[C++] VS configuration OpenCV/Libtorch environment

foreword

This article is a note from the video https://www.bilibili.com/video/BV1dp4y177L4 .

OpenCV and Libtorch installation package: https://pan.baidu.com/s/1i3DqTcHFSC1rRDsIgYGCsQ?pwd=8888

VS version: 2019
Opencv version: 3.4.1
Libtorch version: 2.0.1+cu117

Configure the OpenCV environment

1. Open VS and create a console application.

2. In the view, bring up the property manager.

3. In the property manager, select the property of Debug|x64.

4. Add the OpenCV path in the include directory, here I am E:\C_Libiary\opencv3.41\build\includeandE:\C_Libiary\opencv3.41\build\include\opencv2

5. Add library directoryE:\C_Libiary\opencv3.41\build\x64\vc15\lib

6. Additional dependencies addedopencv_world341d.lib

7. Add environment variablesE:\C_Libiary\opencv3.41\build\x64\vc15\bin

8. Copy the three dll files in the bin directory to C:\Windows\System32the path

9. Place a picture under the cpp file and call the following code for testing

#include <iostream>
#include <opencv2/opencv.hpp>

using namespace cv;
using namespace std;

int main()
{
    
    
    Mat src = imread("1.png"); /*图片 */
    imshow("input", src);
    waitKey(0);
    return 0;
}

Successfully opened, indicating that the OpenCV environment configuration is successful.

Configure the Libtorch environment

1. Add the path of Libtorch in the include directory, here I am E:\C_Libiary\libtorch\include\torch\csrc\api\includeandE:\C_Libiary\libtorch\include

2. Add the library directory, the path isE:\C_Libiary\libtorch\lib

3. Add the following content in the dependencies (some lib files under the Libtorch folder, different versions of Libtorch will be slightly different)

asmjit.lib
c10.lib
c10_cuda.lib
caffe2_nvrtc.lib
clog.lib
cpuinfo.lib
dnnl.lib
fbgemm.lib
fbjni.lib
kineto.lib
libprotobuf.lib
libprotobuf-lite.lib
libprotoc.lib
nvfuser_codegen.lib
pthreadpool.lib
pytorch_jni.lib
torch.lib
torch_cpu.lib
torch_cuda.lib
XNNPACK.lib

4, add environmentPATH=E:\C_Libiary\libtorch\lib;%PATH%

5. Copy all dll files to C:\Windows\System32the path

6. Enter the following code to test

#include<torch/torch.h>
#include<torch/script.h>

using namespace torch;
using namespace std;


int main() {
    
    
	Tensor tensor = torch::rand({
    
     1,2,3 });
	cout << tensor.sizes() << endl;   //方式一，只打印维度信息
	tensor.print();    //方式二，除了打印维度信息，数据类型也打印出来
	return 0;
}

If it runs successfully, the configuration is successful.