摘要
分析了小视场图像系统的成像特性,针对其非线性畸变提出了基于平行光栅技术的数字图像校正方法,应用图像系统的一阶综合径向畸变数学模型,求解畸变参数和校正参数并对图像进行校正。理论分析和试验表明,本方法简单有效,校正后的畸变影响降低到0.25个像素。并对图像的畸变中心和纵横比例因子对校正的影响做了探讨。
A geometric nonlinear distortion correction method for computer vision system with small view field is presented when its character is analyzed. The distortion coefficient and correction coefficient of synthetical radio distortion with one index are solved and image is corrected easily depended on parallel raster. By the experiment, the proposed method is validated feasible and efficient, distortion effect is decreased obviously. And the effect of the image distortion center bias and scale factor ratio offset on image correction quality is discussed.
出处
《工具技术》
北大核心
2006年第5期67-70,共4页
Tool Engineering
关键词
小视场
非线性畸变
图像校正
畸变中心
纵横比例因子
small view field, nonlinear distortion, distortion correction, distortion center, scale factor ratio
