Image Segmentation of Vickers Indentations Using Shape from Focus

  • Michael Gadermayr
  • Andreas Uhl
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7324)


To measure the hardness of a material, an indenter is pressed into the material and the deformation is measured. As we focus on Vickers hardness testing, our exercise is to compute the diagonal lengths of a square indentation. We especially investigate if it is possible to reconstruct the shape of the indentation by the use of the Shape-from-Focus method. We show that the shape information alone does not contain enough information for a robust segmentation. However, we incorporate the depth information into an effective existing approach and achieve significantly better results.


Depth Information Shape Information Vickers Indentation Focus Measure Focus Level 
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Copyright information

© Springer-Verlag Berlin Heidelberg 2012

Authors and Affiliations

  • Michael Gadermayr
    • 1
  • Andreas Uhl
    • 1
  1. 1.Multimedia Signal Processing and Security Lab, Department of Computer SciencesUniversity of SalzburgAustria

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