Computing camera parameters using vanishing-line information from a rectangular parallelepiped

Ling Ling Wang, Wen-Hsiang Tsai*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

A new approach to camera calibration using vanishing line information for three-dimensional computer vision is proposed. Calibrated parameters include the orientation, the position, the focal length, and the image plane center of a camera. A rectangular parallelepiped is employed as the calibration target to generate three principal vanishing points and then three vanishing lines from the projected image of the parallelepiped. Only a monocular image is required for solving these camera parameters. It is shown that the image plane center is the orthocenter of a triangle formed by the three vanishing lines. From the slopes of the vanishing lines the camera orientation parameters can be determined. The focal length can be computed by the area of the triangle. The camera position parameters can then be calibrated by using related geometric projective relationships. The derived results show the geometric meanings of these camera parameters. The calibration formulas are analytic and simple to compute. Experimental results show the feasibility of the proposed approach for a practical application-autonomous land vehicle guidance.

Original languageEnglish
Pages (from-to)129-141
Number of pages13
JournalMachine Vision and Applications
Volume3
Issue number3
DOIs
StatePublished - 1 Jun 1990

Keywords

  • camera calibration
  • imaging geometry
  • three-dimensional computer vision
  • vanishing lines
  • vanishing points

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