Contour-based shape representation using principal curves

Esra Ataer-Cansizoglu, Erhan Bas, Jayashree Kalpathy-Cramer, Greg C. Sharp, Deniz Erdogmus

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


Extraction and representation of contours are challenging problems and are crucial for many image processing applications. In this study, given a membership function that returns the score of a point belonging to a contour, we propose a method for contour representation based on the principal curve (PC) of this function. The proposed method provides a piecewise linear representation of the contour with fewer points while preserving shape. Varied experiments are conducted, including lung boundary representation in CT images and shape representation in handwritten images. The results show that the technique provides accurate shape representation.

Original languageEnglish (US)
Pages (from-to)1140-1150
Number of pages11
JournalPattern Recognition
Issue number4
StatePublished - Apr 2013
Externally publishedYes


  • Curve/contour matching
  • Shape representation and analysis

ASJC Scopus subject areas

  • Software
  • Signal Processing
  • Computer Vision and Pattern Recognition
  • Artificial Intelligence


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