Pattern design and realization for calibrating near infrared camera in surgical navigation

• Published in: Optoelectronics letters Vol. 8; no. 6; pp. 409 - 413
• Main Author: 温小艳 刘素娟 杨荣骞 王志刚
• Format: Journal Article
• Language: English
• Published: Heidelberg Tianjin University of Technology 01.11.2012
• Subjects: Lasers; Optical Devices; Optics; Photonics; Physics; Physics and Astronomy; 平均相对误差; 平均误差; 手术; 校准方法; 测量系统; 红外相机; 航模; 设计; Geometric Information; Surgical Navigation; Calibration Method; Principal Point; Average Relative Error
• ISSN: 1673-1905; 1993-5013
• DOI: 10.1007/s11801-012-2265-y

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 （3 D） measurement is less than 0.3 mm. All those results indicate that the designed calibration board is suitable and accurate for calibrating NIRC.