Paper Info
Title
Flexible online calibration for a mobile projector-camera system
Abstract
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.
Year
DOI
Venue
2010
10.1007/978-3-642-19282-1_45
ACCV (4)
Keywords
Field
DocType
projector camera system,mobile projector,real system,stationary camera,planar screen,correct rectangular shape,correct aspect ratio,mobile projector-camera system,discontinuous temporal change,sequential ls method,flexible online calibration,hand-held projector,aspect ratio
Computer vision,Fiducial marker,Computer graphics (images),Computer science,Projector,Homography,Planar,Artificial intelligence,Camera image,Calibration
Conference
Volume
ISSN
Citations 
6495
0302-9743
0
PageRank 
References 
Authors
0.34
12
3
Name
Order
Citations
PageRank
Daisuke Abe130.74
Takayuki Okatani249250.10
Koichiro Deguchi351969.40