Automated defect inspection and classification of leather fabric

Choonjong Kwak, José A. Ventura, Karim Tofang-Sazi

Research output: Contribution to journalArticlepeer-review

40 Scopus citations


This paper describes an automated vision system for detecting and classifying surface defects on leather fabric. In the defect inspection process, visual defects are located and reported through a two-step segmentation procedure based on thresholding and morphological processing. In the defect classification process, the system utilizes both geometric and statistical features as its feature sets; that is, a new normalized compactness measure, and first-and second-order statistical features. In an effort to maximize the classification efficiency, a three-stage sequential decision-tree classifier is adopted for the classification of five types of defects: lines, holes, stains, wears, and knots. If line defects are identified as a result of classification, they are checked by a line combination algorithm to determine if they are parts of larger line defects and, in such a case, are reported as combined line defects. Satisfactory results were achieved in the classification test with an overall accuracy of 91.25%. 2001-IOS Press.

Original languageEnglish (US)
Pages (from-to)355-370
Number of pages16
JournalIntelligent Data Analysis
Issue number4
StatePublished - Jan 1 2001

All Science Journal Classification (ASJC) codes

  • Theoretical Computer Science
  • Computer Vision and Pattern Recognition
  • Artificial Intelligence


Dive into the research topics of 'Automated defect inspection and classification of leather fabric'. Together they form a unique fingerprint.

Cite this