Practical self-calibration of pan-tilt cameras
SCIE
SCOPUS
- Title
- Practical self-calibration of pan-tilt cameras
- Authors
- Kim, H; Hong, KS
- Date Issued
- 2001-10
- Publisher
- IEE-INST ELEC ENG
- Abstract
- The authors propose a practical self-calibration method of rotating and zooming cameras. The problem with previous methods occurs when the camera motion is almost fully zoomed with very little rotation, which is called the 'near-degenerate' configuration. In that case, the solutions become unstable and rotation angles cannot be calculated. When a pan-tilt camera (without z-axis rotation) is adopted and the intrinsic camera parameters are simplified. the near-degenerate configuration can be overcome and a closed-form solution obtained. Because pan-tilt cameras can be assumed for most stationary cameras (i.e. without translation) and the assumptions about the intrinsic camera parameters do not seem to effect the self-calibration, the method provides a simple, practical solution to the self-calibration problem, In addition, the authors introduce a nonlinear algorithm that adjusts not only the camera parameters but also the inter-image homography so that more accurate image registration is made possible. Simulations and experiments with real images are presented.
- Keywords
- DISTORTION
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/19261
- DOI
- 10.1049/ip-vis:20010574
- ISSN
- 1350-245X
- Article Type
- Article
- Citation
- IEE PROCEEDINGS-VISION IMAGE AND SIGNAL PROCESSING, vol. 148, no. 5, page. 349 - 355, 2001-10
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