Measuring method for the object pose based on monocular vision technology

Changku Sun, Zimiao Zhang, Peng Wang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

5 Scopus citations

Abstract

Position and orientation estimation of the object, which can be widely applied in the fields as robot navigation, surgery, electro-optic aiming system, etc, has an important value. The monocular vision positioning algorithm which is based on the point characteristics is studied and new measurement method is proposed in this paper. First, calculate the approximate coordinates of the five reference points which can be used as the initial value of iteration in the camera coordinate system according to weakp3p; Second, get the exact coordinates of the reference points in the camera coordinate system through iterative calculation with the constraints relationship of the reference points; Finally, get the position and orientation of the object. So the measurement model of monocular vision is constructed. In order to verify the accuracy of measurement model, a plane target using infrared LED as reference points is designed to finish the verification of the measurement method and the corresponding image processing algorithm is studied. And then The monocular vision experimental system is established. Experimental results show that the translational positioning accuracy reaches ±0.05mm and rotary positioning accuracy reaches ±0.2°.

Original languageEnglish
Title of host publicationOptical Metrology and Inspection for Industrial Applications
DOIs
StatePublished - 2010
Externally publishedYes
EventOptical Metrology and Inspection for Industrial Applications - Beijing, China
Duration: 18 Oct 201020 Oct 2010

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7855
ISSN (Print)0277-786X

Conference

ConferenceOptical Metrology and Inspection for Industrial Applications
Country/TerritoryChina
CityBeijing
Period18/10/1020/10/10

Keywords

  • coordinates
  • infrared LED
  • initial
  • measurement
  • monocular vision
  • point characteristics
  • position and orientation
  • weak-p3p

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