TY  - JOUR
A1  - Müller, Karsten
A1  - Billmaier, Karl
A1  - Müller, Ernst A.
T1  - Abwasserwärmenutzung
JF  - Wasserwirtschaft, Wassertechnik : wwt. 2013, H. 5
Y1  - 2013
SN  - 1438-5716
SP  - 24
EP  - 26
PB  - Deutscher Fachverlag
CY  - Frankfurt am Main
ER  - 
TY  - JOUR
A1  - Kirstein, Simon
A1  - Müller, Karsten
A1  - Walecki-Mingers, Mark
A1  - Deserno, Thomas M.
T1  - Robust adaptive flow line detection in sewer pipes
JF  - Automation in construction
N2  - As part of a novel approach to automatic sewer inspection, this paper presents a robust algorithm for automatic flow line detection. A large image repository is obtained from about 50,000 m sewers to represent the high variability of real world sewer systems. Automatic image processing combines Canny edge detection, Hough transform for straight lines and cost minimization using Dijkstra's shortest path algorithm. Assuming that flow lines are mostly smoothly connected horizontal structures, piecewise flow line delineation is reduced to a process of selecting adjacent line candidates. Costs are derived from the gap between adjacent candidates and their reliability. A single parameter α enables simple control of the algorithm. The detected flow line may precisely follow the segmented edges (α = 0.0) or minimize gaps at joints (α = 1.0). Both, manual and ground truth-based analysis indicate that α = 0.8 is optimal and independent of the sewer's material. The algorithm forms an essential step to further automation of sewer inspection.
Y1  - 2012
U6  - http://dx.doi.org/10.1016/j.autcon.2011.05.009
SN  - 1872-7891 (E-Journal) ; 0926-5805 (Print)
IS  - 21
SP  - 24
EP  - 31
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - CHAP
A1  - Ganegedara, H.
A1  - Alahakoon, D.
A1  - Mashford, J.
A1  - Paplinski, A.
A1  - Müller, Karsten
A1  - Deserno, T. M.
T1  - Self organising map based region of interest labelling for automated defect identification in large sewer pipe image collections
T2  - The 2012 International Joint Conference on Neural Networks (IJCNN) : 10 - 15 June 2012, Brisbane, Australia ; [part of the] 2012 IEEE World Congress on Computational Intelligence (IEEE-WCCI 2012)
Y1  - 2012
SN  - 978-1-4673-1490-9
PB  - IEEE
CY  - Piscataway, NJ
ER  - 
TY  - CHAP
A1  - Siekmann, Thomas
A1  - Müller, Karsten
T1  - Adaptive potential of the stormwater management in urban areas faced by the climate change
T2  - 12th International Conference on Urban Drainage, Porto Alegre/Brazil, 11-16 September 2011
Y1  - 2011
ER  - 
TY  - JOUR
A1  - Siekmann, Thomas
A1  - Müller, Karsten
T1  - Anpassungspotenziale der konventionellen Regenwasserbehandlung im Mischsystem an Auswirkungen des Klimawandels
JF  - Energie-, Wasser-Praxis : Fachzeitschrift für die Energie- und Wasser-Praxis. Bd. 62 (2011), Spezial LESAM 2011
Y1  - 2011
SN  - 1436-6134
SP  - 48
EP  - 51
PB  - DVGW
CY  - Bonn
ER  - 
TY  - BOOK
A1  - Müller, Karsten
T1  - Bedarfsorientierte Instandhaltung von Kanalisationen
Y1  - 2010
SN  - 978-3-8167-8060-1
PB  - IRB Verl.
CY  - Stuttgart
ER  - 
TY  - CHAP
A1  - Risse, Henry
A1  - Bolle, Friedrich-Wilhelm
A1  - Müller, Karsten
T1  - Energiebilanzen und -potenziale von Abwasseranlagen : Vorstellung neuer Untersuchungsvorhaben in NRW
T2  - 11. Kölner Kanal- und Kläranlagen-Kolloquium am 29. und 30. Sept. 2010. Aachener Schriften zur Stadtentwässerung ASS. Bd. 14
Y1  - 2010
SN  - 978-3-938996-07-2
SP  - 27/1
EP  - 27/16
PB  - Ges. zur Förderung der Siedlungswasserwirtschaft an der RWTH Aachen
CY  - Aachen
ER  - 
TY  - CHAP
A1  - Müller, Karsten
A1  - Lorenz, U.
T1  - Neue Entwicklungen in der Abwasserwärmenutzung : Ergebnisse einer Potenzialstudie für das Kanalnetz der Stadt Aachen
T2  - 42. Essener Tagung für Wasser- und Abfallwirtschaft : vom 18.3. - 20.3. 2009 im Eurogress Aachen / hrsg. von Johannes Pinnekamp. Gewässerschutz - Wasser - Abwasser. Bd. 217
Y1  - 2009
SN  - 978-3-938996-23-2
SP  - 40/1
EP  - 40/14
PB  - Ges. zur Förderung der Siedlungswasserwirtschaft an der RWTH Aachen
CY  - Aachen
ER  - 
TY  - CHAP
A1  - Müller, Karsten
A1  - Fischer, B.
T1  - Objective condition assessment of sewer systems
T2  - Strategic asset management of water supply and wastewater infrastructures : invited papers from the 2nd IWA Leading Edge Conference on Strategic Asset Management (LESAM), Lisbon, October [17 - 19] 2007 / ed. by Helene Alegre and Maria do Céu Almeida
Y1  - 2009
SN  - 9781843391869
SP  - 521
EP  - 534
PB  - IWA Publ.
CY  - London
ER  - 
TY  - CHAP
A1  - Müller, Karsten
A1  - Hüben, Susanne
T1  - From rehabilitation strategy up to formation of lots : implementation of a computer-aided decision support system
T2  - 11th International Conference on Urban Drainage, Edinburgh, Scotland, UK, 31st August to 5th September 2008
Y1  - 2008
ER  -