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Performance assessment of multi-level image thresholding for paper quality inspection

Author

Listed:
  • Valentina Caldarelli
  • Luca Ceccarelli
  • Francesco Bianconi
  • Stefano A. Saetta
  • Antonio Fernández

Abstract

Automatic characterisation and detection of dirt particles in pulp and paper plays a pivotal role in the papermaking industry. Machine vision provides many potential advantages in terms of speed, accuracy and repeatability. Such systems make use of image processing algorithms which aim at separating paper and pulp impurities from the background. The most common approach is based on image thresholding, which consists of determining a set of intensity values that split an image into one or more classes, each representing either the background (i.e., an area with no defects) or an area with some types of contraries. In this paper, we present a quantitative experimental evaluation of four image thresholding methods (i.e., Otsu's, Kapur's, Kittler's and Yen's) for dirt analysis in paper. The results show that Kittler's method is the most stable and reliable for this task.

Suggested Citation

  • Valentina Caldarelli & Luca Ceccarelli & Francesco Bianconi & Stefano A. Saetta & Antonio Fernández, 2014. "Performance assessment of multi-level image thresholding for paper quality inspection," International Journal of Service and Computing Oriented Manufacturing, Inderscience Enterprises Ltd, vol. 1(4), pages 281-294.
    • Handle: RePEc:ids:ijscom:v:1:y:2014:i:4:p:281-294
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