(Article of periodic en Anglais - 2012)

Document title

Accuracy of automatically extracted geomorphological breaklines from airborne LiDAR curvarure images

published at : Concepts and implications of environmental change and human impact : studies from Austrian geomorphological research

Authors(s) and Affiliation(s)

RUTZINGER M. (1 2) ; HÖFLE B. (3) ; KRINGER K. (1) ;
(1) Inst. of Geography, Univ., Innsbruck, AUTRICHE
(2) Inst. of Mountain Research : Man and Environment, Austrian Academy of Sciences, Innsbruck, AUTRICHE
(3) Inst. of Geography, Chair of GIScience, Univ., Heidelberg, ALLEMAGNE


The AA. investigate on the quality of breaklines derived from digital terrain models (DTMs) acquired with airborne laser scanning (ALS) in regions with high curvature. The test site is located in the Wipptal south of Innsbruck and is part of the terraces formed during and after the last glaciation. Selected components of the breakline detection workflow are analysed. In addition, the reliability of manually digitized reference lines is investigated. Selected geometric properties such as line length, slope and sinuosity are computed and compared to reference data. The properties are discussed regarding their explanatory power with respect to accuracy and precision. Automatic extraction results strongly differ from manually digitized breaklines. Breaklines from manual digitalization are found to vary in coverage and spatial accuracy and thus reflect always the operator's ability, perception and intention. The advantage of automated extracted breaklines is their reproducibility and adaptability to scale


Thematical fascicle

published at : Geografiska annaler. Series A. Physical geography / ISSN 0435-3676 / CODEN GAPGAP

Editor : Svenska sällskapet för antropologi och geografi, Stockholm - SUEDE (1965)

Millesime : 2012, vol. 94, no 1 [pp. 33-42]

Bibliographic references : 20 ref.

Collation : fig., tab.




Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1111/j.1468-0459.2012.00453.x

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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