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

作　　者：温小艳 刘素娟 杨荣骞 王志刚 

机构地区：[1]Department of Biomedical Engineering,South China University of Technology

出　　处：《Optoelectronics Letters》2012年第6期409-413,共5页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.81101130);the Fundamental Research Funds for Central Universities under the South China University of Technology(No.2012ZZ0095);the Science and Technology Program of Guangdong Province(No.2012B031800026)

摘　　要：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 near-infrared 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.

关 键 词：Infrared devices 

分 类 号：TN948.41[电子电信—信号与信息处理]