TechNotes: Influence of ULS Acquisition Characteristics on Tree Stem Parameter Estimation

Reconstructed tree stems from miniVUX (dark brown) and TLS (light brown) within the study area.

Science Direct recently published a scientific journal authored by Moritz Bruggisser, Markus Hollaus, Johannes Otepka and Norbert Pfeifer. The journal goes into technical detail about how LiDAR can automatically detect the positions of tree trunks.

Experts have been doing extensive research in order to determine corresponding diameter at breast height (DBH) for assessing the shape of tree trunks from 3D point clouds from unmanned aerial laser scanning (ULS). The projects are carried out with point clouds from a RIEGL miniVUX-1DL and the RIEGL VUX-1UAV. The results of these projects indicate that “the autonomous stem detection recognizes 91.0% and 77.6% of the stems, respectively, and that the DBH can be modeled with biases of 2.86 cm and 0.95 cm for 80.6% and 61.2% of the trees, when compared to field measurements.”

The findings of the study will be able to further assist in evaluating the potential ULS has for forest monitoring and management. This will allow for future conclusions regarding the required point cloud data, which fulfill the requirements for operational applications in forest inventories.

Please click the link below for the full technical article.

Influence of ULS Acquisition Characteristics on Tree Stem Parameter Estimation

About RIEGL:

RIEGL is an international leading provider of cutting-edge technology in airborne, mobile, terrestrial, industrial and unmanned laser scanning solutions.

RIEGL has been producing LiDAR systems commercially and focuses on pulsed time-of-flight laser radar technology in multiple wavelengths.

RIEGL’score technology, the digitization of LiDAR signals (“Waveform LiDAR”), provides unique methodologies for resolving range ambiguities, multiple targets per laser shots, optimum distribution of measurements, calibrated amplitudes and reflectance estimates, as well as the seamless integration and calibration of systems.

RIEGL’sUltimate LiDARTM 3D scanners offer a wide array of performance characteristics and serve as a platform for continuing Innovation in 3D for the LiDAR industry.

From the first inquiry, to purchase and integration of the system, as well as training and support, RIEGL maintains an outstanding history of reliability and support to their customers.

Worldwide sales, training, support and services are delivered from RIEGL’s headquarters in Austria; main offices in the USA, Japan, China, Australia and Canada; and a worldwide network of representatives.

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