Journal article
Method for out-of-focus camera calibration
Applied optics. Optical technology and biomedical optics, Vol.55(9), pp.2346-2352
03/20/2016
DOI: 10.1364/AO.55.002346
PMID: 27140572
Abstract
State-of-the-art camera calibration methods assume that the camera is at least nearly in focus and thus fail if the camera is substantially defocused. This paper presents a method which enables the accurate calibration of an out-of-focus camera. Specifically, the proposed method uses a digital display (e.g., liquid crystal display monitor) to generate fringe patterns that encode feature points into the carrier phase; these feature points can be accurately recovered, even if the fringe patterns are substantially blurred (i.e., the camera is substantially defocused). Experiments demonstrated that the proposed method can accurately calibrate a camera regardless of the amount of defocusing: the focal length difference is approximately 0.2% when the camera is focused compared to when the camera is substantially defocused.
Details
- Title: Subtitle
- Method for out-of-focus camera calibration
- Creators
- Tyler BellJing XuSong Zhang
- Resource Type
- Journal article
- Publication Details
- Applied optics. Optical technology and biomedical optics, Vol.55(9), pp.2346-2352
- DOI
- 10.1364/AO.55.002346
- PMID
- 27140572
- NLM abbreviation
- Appl Opt
- ISSN
- 1559-128X
- eISSN
- 2155-3165
- Grant note
- DOI: 10.13039/100000084, name: Directorate for Engineering (ENG), award: CMMI-1521048
- Language
- English
- Date published
- 03/20/2016
- Academic Unit
- Electrical and Computer Engineering
- Record Identifier
- 9984083840002771
Metrics
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