IntCDC Constructive Conversations –
Capturing and Processing Point Clouds: From 3D Geometry to Surface Properties

We are very honored to welcome Andreas Wieser – Full Professor at the Department of Civil, Environmental and Geomatics Engineering at the ETH Zürich – on Monday, June 26, 2023 from 4:00-6:00 p.m. in our upcoming Constructive Conversations event.

Andreas Wieser will give a lecture on "Capturing and Processing Point Clouds: From 3D Geometry to Surface Properties".

^{Image: Post-​fabrication scanning of 3D concrete printed columns using a terrestrial laser scanner in ETH Zurich’s Robotic Fabrication Laboratory}

The event will take place both in person and digitally:

^{Image: Experimental frequency comb laser unit for multispectral multimodal LiDAR}

Lecture Abstract

Breathtaking developments of sensors and highly-automated data processing pipelines have transformed point cloud technologies from tools for 3d mapping specialists into commodities for a vast breadth of application fields and for use by almost everybody. Capturing 3D reality seems simple, now. And in many cases, it is—particularly if the goal is a plausibly looking digital representation of the surfaces from a real world scene. If the data are instead needed for controlling a construction process, for assessing conformance, status or changes of a structure, if they need to be semantically interpreted, or if accuracies at the mm- to sub-mm-level are required, significant challenges arise. They refer to the instruments, the environment, the measurement processes and the data processing. 

In this presentation, I will give an overview about these challenges and research that helps to overcome them. I will focus on terrestrial laser scanning and on aspects relevant for deformation monitoring, for the comparison of planned and executed surfaces, and for extracting information beyond geometry, e.g. material, roughness, and humidity. I will cover approaches applicable using commercial of the shelve instruments, and I will present the status and potential benefits of a multispectral multimodal LiDAR system developed by my own research group.

Andreas Wieser

Andreas Wieser is engaged in the development of innovative measurement systems and analysis methods for highly accurate positioning, navigation, and continuous geodetic monitoring of buildings and natural objects. He is particularly interested in parameter estimation, rigorous quality control and simulation based optimization of measurement processes. He has been Professor of Geosensorics and Engineering Geodesy at the Institute of Geodesy and Photogrammetry, in the Department of Civil, Environmental and Geomatics Engineering, since 2012.

In 1995, Andreas Wieser graduated in Surveying from the Vienna University of Technology. He was then a doctoral student at TU Graz and obtained a PhD there in 2001 with a thesis on “Robust and fuzzy techniques for parameter estimation and quality assessment in GPS”. From 2003 to 2004 he worked as a postdoc at the University of Calgary, Canada. Then he was a teaching and research assistant at the Institute of Engineering Geodesy and Measurement Systems of TU Graz, Austria, where his habilitation thesis on “GPS based velocity estimation and its application to an odometer” was accepted in 2007.

After a brief period as Product Manager Electronic Tolling with Efkon AG, Graz, he became Professor in Engineering Geodesy at the Vienna University of Technology in 2009.

AdvanceAEC  – Join this and further AdvanceAEC Partner Seminars and receive an AdvanceAEC certificate!

This lecture is part of the AdvanceAEC partner seminar series. In 2023 eight partner seminars will take place. Partner seminars are focused on cross-sectional and interdisciplinary topics and are open to all network partners. If you attend at least six of the eight seminars, you will receive a certificate of time attended. You must register for this at the beginning of each event. The procedure for this will be briefly explained before each seminar.

The access data for this event is available to AdvanceAEC members. All researchers working in the field of AdvanceAEC are warmly invited to join the network. Please register or log-in to your account to access the event credentials.