一种摄像机亚象素线性标定方法  

New linear approach for camera calibration with sub-pixel accuracy

作　　者：张颖[1] 

机构地区：[1]长安大学信息工程学院,西安710064

出　　处：《计算机工程与应用》2007年第9期56-58,共3页Computer Engineering and Applications

摘　　要：提出了一种考虑径向畸变的摄像机线性标定方法。采用一个方格图样模板进行标定,先利用改进的Harris算子精确提取角点的亚象素坐标,通过预标定获得主点坐标;然后在考虑摄像机径向畸变的情况下建立摄像机模型,并求解摄像机内外参数。实验及误差分析表明:该标定方法具有较高的精度和较好的实时性。A new linear approach with radial distortion model for camera calibration is presented. Firstly,the improved Harris detector is applied to obtain the sub-pixel coordinates of the corners.Then a camera model with radial distortion is established to calculate the intrinsic and extrinsic parameters of the camera.The experimental results demonstrate its high accuracy and efficiency.

关 键 词：摄像机标定 角点提取 HARRIS算子 亚象素 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]