Distance and angle measurement of objects on an oblique plane based on pixel number variation of CCD images

Chen Chien James Hsu, Ming Chih Lu, Yin Yu Lu

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

This paper presents an image-based system for measuring target objects on an oblique plane based on pixel number variation of charge-coupled device images for digital cameras by referencing to two arbitrarily designated points in the image frame. Based on an established relationship between the displacement of the camera movement along the photographing direction and the variation in pixel counts between the reference points in the images, photographic distance and incline angle for objects lying on an oblique plane can be calculated via the proposed method. As a real-case application of the proposed approach, 2-D localization of target objects in robot soccer competitions is also demonstrated to show the effectiveness of the proposed approach. To allow the use of widely available digital zoom cameras for ranging and localization by the proposed method, a parameter equivalent to the displacement due to the camera movement is also investigated and derived in this paper.

Original languageEnglish
Article number5715878
Pages (from-to)1779-1794
Number of pages16
JournalIEEE Transactions on Instrumentation and Measurement
Volume60
Issue number5
DOIs
Publication statusPublished - 2011 May 1

Keywords

  • Charge-coupled device (CCD) images
  • digital cameras
  • distance measurement
  • image-based measuring systems
  • incline angle
  • localization
  • oblique plane
  • photogrammetry

ASJC Scopus subject areas

  • Instrumentation
  • Electrical and Electronic Engineering

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