详解 MNIST 数据集(转)https://blog.csdn.net/simple_the_best/article/details/75267863
+https://mrlittlepig.github.io/2017/04/30/tensorflow-for-image-processing/
+https://blog.csdn.net/sysushui/article/details/53257185
https://blog.csdn.net/zzZ_CMing/article/details/79192815
https://www.cnblogs.com/denny402/p/5853538.html