摄像机图像相对畸变系数的计算  

Calculation of the relative distortion coefficient about camera

作　　者：钟堰利[1] 勾瑞[1] 胡宏清[1] 

机构地区：[1]北京理工大学光电工程系,北京100081

出　　处：《光学技术》2002年第4期382-384,共3页Optical Technique

摘　　要：主要论述了摄像机相对畸变系数的计算方法。该计算方法包含了三个计算过程 :第一 ,规定了每个像素理想像高的坐标表示法 ;第二 ,在坐标系中确定理想像高相对畸变系数的一般表示 ;第三 ,利用光学系统的对称性 ,经过适当的坐标变换 ,逐点计算出整幅画面实际像高的坐标表示。给出了计算步骤 ,并通过编程可获得摄像机的四个相对畸变系数的文件。The calculating way of the relative distortion coefficient about camera is discu ssed. This way includes three processes: the first process prov ides a coordinate for ideal image height per pixel in the picture; the Second pr ocess determines ordinary express of the relative distortion coefficient for ide al image height in the coordinate; the third process calculates the coordinate o f the practical image height in the complete picture by using the symmetrical ch aracteristic of the optical system and by the advisable commutation of coordinat e. Finally, the steps of the calculation are given. On the basis of the steps, four files of the relative distortion coefficient about camera are obtained by compiling in a computer.

关 键 词：摄像机 相对畸变系数 计算 畸变 光学系统 网格点 像高 

分 类 号：TN948.41[电子电信—信号与信息处理]