全景立体球视觉下的鱼眼镜头参数标定方法

The parameter calibration method based on panoramic and stereo vision

针对鱼眼镜头拍摄图像存在较大畸变以及在设计制造过程中存在误差的问题,提出了一种对鱼眼镜头进行标定的方法.首先是对成像系统进行建模,进而对成像系统的内外参数进行标定;采用最小二乘法拟合圆的算法对图像中心进行标定,算法的仿真结果表明,该方法可以准确的对视觉系统的内外参数进行标定,径向畸变系数的标定误差范围小于0.1个像素值.

To solve the problem of the distortion and error on fish-eye lens exists in the design, manufacture and assembly proce-ss, proposed a fish-eye lens calibration method, first, modeling of the imaging system, then calibration the interior and exterior parameters ; using the least squares fitting circle method to calibration the center of the image. The algorithm simulation results show that, it proved that the method can accurately calibrate the internal and external parameters of the visual system, the range of radial distortion coefficients calibration error less than 0. 1 pixel.