani E 2000 JPEG2000 Part I Final Draft International Standard ISO/IEC JEC1/SC29/WG1 N1855.
4. Chen R, Li X. DEM Compression Based on Integer Wavelet Transform Geo-spatial Information Science (2007), pp.133-36.
5. Mallat S G, Stephance G. A theory for multiresolution signal decomposition: the wavelet representation. IEEE Trans. Pattern Analysis and Machine Intelligent (1989), pp.674-93.
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献