Profilbild
Prof. Dr.-Ing. Ahmad Osman
Sensorsysteme zur intelligenten Datenerfassung und fortgeschrittenen Datenauswertung

Funktion

  • Professor für das Lehrgebiet Prüftechnologien und Prüfverfahren, insbesondere für Automatisierte Signal- und Bildverarbeitung von Sensordaten
  • Leiter der Forschungsgruppe AutomaTiQ
  • Themenkoordinator Bildverarbeitung, Algorithmik und Datenverarbeitung am Fraunhofer IZFP

Forschungs-und Entwicklungsaktivitäten

  • Anwendung von Maschinelles Lernen/Mustererkennungsverfahren für Themen und Fragestellungen der Industrie
  • Signal-und Bildverarbeitung: Akustische Signatur Analyse, Defekterkennung, Objekterkennung usw.
  • Sensordatenfusion: Evidence Theory
  • Rekonstruktionsverfahren: 3D-Ultraschall Tomographie
  • Zerstörungsfreie Messverfahren: Ultraschall und Röntgen Verfahren
  • Qualitätskontrolle und Zustandsüberwachung: in-line und online Datenauswertung mittels künstlicher Intelligenz Techniken
  • Fahrerassistenzsysteme: Algorithmen für Signal- und Videobasierte Fahrerassistenzfunktionen

Vorlesungen

Sprechstunde

      • nach Vereinbarung

Links

Publikationen und Konferenzbeiträge

      • 2018:
        • H. Zhang, S. Sfarra, A. Osman, K. Szielasko, C. Stumm, M. Genest, X. P.V. Maldague. "An Infrared-Induced Terahertz Imaging Modality for Foreign Object Detection in a Lightweight Honeycomb Composite Structure". In IEEE Transactions on Industrial Informatics, vol. 14, no. 12, pp. 5629-5636, Dec. 2018.

        • H. Zhang, S. Sfarra, A. Osman, C. Szielasko, C. Stumm, F. Sarasini, C. Santulli, X. P.V. Maldague. "Terahertz Amplitude Polynomial Principle Component Regression for Aramid–Basalt Hybrid Composite Laminate Inspection". In IEEE Transactions on Industrial Informatics, vol. 14, no. 12, pp. 5601-5609, Dec. 2018.

        • Hai Zhang, Stefano Sfarra; Ahmad Osman, Fabrizio Sarasini, Udo Netzelmann, Bernd Valeske; Clemente Ibarra Castanedo and Xavier Maldague. "Non-destructive evaluation of low-velocity impact-induced damage in basalt-carbon hybrid composite laminates using eddy current pulsed thermography". Optical Engineering Journal, Volume 58, doi: 10.1117/1.OE.58.4.041602, 27 October 2018.

        • Fabian Krieg, Rick Pandey, Jan Kirchhof, Alexander Ihlow, Florian Römer, Giovanni Del Galdo, Ahmad Osman. "Progressive online 3-D SAFT processing by matrix structure Exploitation". In Proceedings of the 2018 IEEE International Ultrasonics Symposium, October 2018, Kobe, Japan.

        • Fabian Krieg, Sergey Lugin, Jan Kirchhof, Alexander Ihlow, Thomas Schwender, Giovanni del Galdo, Florian Römer, Ahmad Osman. "SAFT processing for manually acquired ultrasonic measurement data with 3D Smart Inspect". International Symposium on Structural Health Monitoring and Nondestructive Testing, 4-5 October 2018, Saarbrücken, Germany.

        • Philipp Groß, Alexander Ihlow, René Böttcher, Steffen Bessert, Fabian Krieg, Jan Kirchhof, Florian Römer, Ahmad Osman and Giovanni Del Galdo. "Design and prototyping of a 3-D positioner for ultrasound quality control measurements“. International Symposium on Structural Health Monitoring and Nondestructive Testing, 4-5 October 2018, Saarbrücken, Germany.

        • Bo Zhang, Ziang Wei, Ahmad Osman, Xiaodan Zhang, Baojun Zhang, Guixi Cai, Xiaohui Han, Qingxiang Zhou, Yang Zhao. "An ultrasonic non-destructive testing method for evaluating resistance spot welding quality“. International Symposium on Structural Health Monitoring and Nondestructive Testing, 04-05 October 2018, Saarbrücken, Germany.

        • Sebastian Semper, Jan Kirchhof, Christoph Wagner, Fabian Krieg, Florian Römer, Ahmad Osman, Giovanni Del Galdo. "Defect Detection from 3D Ultrasonic Measurements using Matrix-free Sparse Recovery Algorithms". In Proceedings of the  26th European Signal Processing Conference (EUSIPCO), September 2018, Rome, Italy.

        • H. Zhang, S. Sfarra, A. Osman, K. Szielasko, C. Stumm, F. Sarasini, X. Maldague. "Infrared and Terahertz time-domain imaging for evaluation of impacted thick homogeneous particleboards of sugarcane bagasse". Proceedings of the 14th Quantitative InfraRed Thermography Conference, 25 – 29 June 2018 in Berlin, Germany.

        • Hai Zhang, Stefano Sfarra, Ahmad Osman, Klaus Szielasko, Christopher Stumm, Marc Genest, Xavier Maldague. "An Infrared-Induced Terahertz Imaging Modality for Foreign Insert Detection in A Glass Fiber-Skinned Lightweight Honeycomb Composite Panel". IEEE Transactions on Industrial Informatics, DOI: 10.1109/TII.2018.2832244, May 2018.

        • Fabian Krieg, Jan Kirchhof, Florian Römer, Alexander Ihlow, Giovanni del Galdo und Ahmad Osman. "Vergleich und Anpassung von 3D-SAFT-Implementierungen im Zeit- und Frequenzbereich für die schnelle Grobblechprüfung". Deutsche Gesellschaft für Zerstörungsfreie Prüfung, Jahrestagung 2018, 7.– 9. Mai 2018, Leipzig, Deutschland.

        • Hai Zhang, Stefano Sfarra, Ahmad Osman, Fabrizio Sarasini, Udo Netzelmann, Stefano Perilli, Clemente Ibarra-Castanedo, and Xavier P. V. Maldague. "Eddy current pulsed thermography for ballistic impact evaluation in basalt-carbon hybrid composite panels". Applied Optics 57, D74-D81 (2018)

        • Zhang, Hai; Avdelidis, Nicolas P.; Osman, Ahmad; Ibarra-Castanedo, Clemente; Sfarra, Stefano; Fernandes, Henrique; Matikas, Theodore E.; Maldague, Xavier P.V. 2018. "Enhanced Infrared Image Processing for Impacted Carbon/Glass Fiber-Reinforced Composite Evaluation". Sensors 18, no. 1: 45.

        • Hai Zhang, Stefano Sfarra, Ahmad Osman, Fabrizio Sarasin, Bernd Valeske, Udo Netzelmann, Nicolas P. Avdelidisa, Clemente Ibarra-Castanedo and Xavier Maldague. "Nondestructive evaluation using eddy current pulsed thermographic imaging of basalt-carbon hybrid fiber-reinforced composite laminates subjected to low-velocity impact loadings". SPIE Smart Structures & Nondestructive Evaluation, 4-8 March 2018, Denver, Colorado, USA.

      • 2017:
        • Valerie Kaftandjian, Ahmad Osman. "Using features extraction and data fusion to enhance NDT reliability of inspection". In Proceedings of Conference and Exhibition on Non-Destructive Evaluation, 14-16 December 2017, Chennai, India.

        • Ahmad Osman, Valerie Kaftandjian. "Characterization of speckle noise in three dimensional ultrasound data of material components". AIMS Materials Science, 2017, 4(4): 920-938. doi: 10.3934/matersci.2017.4.920.

        • Hai Zhang, Clemente Ibarra-Castanedo, Xavier Maldague, Stefano Sfarra, Ahmad Osman, Panagiotis Theodorakeas, Nicolas P. Avdelidis, Maria Koui. "Non-destructive investigation of paintings on canvas by infrared thermography, air-coupled ultrasound and x-ray radiography". In Proceedings of the 10th International Symposium on the Conservation of Monuments in the Mediterranean Basin (MONUBASIN), 20-22 of September 2017, Athens, Greece.

        • Hai Zhang, Stefano Sfarra, Ahmad Osman, Udo Netzelmann, Clemente Ibarra-Castanedo, Stefano Perilli, Fabrizio Sarasini, Xavier Maldague. "Eddy Current Pulsed Thermography for Basalt-Carbon Hybrid Composites Subjected to Ballistic Impacts: A Numerical and Experimental Study". In Proceedings of the14th International Workshop on Advanced Infrared Technology and Applications, AITA 2017, 27-29 September 2017, Quebec, Canada.

        • Fabian Krieg, Jan Kirchhof, Florian Römer, Alexander Ihlow, Christian Grandinetti, Giovanni Del Galdo, Ahmad Osman. "Implementation Issues of 3D SAFT in Time and Frequency Domain for the Fast Inspection of Heavy Plates". In Proceedings of the 2017 IEEE International Ultrasonics Symposium, September 2017, Washington, D.C., USA.

        • Yun Zheng, Matthias Heinrich, Ahmad Osman, Bernd Valeske. "Automated Detection of Geometric Defects on Connecting Rod via Acoustic Resonance Testing“. In the 25th European Signal Processing Conference (EUSIPCO), 28 August to 2 September, 2017, Kos, Greece.

        • Hai Zhang, Stefano Sfarra, Ahmad Osman, Marc Genest, Klaus Szielasko, Clemente Ibarra-Castanedo, Xavier P.V. Maldague. "Nondestructive investigation of lightweight composite panels using ultrasound, infrared and terahertz spectroscopy". In the 19th International Conference on Photoacoustic and Phototermal Phenomena, 16-20 July, 2017, Bilbao, Spain.

        • Michael Kirjanov, Philipp Grzyb, Jörg Hoffmann, Ahmad Osman. "Advanced Driver Assistance Systems for Motorcycles: Concept of a Lane Change Assist". In the 25th International Technical Conference on the Enhanced Safety of Vehicles (ESV), 5-8 June, 2017, Detroit, USA.

        • Jan Kirchhof, Fabian Krieg, Florian Römer, Alexander Ihlow, Ahmad Osman, and Giovanni Del Galdo. "3D-SAFT auf vorverarbeiteten Ultraschallsignalen - schneller messen bei verbesserter Auflösung". In Jahrestagung der Deutschen Gesellschaft für Zerstörungefreie Prüfung (DGZfP), Mai 2017, Koblenz, Deutschland.

        • Jan Kirchhof, Fabian Krieg, Florian Römer, Alexander Ihlow, Ahmad Osman, and Giovanni Del Galdo. "Sparse Signal Recovery for Ultrasonic Detection and Reconstruction of Shadowed Flaws". In Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2017), New Orleans, USA.

        • Prof. Dr. Ahmad Osman: Referent Vortrag über "Qualitätskontrolle mittels Ultraschalltomografie". 64. Heidelberger Bildverarbeitungsforum, 7 März 2017, Fürth, Deutschland.

      • 2016:
        • Jan Kirchhof, Fabian Krieg, Florian Römer, Alexander Ihlow, Ahmad Osman, Giovanni del Galdo. "Speeding up SAFT 3D processing by greedy sparse deconvolution". IEEE International Ultrasonics Symposium, 18-21 September 2016, Tours, France.

      • 2015:
        • Ahmad Osman, Ulf Hassler, Valerie Kaftandjian, Joachim Hornegger. "Automated segmentation of ultrasonic volumetric data of composite materials". Insight - Non-Destructive Testing and Condition Monitoring, Volume 57, Number 3, March 2015, pp. 153-160(8).

      • 2014:
        • Konstantinos Tigkos, Kristina Bliznakova, Aris Dermitzakis, Nicolas Ducros, Ulf Hassler, Zacharias Kamarianakis, Ahmad Osman , Veronique Rebuffel, Mattieu Tartare. "Simulation study for optimization of X-ray inspection setup applied to CFRP aerostructures". International Conference on Industrial Computed Tomography (ICT) at the University of Applied Sciences in Wels in Upper Austria, 25-28 February 2014, Wels, Autria.

        • Ahmad Osman, Valerie Kaftandjian, Ulf Hassler. "Amélioration de la fiabilité d'inspection en CND grâce à la fusion d'information: applications en rayons X et ultrasons". Les Journées Cofrend 2014.

        • Ahmad Osman, Valerie Kaftandjian, Ulf Hassler. "Application of belief functions theory to non destructive testing of industrial pieces". In book: Belief Functions: Theory and Applications, pp.209-218. Online ISBN: 978-3-319-11191-9.

      • 2013:
        • Ahmad Osman. "Automated Evaluation of Three Dimensional Ultrasonic Datasets". PhD thesis, Technical Faculty of the Friedrich-Alexander-University of Erlangen-Nuremberg, INSA-Lyon, ISBN-13: 978-3838137599, June 2013.

        • Yuxia Duan, Stefanie Huebner, Ulf Hassler, Ahmad Osman, Clemente Ibarra-Castanedo , Xavier Maldague. "Quantitative evaluation of optical lock-in and pulsed thermography for aluminum foam material". Infrared Physics & Technology 60, pp. 275-280, 2013.

        • Ulf Hassler, Michael Boehnel, Ahmad Osman, Nils Reims, Michael Salamon, Norman Uhlmann. "High energy CT scanning applied to large aerospace samples". 3rd European Aeronautics Science Network Association International Workshop on Aerostructures, 9-11 October 2013, Milano, Italy.

        • Yuxia Duan, Ahmad Osman, Clemente Ibarra-Castanedo, Ulf Hassler, Xavier Maldague. "A comparative study on manual PoD analysis and automated evaluation of thermography images of composite materials". 16th International Symposium on Applied Electromagnetic and Mechanics, 31st July to 2nd August 2013, Quebec, Canada.

      • 2012:
        • Stefanie Huebner, Ulf Hassler, Yuxia Duan, Ahmad Osman, Xavier Maldague. "Study of the Influence of corrosion on materials properties of Aluminum foams with Computed Tomography and Thermography". 4th symposium for NDT in Aerospace, November 2012, Augsburg, Germany.

        • Ahmad Osman, Valerie Kaftandjian, Ulf Hassler. "Automatic classification of 3D segmented CT data using data fusion and support vector machine". Journal of Electronic Imaging of Spie, Vol. 21 May 2012.

        • Ahmad Osman, Valerie Kaftandjian, Ulf Hassler, Joachim Hornegger. "An automated data processing method dedicated to 3D ultrasonic nondestructive testing of composite pieces". International Symposium on Ultrasound in the Control of Industrial Processes, 18-20 April 2012, Madrid, Spain.

      • 2011:
        • Ahmad Osman, Valerie Kaftandjian, Ulf Hassler. "Improvement of X-ray castings inspection reliability by using Dempster-Shafer data fusion theory". Pattern Recognition Letters 32, Vol. 2 Issue 32, pp. 168-180, 2011.

        • Ahmad Osman, Valerie Kaftandjian, Ulf Hassler. "Interest of data fusion for improvement of classification in X-ray inspection". International Symposium on Digital Industrial Radiology and Computed Tomography, 20-22 June 2011, Berlin, Germany.

      • 2010:
        • Ahmad Osman, Ulf Hassler, Markus Rehak, Randolf Hanke, Valerie Kaftandjian. "Steps towards automated 3D-evaluation of ultrasonic data". International Symposium on NDT in Aerospace, 22-24 November 2010, Hamburg, Germany.

        • Ahmad Osman, Valerie Kaftandjian, Ulf Hassler. "Application of data fusion theory and support vector machine to x-ray castings inspection". In the 10th European Conference on Non-Destructive Testing, 7–11 June 2010, Moscow, Russia.

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Prof. Dr.-Ing. Ahmad Osman

htw saar
Goebenstraße 40
66117 Saarbrücken
Professor für das Lehrgebiet Prüftechnologien und Prüfverfahren, insbesondere für Automatisierte Signal- und Bildverarbeitung von Sensordaten
Raum 5105
t +49 (0)681/9302-3628
t +49 (0)681/5867 – 947