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Analysis of geometric primitives in quantitative structure models of tree stems

Research output: Contribution to journalArticleScientificpeer-review

Details

Original languageEnglish
Pages (from-to)4581-4603
Number of pages23
JournalRemote Sensing
Volume7
Issue number4
DOIs
Publication statusPublished - 2015
Publication typeA1 Journal article-refereed

Abstract

One way to model a tree is to use a collection of geometric primitives to represent the surface and topology of the stem and branches of a tree. The circular cylinder is often used as the geometric primitive, but it is not the only possible choice. We investigate various geometric primitives and modelling schemes, discuss their properties and give practical estimates for expected modelling errors associated with the primitives. We find that the circular cylinder is the most robust primitive in the sense of a well-bounded volumetric modelling error, even with noise and gaps in the data. Its use does not cause errors significantly larger than those with more complex primitives, while the latter are much more sensitive to data quality. However, in some cases, a hybrid approach with more complex primitives for the stem is useful.

ASJC Scopus subject areas

Keywords

  • Biomass estimation, Error analysis, Shape fitting, Terrestrial laser scanning, Tree modelling

Publication forum classification

Field of science, Statistics Finland