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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)

Abstract

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.

Keywords

Depth Information Shape Information Vickers Indentation Focus Measure Focus Level 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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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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