https://blog.csdn.net/c9Yv2cf9I06K2A9E/article/details/89507745
http://www.fenghz.xyz/VAE-train-tips/
知乎 https://www.zhihu.com/question/61607442/answer/440401209
那么先设置128,再设置为64,或者256,如果小更好,那么设置为32。