//#ifndef CAFFE_H
//#define CAFFE_H
#ifndef CAFFE_REG_H
#define CAFFE_REG_H
#include "caffe/common.hpp"
#include "caffe/layers/input_layer.hpp"
#include "caffe/layers/conv_layer.hpp"
#include "caffe/layers/relu_layer.hpp"
#include "caffe/layers/pooling_layer.hpp"
#include "caffe/layers/lrn_layer.hpp"
#include "caffe/layers/inner_product_layer.hpp"
#include "caffe/layers/dropout_layer.hpp"
#include "caffe/layers/softmax_layer.hpp"
#include"caffe/layers/slice_layer.hpp"

namespace caffe
{
 extern INSTANTIATE_CLASS(InputLayer);
 //REGISTER_LAYER_CLASS(Input);
 extern INSTANTIATE_CLASS(ConvolutionLayer);
 REGISTER_LAYER_CLASS(Convolution);
 extern INSTANTIATE_CLASS(ReLULayer);
 REGISTER_LAYER_CLASS(ReLU);
 extern INSTANTIATE_CLASS(PoolingLayer);
 REGISTER_LAYER_CLASS(Pooling);
 extern INSTANTIATE_CLASS(LRNLayer);
 REGISTER_LAYER_CLASS(LRN);
 extern INSTANTIATE_CLASS(InnerProductLayer);
 extern INSTANTIATE_CLASS(DropoutLayer);
 extern INSTANTIATE_CLASS(SoftmaxLayer);
 REGISTER_LAYER_CLASS(Softmax);
 //REGISTER_LAYER_CLASS(LRN);
 // extern INSTANTIATE_CLASS(InputLayer);
 //extern INSTANTIATE_CLASS(InnerProductLayer);

 //extern INSTANTIATE_CLASS(LRNLayer);
 //REGISTER_LAYER_CLASS(LRN);

 extern INSTANTIATE_CLASS(SliceLayer);
 //REGISTER_LAYER_CLASS(Slice);
 //extern INSTANTIATE_CLASS(TanHLayer);
 //REGISTER_LAYER_CLASS(TanH);
 //extern INSTANTIATE_CLASS(AbsValLayer);
 //REGISTER_LAYER_CLASS(AbsVal);*/

}
#endif // !CAFFE_H

其中namespace里面的layer根据自己需要添加。这时还会遇到一个麻烦的问题，添加了REGISTER_LAYER_CLASS（）他会报重复注册，去掉这一句又报不认识这一层。这种问题出现的可能性是你自己封装了一个lib（我的问题就是这样）用来做模型的加载、图像特征提取等等，只需要把这个头文件include到你的库的头文件或者库的cpp文件里面即可。