Gradient-based fast connectivity weighted Hough transform

Kim Jeongtae, Shin Jiyoung

Research output: Contribution to journalArticlepeer-review


The connectivity weighted Hough transform is a useful method for detecting well-connected short lines without generating false lines yet requires extensive computation. This letter describes a method that reduces the computation of the connectivity weighted Hough transform by removing unnecessary weight calculations using the gradient angles of feature points. In simulations with synthetic images and experiments with liquid crystal display panel images, the proposed method showed significantly improved speed without compromising detectability.

Original languageEnglish
Pages (from-to)715-717
Number of pages3
JournalTransactions of the Korean Institute of Electrical Engineers
Issue number4
StatePublished - Apr 2008


  • Connectivity
  • Gradient
  • Hough transform
  • LCD panel inspection
  • Line defects


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