SFM（structure from motion）

1、opencv 三维重建

https://github.com/834810071/OpenCV_SFM   

https://blog.csdn.net/AIchipmunk/article/details/51232861?depth_1-utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-1&utm_source=distribute.pc_relevant.none-task-blog-BlogCommendFromMachineLearnPai2-1

https://blog.csdn.net/AIchipmunk/article/details/48157369  

2、levmar : Levenberg-Marquardt nonlinear least squares algorithms in C/C++

http://users.ics.forth.gr/~lourakis/levmar/