CNN直观理解

！注意filters数量（depth）的理解
！全连接层（dence）
https://zhuanlan.zhihu.com/p/297975441

https://woj.app/6491.html

http://www.zzvips.com/article/79635.html
TensorFlow、keras 模型构建

https://www.codeleading.com/article/29963512845/
数据集卷积报错：Input 0 of layer conv2d is incompatible with the layer: expected ndim=4, found ndim=3