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Characterisation of discontinuities in laser scanner profiles

Schill, Florian and Eichhorn, Andreas (2018):
Characterisation of discontinuities in laser scanner profiles.
In: Mobile Laser Scanning | Technology Workshop, In: MoLaS 2018, Freiburg, 14.11.-15.11.2018, [Online-Edition: https://www.molas.fraunhofer.de/],
[Conference or Workshop Item]

Abstract

For most applications in the laser scanning sector the importance of the processing and analysis of the measured data is increasing rapidly. As a rule, the relevant information must be extracted as efficiently as possible from enormous amounts of data. Since the main part of the measuring information (that is actually of interest) is often concentrated in a few discontinuities (such as edges, peaks, etc.), an algorithm based on the wavelet transform was realized, which enables an automatic identification and characterization of discontinuities in measuring profiles.

This so-called multi scale analysis has the potential to adapt to the respective surface geometry and enables therefore the localization of isolated discontinuities due to a space frequency representation of the measuring profiles. In the next step the identified discontinuities are analyzed after their characteristics (within a regression analysis). Thus, in addition to the localization (position), the type (jump or peak), the direction (sign), the magnitude of the abrupt level change (height) as well as the number of measuring points involved (width) can be characterized.

in measuring profiles.

Item Type: Conference or Workshop Item
Erschienen: 2018
Creators: Schill, Florian and Eichhorn, Andreas
Title: Characterisation of discontinuities in laser scanner profiles
Language: German
Abstract:

For most applications in the laser scanning sector the importance of the processing and analysis of the measured data is increasing rapidly. As a rule, the relevant information must be extracted as efficiently as possible from enormous amounts of data. Since the main part of the measuring information (that is actually of interest) is often concentrated in a few discontinuities (such as edges, peaks, etc.), an algorithm based on the wavelet transform was realized, which enables an automatic identification and characterization of discontinuities in measuring profiles.

This so-called multi scale analysis has the potential to adapt to the respective surface geometry and enables therefore the localization of isolated discontinuities due to a space frequency representation of the measuring profiles. In the next step the identified discontinuities are analyzed after their characteristics (within a regression analysis). Thus, in addition to the localization (position), the type (jump or peak), the direction (sign), the magnitude of the abrupt level change (height) as well as the number of measuring points involved (width) can be characterized.

in measuring profiles.

Title of Book: Mobile Laser Scanning | Technology Workshop
Divisions: 13 Department of Civil and Environmental Engineering Sciences
13 Department of Civil and Environmental Engineering Sciences > Institute of Geodesy
13 Department of Civil and Environmental Engineering Sciences > Institute of Geodesy > Geodetic Measuring Systems and Sensor Technology
Event Title: MoLaS 2018
Event Location: Freiburg
Event Dates: 14.11.-15.11.2018
Date Deposited: 21 Dec 2018 09:53
Official URL: https://www.molas.fraunhofer.de/
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