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-125, of Micro and Nanotechnology Research Center of Veracruzana University (Boca del Rio, Mexico).
Online publication of this Data Bank started in July 2018; it will be ocasionally extended. Most images are of 640×480 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 slightrotation is possible.
| Image Group 1: 68 indentation images obtained from Steel-316 samples and 2 samples of HfN, where the group shows specular-polished surface in the indentation image. To download all images of Group 1 with relative error less than 1%, click Group 1_1 and Group 1_2. To download all images of Group 1 with relative error between 1% and 3%, click Group 1_relative error 1-3% Table of Group 1— results of image analysis including error analysis with respect to annotation by Expert. Group 1— images with relative error less than 1% Group 1_between 1 and 3— images with relative error between 1% and 3% |
| Image Group 2 49 indentation images obtained from Steel-316 samples and 21 samples of HfN, where the group shows roughly polished surface in the indentation. To download all images of Group 2 with relative error less than 1%, click Group 2_1 and Group 2_2. To download all images of Group 2 with relative error between 1% and 3%, click Group 2_relative error 1-3% Table of Group 2–results of indentaion images analysis, which includes the comparison between annotations manually generated by Expert and values provided by our algorithm. Group 2— images with relative error less than 1% Group 2_between 1 and 3— images with relative error between 1% and 3% |
| Image Group 3: 24 indentation images obtained from Hafnium samples and 26 samples of Steel-316, where the group shows deformed indentations. To download all images of Group 3 with realtive error less than 1%, click Group 3. To download all images of Group 3 with relative error between 1% and 3%, click Group 3_relative error 1-3%. Table of Group 3— results of image analysis including error analysis with respect to annotation by Expert. Group 3— images with relative error less than 1%.Group 3_between 1 and 3— images with relative error between 1% and 3% |
| Image Group 4: 32 indentation images obtained from Steel-316 samples and 8 samples of HfN, where the group shows presence of diverse types of imperfections. To download all images of Group 4 with realtive error less than 1%, click Group 4.To download all images of Group 4 with relative error between 1% and 3%, click Group 4_relative error 1-3% Table of Group 4— results of image analysis including error analysis with respect to annotation by Expert . Group 4— images with relative error less than 1%. Group 4_between 1 and 3— images with relative error between 1% and 3% |