Rocky Mountain Research Station Publications

RMRS Online Publication - Journal Articles, External Publications, and Special Reports
A comparison of two open source LiDAR surface classification algorighms


Tinkham, Wade T.; Huang, Hongyu; Smith, Alistair M.S.; Shrestha, Rupesh; Falkowski, Michael J.; Hudak, Andrew T.; Link, Timothy E.; Glenn, Nancy F.; Marks, Danny G. 2011. A comparison of two open source LiDAR surface classification algorighms. Remote Sensing. 3: 638-649.

With the progression of LiDAR (Light Detection and Ranging) towards a mainstream resource management tool, it has become necessary to understand how best to process and analyze the data. While most ground surface identification algorithms remain proprietary and have high purchase costs; a few are openly available, free to use, and are supported by published results. Two of the latter are the multiscale curvature classification and the Boise Center Aerospace Laboratory LiDAR (BCAL) algorithms. This study investigated the accuracy of these two algorithms (and a combination of the two) to create a digital terrain model from a raw LiDAR point cloud in a semi-arid landscape. Accuracy of each algorithm was assessed via comparison with >7,000 high precision survey points stratified across six different cover types. The overall performance of both algorithms differed by only 2%; however, within specific cover types significant differences were observed in accuracy. The results highlight the accuracy of both algorithms across a variety of vegetation types, and ultimately suggest specific scenarios where one approach may outperform the other. Each algorithm produced similar results except in the ceanothus and conifer cover types where BCAL produced lower errors.

Keywords: LiDAR, algorithm, filtering, DTM, MCC, BCAL


About PDFs: For best results, do not open the PDF in your Web browser. Right-click on the PDF link to download the PDF file directly to your computer. Click here for more PDF help.


Download Article
http://www.fs.fed.us/rm/pubs_other/rmrs_2011_tinkham_w001.pdf

PDF File Size: 380 K


Title: RMRS Other Publications: A comparison of two open source LiDAR surface classification algorighms
Electronic Publish Date: March 23, 2011
Last Update:
March 23, 2011

RMRS Publications | Order a publication | Contact Us