Intelligent visual recognition and classification of cork tiles with neural networks

  • Authors:
  • Antoniya Georgieva;Ivan Jordanov

  • Affiliations:
  • Nuffield Department of Obstetrics and Gynecology, University of Oxford, Oxford, UK;School of Computing, University of Portsmouth, Portsmouth, UK

  • Venue:
  • IEEE Transactions on Neural Networks
  • Year:
  • 2009

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Abstract

An intelligent machine vision system is investigated and used for pattern recognition and classification of seven different types of cork tiles. The system includes image acquisition with a charge-coupled device (CCD) camera, texture feature generation (co-occurrence matrices and Laws' masks), analysis and processing of the feature vectors [linear discriminant analysis (LDA) and principal component analysis (PCA)], and cork tiles classification with feedforward neural networks (NN), employing our GLPτS (genetic low-discrepancy search) hybrid global optimization method. In addition, the same NN are trained with backpropagation (BP) and the obtained results are compared with the ones from GLPτS. The NN generalization abilities are discussed and assessed with respect to the NN architectures and the texture feature sets. The reported results are very encouraging with testing rate reaching up to 95%.