×

Automated defect classification system

  • US 5,544,256 A
  • Filed: 10/22/1993
  • Issued: 08/06/1996
  • Est. Priority Date: 10/22/1993
  • Status: Expired due to Fees
First Claim
Patent Images

1. A digital computer for automatically classifying defects in an object comprising:

  • means for forming a defect image from a digital input image of an object;

    means for forming an adaptively labeled defect image from said digital input image and a reference label image of aid object;

    means for creating a plurality of defect feature measurements of a defect from at least said defect image, and said adaptively labeled image;

    fuzzy logic inference engine means having a plurality of if-then defect class rules each based on a plurality of fuzzy sets of fuzzy logic parameters, means for converting said defect feature measurements into fuzzy logic parameters and applying said converted parameters to said if-then rules to compute a delete class fuzzy set for each defect; and

    means lot deriving output data from each said defect class fuzzy set which classifies each defect.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×