A Morphological Gradient Approach to Color Edge Detection

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A morphological gradient approach to color edge detection Evans, A.N.; Liu, X.U.; Image Processing, IEEE Transactions on Volume 15, Issue 6, June 2006 Page(s):1454 - 1463 Abstract: A new color edge detector based on vector differences is proposed. The basic technique gives as its output the maximum distance between the vectors within a mask. When applied to scalar-valued images, the method reduces to the classic morphological gradient. The technique is relatively computationally efficient and can also be readily applied to other vector-valued images. To improve the performance in the presence of noise, a novel pairwise outlier rejection scheme is employed. A quantitative evaluation using Pratt's figure of merit shows the new technique to outperform other recently proposed color edge detectors. In addition, application to real images demonstrates the approach to be highly effective despite its low complexity.
Original languageEnglish
Pages (from-to)1454-1463
Number of pages10
JournalIEEE Transactions on Image Processing
Issue number6
Publication statusPublished - Jun 2006


  • Color image processing
  • edge detection
  • morphological operations


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