利用Tsai两步标定法实现摄像机的标定，里面有官方给的世界坐标和图像坐标便于理解-Tsai calibration method used to achieve two-step camera calibration, there are official to the world coordinates and image coordinates of easy to understand

这个片段从fsl上生成保存仿射矩阵，涉及NifTI素世界映射的源图像和目标图像。关于matlab 生成生物医学方面的图像-Functions to convert a saved affine matrix FSL flirt to a mm-coordinates matrixrelating to the NIfTI voxel-world mappings of the source and target image。

能够将图像坐标转化为世界坐标，根据图像像素修改参数(Can transform image coordinates into world coordinates, and modify parameters according to image pixels.)