对物体表面进行投影算法的重建，基于OpenCV和OpenGL来实现，算法本身比较简单，适于初学者参考-The projection of the surface reconstruction algorithm, based on OpenCV and OpenGL to implement the algorithm itself is relatively simple, suitable for beginners reference

FBP重建算法 滤波反投影 投影 反投影(FBP reconstruction algorithm, filtered back projection, projection backprojection)