Fold principal axis-a new tool for defining the orientations of rotationally symmetric shapes

Sheng Lin Chou, Chih_Ching Lin, Wen-Hsiang Tsai *

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Chou, S.-L., J.-C. Lin and W.-H. Tsai, Fold principal axis-a new tool for defining the orientations of rotationally symmetric shapes, Pattern Recognition Letters 12 (1991) 109-115. A new type of principal axis, namely, fold principal axis, is introduced in this paper, which can be used to define the orientations of rotationally symmetric shapes. A given shape is first transformed into a new shape on which the well-defined traditional principal axis is detected. The traditional principal axis is then transformed back to obtain the proposed fold principal axes of the given shape. The properties of such axes, including the uniqueness, existence, and invariance under rotation, translation, and scaling, are investigated. Some illustrative examples are also given.

Original languageEnglish
Pages (from-to)109-115
Number of pages7
JournalPattern Recognition Letters
Volume12
Issue number2
DOIs
StatePublished - Feb 1991

Keywords

  • fold principal axis
  • fold-expanded shape
  • high-order generalized principal axis
  • principal axis
  • Rotationally symmetric shape

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