Problems encountered in the use of Caffe

1:fatal error:caffe/proto/caffe.pb.h:no such file or directory
Workaround: Generate Caffe.pb.h and caffe.pb.cc from Caffe/src/caffe/proto/caffe.proto with Protoc
into the Caffe root directory, enter the command:

  Protoc Src/caffe/proto/caffe.proto--cpp_out=.
  mkdir include/caffe/proto
  MV Src/caffe/proto/caffe.pb.h Include/caffe/proto

It's no problem to call again.

2:error: ' Class Caffe::memorydatalayer ' has no member named ' Addmatvector '
Error: ' Cvmattodatum ' is not ' a ' caffe '
This error was reported when loading data into the network using Memorydata because the "USE_OPENCV" was not declared. Looking at memory_data_layer.hpp and io.hpp, you can see that it explicitly contains functions Addmatvector and cvmattodatum, but you need to declare USE_OPENCV before they are visible:

#ifdef USE_OPENCV
  virtual void addmatvector (const vector<cv::mat>& mat_vector,
      const VECTOR<INT >& labels);
#endif  //USE_OPENCV

#ifdef USE_OPENCV
cv::mat readimagetocvmat (const string& filename,
    const int height, const int width, const b Ool Is_color);

Cv::mat Readimagetocvmat (const string& filename,
    const int height, const int width);

Cv::mat Readimagetocvmat (const string& filename,
    const bool is_color);

Cv::mat Readimagetocvmat (const string& filename);

Cv::mat decodedatumtocvmatnative (const datum& Datum);
Cv::mat Decodedatumtocvmat (const datum& Datum, bool is_color);

void Cvmattodatum (const cv::mat& cv_img, datum* Datum);
#endif  //USE_OPENCV

Workaround: First of all, confirm that when compiling Caffe, the Makefile.config contains the OpenCV module, namely:

# Uncomment if you ' re using OpenCV 3
  opencv_version: = 3

and comment out Use_opencv: = 0:

# Use_opencv: = 0

Second, when you include file memory_data_layer.hpp or IO.HPP, you explicitly declare the macro definition USE_OPENCV above the caller, for example:

#ifndef USE_OPENCV
#define USE_OPENCV
#include <caffe/caffe.hpp>  
#include <caffe/layers/ memory_data_layer.hpp>
#include <caffe/util/io.hpp>
#endif

Compile again and solve the problem.