SEnet模块（attention 机制）
https://mp.weixin.qq.com/s?__biz=MzA3MzI4MjgzMw==&mid=2650729486&idx=3&sn=5b2b6f0e7443ecf0971d4743d5480bb6&chksm=871b2870b06ca166bc18413060898886db534c2b5ade468f832d3f85d5d75549f15293cea6cd&mpshare=1&scene=1&srcid=0822wk5DEWG7YU89UZr1yEup#rd
Separable convolution
https://yinguobing.com/separable-convolution/