摘要
在成像系统中,非线性几何畸变的高精度数字校正仍然是一个未能很好解决的问题。以径向几何畸变为主的非线性几何畸变模型为基础,通过对影响畸变参数测量精度的各种因素的分析,提出了一种不依赖于成像系统内部参数的迭代算法。实验表明,该方法能够精确地推算出实现畸变校正所需的参数,校正精度与CCD的采样量化值相当。
In the imaging system, the calibration of nonlinear geometric distortion is still a problem. Based on the distortion model in which the radial geometric distortion is considered as the chief factor,a general correcting method that is independent of interior parameters of the imaging system,is given and discussed in this paper via a detailed analysis of the factors which largely influence the accurate measurement of distortion parameters. The experimental results indicate that the needed parameters to implement the calibration can be accurately determined by this method, and the calibration error is equivalent to the sample quantization error of CCD sensor.
出处
《光电子．激光》
EI
CAS
CSCD
北大核心
2006年第2期158-161,共4页
Journal of Optoelectronics·Laser
基金
江苏省高技术计划项目(BG2004031)
关键词
几何畸变
畸变参数
校正
立体视觉
geometry distortion
distortion parameters
correction
stereo vision
