Local detection of defects from image sequences

Rafajłowicz, E. ; Wnuk, M. ; Rafajłowicz, W.

International Journal of Applied Mathematics and Computer Science, Tome 18 (2008) no. 4, pp. 581-592.

Résumé

Our aim is to discuss three approaches to the detection of defects in continuous production processes, which are based on local methods of processing image sequences. These approaches are motivated by and applicable to images of hot metals or other surfaces, which are uniform at a macroscopic level, when defects are not present. The first of them is based on the estimation of fractal dimensions of image cross-sections. The second and third approaches are compositions of known techniques, which are selected and tuned to our goal. We discuss their advantages and disadvantages, since they provide different information on defects. The results of their testing on 12 industrial images are also summarized.

Détail

Keywords: image processing, fractal dimension, morphological operations
Mots-clés : przetwarzanie obrazu, wymiar fraktalny, operacje morfologiczne

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