| Xiao-yan Wen,Su-juan Liu,Rong-qian Yang,Zhi-gang Wang.Pattern design and realization for calibrating near infrared camera in surgical navigation[J].Optoelectronics Letters,2012,8(6):409-413 |
| Pattern design and realization for calibrating near infrared camera in surgical navigation |
| Author Name | Affiliation | E-mail | | Xiao-yan Wen | Department of Biomedical Engineering, South China University of Technology, Guangzhou, 510006, China | | | Su-juan Liu | Department of Biomedical Engineering, South China University of Technology, Guangzhou, 510006, China | | | Rong-qian Yang | Department of Biomedical Engineering, South China University of Technology, Guangzhou, 510006, China | bmeyrq@gmail.com | | Zhi-gang Wang | Department of Biomedical Engineering, South China University of Technology, Guangzhou, 510006, China | |
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| Abstract: |
| A calibration board composed of 8 × 8 near-infrared surface-mounted diodes (NIR-SMDs) (940 nm) is designed. Meanwhile, a common binocular measurement system with the average error less than 0.1320 mm is used to obtain the geometric information of this board. A calibration method with the designed pattern is performed to obtain the parameters of the nearinfrared camera (NIRC). In the experiment, the average relative errors of focal length and principal point are 0.244% and 0.735%, respectively. The mean of image residuals is less than 0.01 pixel. The error of three-dimensional (3D) measurement is less than 0.3 mm. All those results indicate that the designed calibration board is suitable and accurate for calibrating NIRC. |
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