Assessing Handheld Mobile Laser Scanners for Forest Surveys

Remote Sensing

Joseph Ryding¹  Martin J. Smith¹  Emily Williams²  Markus P. Eichhorn³ 

[1] Faculty of Engineering, The University of Nottingham, Nottingham NG7 2RD, UK;Laser Mapping, Unit 1 Moorbridge Court, Bingham NG13 8GG, UK;School of Life Sciences, The University of Nottingham, Nottingham NG7 2RD, UK;

关键词: forest;    laser scanning;    handheld mobile laser scanning;    forest inventory;   

DOI  :  10.3390/rs70101095

来源: DOAJ

【 摘 要 】

A handheld mobile laser scanning (HMLS) approach to forest inventory surveying allows virtual reconstructions of forest stands and extraction of key structural parameters from beneath the canopy, significantly reducing survey time when compared against static laser scan and fieldwork methods. A proof of concept test application demonstrated the ability of this technique to successfully extract diameter at breast height (DBH) and stem position compared against a concurrent terrestrial laser scan (TLS) survey. When stems with DBH > 10 cm are examined, an HMLS to TLS modelling success rate of 91% was achieved with the root mean square error (RMSE) of the DBH and stem position being 1.5 cm and 2.1 cm respectively. The HMLS approach gave a survey coverage time per surveyor of 50 m2/min compared with 0.85 m2/min for the TLS instrument and 0.43 m2/min for the field study. This powerful tool has potential applications in forest surveying by providing much larger data sets at reduced operational costs to current survey methods. HMLS provides an efficient, cost effective, versatile forest surveying technique, which can be conducted as easily as walking through a plot, allowing much more detailed, spatially extensive survey data to be collected.

【 授权许可】

Unknown