@inproceedings{BarthHerpersGressnich2007,
  author    = {Alexander Barth and Rainer Herpers and Markus Gre{\"s}nich},
  title     = {Visual Quality Control in Heat Shrink Tubing},
  series = {Proceedings of the 5th International Conference on Computer Vision Systems (ICVS 2007). Bielefeld, 21.-24. M{\"a}rz 2007},
  isbn      = {978-3-00-020933-8},
  doi       = {10.2390/biecoll-icvs2007-104},
  year      = {2007},
  abstract  = {In this contribution a machine vision inspection system is presented which is designed as a length measuring sensor. It is developed to be applied to a range of heat shrink tubes, varying in length, diameter and color. The challenges of this task were the precision and accuracy demands as well as the real-time applicability of the entire approach since it should be realized in regular industrial line production. In production, heat shrink tubes are cut to specific sizes from a continuous tube. A multi-measurement strategy has been developed, which measures each individual tube segment several times with sub pixel accuracy while being in the visual field. The developed approach allows for a contact-free and fully automatic control of 100\% of produced heat shrink tubes according to the given requirements with a measuring precision of 0.1mm. Depending on the color, length and diameter of the tubes considered, a true positive rate of 99.99\% to 100\% has been reached at a true negative rate of > 99.7.},
  language  = {en}
}