Flexible online calibration for a mobile projector-camera system

Daisuke Abe, Takayuki Okatani, Koichiro Deguchi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)


This paper presents a method for calibrating a projector camera system consisting of a mobile projector, a stationary camera, and a planar screen. The method assumes the projector to be partially calibrated and the camera to be uncalibrated, and does not require any fiducials or natural markers on the screen. For the system of geometrically compensating images projected on the screen from a hand-held projector so that the images will always be displayed at a fixed position of the screen in a fixed shape, the method makes the projected images geometrically rectified; that is, it makes them have the correct rectangular shape of the correct aspect ratio. The method automatically performs this calibration online without requiring any effort on the user's part; all the user has to do is project a video from the hand-held projector. Furthermore, when the system makes discontinuous temporal changes such as the case where the camera and/or the screen is suddenly relocated, it automatically recovers the calibrated state that was once lost. To realize these properties, we adopt the sequential LS method and extend it to be able to deal with temporal changes of the system. We show several experimental results obtained by a real system.

Original languageEnglish
Title of host publicationComputer Vision, ACCV 2010 - 10th Asian Conference on Computer Vision, Revised Selected Papers
Number of pages15
EditionPART 4
Publication statusPublished - 2011
Event10th Asian Conference on Computer Vision, ACCV 2010 - Queenstown, New Zealand
Duration: 2010 Nov 82010 Nov 12

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
NumberPART 4
Volume6495 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Other10th Asian Conference on Computer Vision, ACCV 2010
Country/TerritoryNew Zealand

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)


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