仿射变换

https://www.zhihu.com/question/20666664

https://blog.csdn.net/xieyan0811/article/details/71106539

 https://blog.csdn.net/xiaowei_cqu/article/details/7616044

https://wenku.baidu.com/view/826a796027d3240c8447ef20.html

 

https://www.cnblogs.com/houkai/p/6660272.html
http://www.opencv.org.cn/opencvdoc/2.3.2/html/doc/tutorials/imgproc/imgtrans/warp_affine/warp_affine.html
https://blog.csdn.net/robert_chen1988/article/details/80498805
https://www.cnblogs.com/liekkas0626/p/5238564.html
https://blog.csdn.net/a464057216/article/details/54633312
https://blog.csdn.net/crazy_scott/article/details/80259476
https://blog.csdn.net/unclerunning/article/details/70893118
https://blog.csdn.net/andylei777/articl/details/78333817