A New Feature Extraction Method for Classi cation of Agricultural Products from X-ray Images

نویسندگان

  • Ashit Talukder
  • David Casasent
  • Ha-Woon Lee
  • Pamela M. Keagy
  • Thomas F. Schatzki
چکیده

Classiication of real-time X-ray images of randomly oriented touching pistachio nuts is discussed. The ultimate objective is the development of a system for automated non-invasive detection of defective product items on a conveyor belt. We discuss the extraction of new features that allow better discrimination between damaged and clean items (pistachio nuts). This feature extraction and classiication stage is the new aspect of this paper; our new maximum representation and discriminating feature (MRDF) extraction method computes nonlinear features that are used as inputs to a new modiied k nearest neighbor classiier. In this work, the MRDF is applied to standard features (rather than iconic data). The MRDF is robust to various probability distributions of the input class and is shown to provide good classiication and new ROC (receiver operating characteristic) data.

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تاریخ انتشار 1998