Comparison of selected splines for stem form modeling: A case study in Norway spruce

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41320%2F14%3A64996" target="_blank" >RIV/60460709:41320/14:64996 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Comparison of selected splines for stem form modeling: A case study in Norway spruce

Popis výsledku v původním jazyce

Natural cubic spline has been frequently used to represent stem forms, with other spline types rarely involved. Splines are a large class of functions and there are many other spline types which might serve that purpose. In this paper several different spline types, both interpolation and approximation, were investigated and splines more suitable for stem form representation than natural cubic spline are proposed. Their abilities to model the stem curve using different numbers of input points were compared using data of 85 carefully measured Norway spruce (Picea abies [L.] Karst.) stems. When modeling the whole stem profile all interpolation curves with second degree continuity suffer from oscillations. Approximation splines give satisfactory overall estimations, but they overestimate the lower stem and overestimate the upper stem. The best results were obtained with interpolation curves with first degree continuity. Stem curves were best described by the Catmull-Rom spline. Previously

Název v anglickém jazyce

Comparison of selected splines for stem form modeling: A case study in Norway spruce

Popis výsledku anglicky

Natural cubic spline has been frequently used to represent stem forms, with other spline types rarely involved. Splines are a large class of functions and there are many other spline types which might serve that purpose. In this paper several different spline types, both interpolation and approximation, were investigated and splines more suitable for stem form representation than natural cubic spline are proposed. Their abilities to model the stem curve using different numbers of input points were compared using data of 85 carefully measured Norway spruce (Picea abies [L.] Karst.) stems. When modeling the whole stem profile all interpolation curves with second degree continuity suffer from oscillations. Approximation splines give satisfactory overall estimations, but they overestimate the lower stem and overestimate the upper stem. The best results were obtained with interpolation curves with first degree continuity. Stem curves were best described by the Catmull-Rom spline. Previously

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

GK - Lesnictví

OECD FORD obor

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Projekt

<a href="/cs/project/QI102A079" target="_blank" >QI102A079: Výzkum biomasy listnatých dřevin</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Annals of Forest Research

ISSN

1844-8135

e-ISSN

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Svazek periodika

57

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

12

Strana od-do

137-148

Kód UT WoS článku

000340352300013

EID výsledku v databázi Scopus

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