Anti-aliasing filters for deriving high-accuracy DEMs from TLS data: A case study from Freeport, Texas

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• 作者：Lin. Xiong^a ; ^{lxiong2@uh.edu} ; Guoquan Wang^a ; ^gwang@uh.edu ; Paul Wessel^b ; ^{pwessel@hawaii.edu}
• 关键词：Anti-aliasing ; DEM ; Downsampling ; LiDAR ; Regridding ; TLS
• 刊名：Computers & Geosciences
• 出版年：2017
• 出版时间：March 2017
• 年：2017
• 卷：100
• 期：Complete
• 页码：125-134
• 全文大小：1863 K
• 卷排序：100

文摘

An anti-aliasing method for using TLS data has been introduced. A fourth-order Butterworth low-pass spatial filter is applied. The cutoff wavelength is three times the grid size of the target DEM.