Easy calibration of a head-mounted projective display for augmented reality systems

Chunyu Gao, Hong Hua, Narendra Ahuja

Research output: Contribution to conferencePaper

3 Scopus citations

Abstract

Augmented reality (AR) superimposes computer-generated virtual images on the real world to allow users exploring both virtual and real worlds simultaneously. For a successful augmented reality application, an accurate registration of a virtual object with its physical counterpart has to be achieved, which requires precise knowledge of the projection information of the viewing device. This paper proposes a fast and easy off-line calibration strategy based on well-established camera calibration methods. Our method does not need exhausting effort on the collection of world-to-image correspondence data. All the correspondence data are sampled with an image based method and they are able to achieve sub-pixel accuracy. The method is applicable for all AR systems based on optical see-through head-mounted display (HMD), though we took a head-mounted projective display (HMPD) as the example. In this paper, we first review the calibration requirements for an augmented reality system and the existing calibration methods. Then a new view projection model for optical see through HMD is addressed in detail, and proposed calibration method and experimental result are presented. Finally, the evaluation experiments and error analysis are also included. The evaluation results show that our calibration method is fairly accurate and consistent.

Original languageEnglish (US)
Pages53-60
Number of pages8
StatePublished - Jul 21 2003
Externally publishedYes
EventIEEE Virtual Reality 2003 Conference - Los Angeles, CA, United States
Duration: Mar 22 2003Mar 26 2003

Other

OtherIEEE Virtual Reality 2003 Conference
CountryUnited States
CityLos Angeles, CA
Period3/22/033/26/03

ASJC Scopus subject areas

  • Software

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  • Cite this

    Gao, C., Hua, H., & Ahuja, N. (2003). Easy calibration of a head-mounted projective display for augmented reality systems. 53-60. Paper presented at IEEE Virtual Reality 2003 Conference, Los Angeles, CA, United States.