Sentence examples for tree delineation from inspiring English sources

Fig. 4 Evaluation of the accuracy of tree delineation by itcsegment; the number of trees observed in the field in four height classes are compared with numbers delineated from the ALS point cloud.

As direct estimation of stand density from LiDAR cloud metrics is typically only moderately precise, the use of individual tree delineation may provide the most accurate method for deriving a stand density map.

In order to eliminate such over-segmentation, a new method for individual tree crown delineation from optical imagery was proposed based on multi-scale filtering and segmentation in this study.

This paper describes the tree identification and delineation algorithm (TIDA), an image analysis tool designed to delineate tree crowns automatically in high spatial resolution digital imagery.

Automated tree detection and delineation algorithms may be an effective means to accomplish this task.

Variables related to the crown structure and height of individual trees were extracted from the normalized LiDAR point cloud at individual-tree level, after performing individual tree crown (ITC) delineation.

Whereas the corresponding phylogenetic tree supported the delineation of clades A and B but revealed a large number of clades among our sequences from the Pacific Ocean, haploweb analysis showed that these various Pacific Ocean clades are actually conspecific (since many heterozygous individuals harbor sequences from two different clades).

An accuracy of 83% was achieved in the delineation of tree crowns, as observed through the relationship determined between the number of segmented and observed tree crowns (Additional file 1: Appendix S5).

In mixed-species forests of complex structure, the delineation of tree crowns is problematic because of their varying dimensions and reflectance characteristics, the existence of several layers of canopy (including understorey), and shadowing within and between crowns.

It includes the microscopically fine delineation of trees and a placid stream by the Hudson River School painter Jasper Cropsey; the jerky, primitivistic charcoal lines of a nude by Charles Cajori; the pale, feathery hatching in a still-life by William Bailey; the graphically definitive sketches of people, dogs and cakes from Wayne Thiebaud's notebooks; and much more.

Delineation of individual tree crowns was performed using the itcSegmentR package described in Dalponte and Coomes (2016), Coomes et al. (2017) and available through CRAN, which is an adaptation of the approach originally developed by Hyyppä et al. (2001).