小视场长焦距光电系统畸变测量校正方法研究  

Research on distortion measurement and calibration technology for narrow-field and long-focal-length optical system

作　　者：李茜[1] 

机构地区：[1]西安工业大学电子信息工程学院,西安710032

出　　处：《国外电子测量技术》2012年第2期35-38,共4页Foreign Electronic Measurement Technology

摘　　要：光电系统的畸变严重影响了成像质量,故其定量测量及校正是武器攻击精度的关键。针对小视场长焦距光电系统畸变问题,首先,应用高对比度、高亮度、高均匀性等优点的高性能电子靶标,建立了畸变测量系统,实现了对小视场长焦距光电系统畸变数字化、客观化的测量;其次,采用逆向算法建立多项式模型,利用最小二乘拟合算法对该系统畸变进行校正。结果表明,对于该系统,校正后的平均相对畸变优于0.15%。The distortion of optical system has seriously affected on the image quality. Therefore its quantitative measure- ment and calibration is the key to the attack accuracy of the weapon. Aiming at the problem as distortion of the system, Firstly the distortion measurement system is established to realize digital and objectification measurement by use of the high performance electronic target of high contrast, high brightness and excellent uniformity Then polynomial model is established by applying the inversion algorithm and the measured distortion is calibrated by the least squares fit. The cali- brated result shows that the average distortion after calibration is better than 0.15%.

关 键 词：畸变测量 畸变校正 逆向多项式 

分 类 号：TN29[电子电信—物理电子学]