白光数字图象频域分析法在CCD摄象机标定中的应用  

CALIBRATION OF CCD CAMERA BY WHITE LIGHT DIGITAL IMAGE ANALYSIS IN FREQUENCY DOMAIN

作　　者：杨新伟[1] 满洪高[1] 孙海珍[2] 

机构地区：[1]石家庄铁路职业技术学院交通系,石家庄050041 [2]石家庄铁道学院数理系,石家庄050043

出　　处：《机械强度》2010年第1期48-52,共5页Journal of Mechanical Strength

基　　金：国家自然科学基金(10772133);河北省自然科学基金(08M003);河北省教育厅基金(2009478)资助项目~~

摘　　要：结合标定算法和平移实验,提出利用白光数字图象频域分析法标定CCD(charge coupled device,电荷耦合图象传感器)摄象机的实验方法。采用具有随机斑点特征的平板作为标定板。利用三维精密调节架以已知位移平移标定板,借助CCD摄象机记录下平移前后的标定板图象。标定点的空间坐标由平移位移确定,其对应的象素坐标由白光数字图象频域分析法求得。最后根据标定点的空间坐标和象素坐标,利用标定算法求出CCD摄象机的内外参数。将实验结果与预设值相比较,验证该方法的正确性。By effective combination of calibration algorithm and translation experiment, the experimental method for CCD（ charge coupled device） camera calibration with white light digital image analysis in frequency domain was put forward. A flat plate with random speckle was used as the calibration plate. The calibration plate was translated with given displacement by the 3D precision adjusting device and the images of the calibration plate before and after translation was recorded using CCD camera. The space coordinates of calibration points were determined by translation displacement and the corresponding pixel coordinates was obtained by white light digital image analysis in frequency domination area. The internal and external parameters were calculated out with the calibration algorithm. The feasibility of this method was certified by comparing the experimental results with preset values.

关 键 词：摄象机标定 白光数字图象频域分析法 平移 随机斑点 

分 类 号：O348.11[理学—固体力学]