Projector calibration by "inverse camera calibration"

  • Authors:
  • Ivan Martynov;Joni-Kristian Kamarainen;Lasse Lensu

  • Affiliations:
  • Machine Vision and Pattern Recognition Laboratory, (Kouvola Unit), Lappeenranta University of Technology, Finland;Machine Vision and Pattern Recognition Laboratory, (Kouvola Unit), Lappeenranta University of Technology, Finland;Machine Vision and Pattern Recognition Laboratory, (Kouvola Unit), Lappeenranta University of Technology, Finland

  • Venue:
  • SCIA'11 Proceedings of the 17th Scandinavian conference on Image analysis
  • Year:
  • 2011

Quantified Score

Hi-index 0.00

Visualization

Abstract

The accuracy of 3-D reconstructions depends substantially on the accuracy of active vision system calibration. In this work, the problem of video projector calibration is solved by inverting the standard camera calibration work flow. The calibration procedure requires a single camera, which does not need to be calibrated and which is used as the sensor whether projected dots and calibration pattern landmarks, such as the checkerboard corners, coincide. The method iteratively adjusts the projected dots to coincide with the landmarks and the final coordinates are used as inputs to a camera calibration method. The otherwise slow iterative adjustment is accelerated by estimating a plane homography between the detected landmarks and the projected dots, which makes the calibration method fast.