Canny edge detection enhancement by scale multiplication

Paul Bao, Lei Zhang, Xiaolin Wu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

437 Citations (Scopus)


The technique of scale multiplication is analyzed in the framework of Canny edge detection. A scale multiplication function is defined as the product of the responses of the detection filter at two scales. Edge maps are constructed as the local maxima by thresholding the scale multiplication results. The detection and localization criteria of the scale multiplication are derived. At a small loss in the detection criterion, the localization criterion can be much improved by scale multiplication. The product of the two criteria for scale multiplication is greater than that for a single scale, which leads to better edge detection performance. Experimental results are presented.
Original languageEnglish
Pages (from-to)1485-1490
Number of pages6
JournalIEEE Transactions on Pattern Analysis and Machine Intelligence
Issue number9
Publication statusPublished - 1 Sep 2005
Externally publishedYes


  • Edge detection
  • Multiscale analysis
  • Scale multiplication

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Artificial Intelligence
  • Computer Vision and Pattern Recognition

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