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Project Description

This is "The Multimedia Signal Processing and Security Lab", short WaveLab, website. We are a research group at the Computer Sciences Department of the University of Salzburg headed by Andreas Uhl. The short name "WaveLab" already indicates that wavelets are among our favorite tools - we have 15 years of experience in this area. Our research is focused on Multimedia Security including Watermarking, Image and Video Compression, Medical Image Classification, and Biometrics.
   

Automated Hardness Testing using Image Processing and Computer Vision Methods (VisHard)

 

Project Description:

VisHard (FFG Bridge 2 project 822682) is a project on applying advanced image processing and vision techniques for automated hardness measurement. Materials’ hardness can be determined by measuring the dimensions of indentations generated by standardized sources. Pictures of indentations are taken by a camera and analysed using vision techniques tailored specifically to the hardness measurement problem. This project is conducted in cooperation with EMCO TEST.

 
 

Members:

 
 

Timeframe:

  • Oct 2009 - Sep 2011
 
 

Publications:

  1. [Gadermayr12g   ] Active Contours Methods with Respect to Vickers Indentations Michael Gadermayr, Andreas Maier, Andreas Uhl Machine Vision and Applications 24:6, pp. 1183-1196, Springer-Verlag, 2013
  2. [Maier13a ] AreaMap and Gabor Filter Based Vickers Hardness Indentation Measurement A. Maier, A. Uhl In Proceedings of the 21st European Signal Processing Conference, EUSIPCO '13Marrakech, Morocco, Sep. 2013
  3. [Gadermayr12c  ] Image Segmentation of Vickers Indentations using Shape from Focus Michael Gadermayr, Andreas Uhl In Campilho, Aurélio J. C., Kamel, Mohamed S., editors, Proceedings of the International Conference on Image Analysis and Recognition (ICIAR'12), pp. 149-157, Aveiro, Portugal, Springer LNCS, 7324, June 25 - 27
  4. [Gadermayr12d  ] The Impact of Unfocused Vickers Indentation Images on the Segmentation Performance Michael Gadermayr, Andreas Maier, Andreas Uhl In Bebis, George et al, editors, Proceedings of the 8th International Symposium on Visual Computing (ISVC'12), pp. 368-378, Rethymno, Greece, Springer LNCS, 7432, July 16 - 18
  5. [Maier12a  ] Efficient focus assessment for a computer vision-based Vickers hardness measurement system A. Maier, G. Niederbrucker, S. Stenger, A. Uhl Journal of Electronic Imaging 21, pp. 021114, 2012
  6. [Maier12c ] Accelerated Centre-of-Gravity Calculation for Massive Numbers of Image Patches Andreas Maier In George Bebis, Richard Boyle, Bahram Parvin, Darko Koracin, Charless Fowlkes, Sen Wang, Min-Hyung Choi, Stephan Mantler, Jürgen Schulze, Daniel Acevedo, Klaus Mueller, Michael Papka, editors, Advances in Visual Computing, pp. 566-574, Lecture Notes in Computer Science, 7431, Springer, 2012
  7. [Maier12d ] The AreaMap Operator and its Application to Vickers Hardness Testing Images (Invited paper) A. Maier, A. Uhl International Journal of Future Generation Communication and Networking (Special Issue on Image and Signal Processing – Best papers of ICISP 2012) 5:4, pp. 1-16, 2012
  8. [Gadermayr12a  ] Robust Algorithm for Automated Microindentation Measurement in Vickers Hardness Testing Michael Gadermayr, Andreas Maier, Andreas Uhl Journal of Electronic Imaging 21, pp. 021109, 2012
  9. [Maier12b ] Fast orientation invariant template matching using centre-of-gravity information A. Maier, A. Uhl In Computational Modelling of Objects Represented in Images: Fundamentals, Methods and Applications III, Proceedings of the International Symposium CompIMAGE 2012, pp. 97-101, Rome, Italy, September 5 - 7, 2012
  10. [Gadermayr12b  ] Dual-resolution active contours segmentation of Vickers indentation images with shape prior initialisation Michael Gadermayr, Andreas Uhl In A. Elmoataz, D. Mammass, O. Lezoray, F. Nouboud, D. Aboutajdine, editors, Proceedings of the 5th International Conference on Image and Signal Processing (ICISP'12), pp. 362-369, Agadir, Morocco, Springer LNCS, 7340, June 28 - 30
  11. [Gadermayr12e  ] Vickers Image Segmentation using Active Contours Michael Gadermayr Master thesis, Department of Scientific Computing, University of Salzburg, Austria, May 2012
  12. [Maier11b ] Robust Automatic Indentation Localisation and Size Approximation for Vickers Microindentation Hardness Indentations A. Maier, A. Uhl In Proceedings of the 7th International Symposium on Image and Signal Processing (ISPA 2011), pp. 295-300, Dubrovnik, Croatia, September 4 - 6, 2011
  13. [Maier11a ] Measuring Image Sharpness for A Computer Vision-based Vickers Hardness Measurement System A. Maier, G. Niederbrucker, A. Uhl In J.-C. Pinoli, J. Debayle, Y. Gavet, F. Cruy, C. Lambert, editors, Tenth International Conference on Quality Control for Artificial Vision (QCAV'11), pp. 80000N-1-80000N-10, St. Etienne, France, Proceedings of SPIE, 8000, SPIE, June 2011
  14. [Gadermayr11a ] Algorithms for microindentation measurement in automated Vickers hardness testing Michael Gadermayr, Andreas Maier, Andreas Uhl In J.-C. Pinoli, J. Debayle, Y. Gavet, F. Cruy, C. Lambert, editors, Tenth International Conference on Quality Control for Artificial Vision (QCAV'11), pp. 80000M-1-80000M-10, St. Etienne, France, Proceedings of SPIE, 8000, SPIE, June 2011