HomePage of Petra Wiederhold, Indentation Images Data Bank.

 

CINVESTAV / UV  - Vickers Indentation Images Data Bank

These microscopic Vickers indentation images were obtained from Steel and Hafnium Nitride samples, acquired by a CCD camera implemented in the microdurometer Mitutoyo model HM-124, within a joint project by CINVESTAV-IPN (Mexico City) and University of Veracruz (Boca del Rio, Mexico).

Online publication of this Data Bank started in July 2018; it will be ocasionally extended.

Most images are of 640x480 pixels size and bmp format. Each image contains exactly one indentation footprint of approximately rhombic shape and aligned orientation. Size and position in the image of the footprint varies, also a slight rotation is possible.


Image Group "SteelUnpolished":

 60 indentation images obtained from Steel-316 samples, roughly polished surface, 50-fold magnification, indenter load 500 gf.

       To see miniature versions of these images at a glance, click HERE.

  To download a rar-file which contains all images, click HERE.

       SteelUnpolished_ExpertA_Table.pdf --- table containing the annotation manually generated by Expert A --- ground true coordinates of the four vertices of each indentation.

       SteelUnpolished_ExpertA.txt --- the same annotation by Expert A but in simple txt-format.

       SteelUnpolished_ResultsA.pdf --- results of image analysis including error analysis with respect to annotation by Expert A.

Image Group "SteelPolished":

 40 indentation images obtained from Steel-316 samples, specular-polished surface, 50-fold magnification, indenter load 500 gf.

           To see miniature versions of these images at a glance, click HERE.

  To download a rar-file which contains all images, click HERE.

       SteelPolished_ExpertA_Table.pdf --- table containing the annotation manually generated by Expert A --- ground true coordinates of the four vertices of each indentation.

       SteelPolished_ExpertA.txt --- the same annotation by Expert A but in simple txt-format.

       SteelPolished_ResultsA.pdf --- results of image analysis including error analysis with respect to annotation by Expert A.

Image Group "Deformed":

 50 indentation images obtained from Hafnium samples, 50-fold magnification, indenter load 300 gf.

           To see miniature versions of these images at a glance, click HERE.

  To download a rar-file which contains all images, click HERE.

       Deformed_ExpertA_Table.pdf --- table containing the annotation manually generated by Expert A --- ground true coordinates of the four vertices of each indentation.

       Deformed_ExpertA.txt --- the same annotation by Expert A in simple txt-format.

       Deformed_ResultsA.pdf --- results of image analysis including error analysis with respect to annotation by Expert A.

Image Group "Imperfection":

 35 indentation images obtained from Steel-316 samples, 50-fold magnification, indenter load 500 gf, presence of diverse types of imperfections.

           To see miniature versions of these images at a glance, click HERE.

  To download a rar-file which contains all images, click HERE.

       Imperfection_ExpertA_Table.pdf --- table containing the annotation manually generated by Expert A --- ground true coordinates of   the four vertices of each indentation.

       Imperfection_ExpertA.txt --- the same annotation by Expert A but in simple txt-format.

       Imperfection_ResultsA.pdf --- results of image analysis including error analysis with respect to annotation by Expert A.