GPU accelerated opencv Library & reconfigure and generate opencv CUDA version using cmake and vs2019

Environmental statement ：

CUDA: 11.3

CUDNN: 11.3

Opencv: 4.1.0

Opencv-contrib: 4.1.0

cmake: 3.14.4

visual studio 2019（ Community Edition ）

Catalog

One 、 Environmental installation ：

Two 、cmake Reconfiguration Opencv

3、 ... and 、VS2019 Generate Opencv-cuda Version Library

Four 、 To configure Opencv Environmental Science

5、 ... and 、cmake Configure and run C++ Encountered during the program BUG

（1） problem 1：CUDA_nppicom_LIBRARY (ADVANCED), Can't find opencv_contrib-4.1.0/modules Documents in ？

（2） problem 2： function demo The program , error  MSB8020  Unable to find  v143  Generation tools for ( Platform toolset  =“v143”) ？

One 、 Environmental installation ：

Briefly describe the environment of this article ：（ Because everyone's environment is basically different ）

（1）CUDA Download link ：CUDA Toolkit - Free Tools and Training | NVIDIA Developer

（2）CUDNN Download link ：CUDA Deep Neural Network (cuDNN) | NVIDIA Developer 

（3）Opencv and Opencv-contrib from Github Download on the official website

• Release OpenCV 4.1.0,Opencv download opencv-4.1.0-vc14_vc15.exe Program .
• Release Oopencv_contrib 4.1.0,Opencv-contrib download zip Compress the package file .

（4）cmake Download link ：Index of /files/v3.14 (cmake.org), download cmake-3.14.4-win64-x64.msi after , Double click Install , During installation , Select automatic environment configuration , And generate desktop icons .

Two 、cmake Reconfiguration Opencv

1. Click on Configure, After completion , Click on Generate
2. selection WITH_CUDA and BUILD_CUDA_STUBS
3. To configure OPENCV_EXTRA_MUDULE_PATH >>> .../opencv_contrib-4.1.0/modules
4. After completion , Click again on the Generate

Screenshot of configuration completion ：

3、 ... and 、VS2019 Generate Opencv-cuda Version Library

1. And then the next step , Click on Opencv Project, Automatically in VS Open this solution in .
2. Right click on the ALL_BUILD, Then click generate （ need 1-2 Hours ）
3. Right click... Again INSTALL , Then click generate （ need 1-2 Hours ）

Four 、 To configure Opencv Environmental Science

Reconfigured path , A new generation Install Folder , That is, the newly generated Opencv-cuda Environmental Science .

See my other blog for specific operations ：

C++ To configure opencv Environmental Science , And realize the operation of basic statements _Flying Bulldog The blog of -CSDN Blog _c++ To configure opencvDemo success need 5 Step （1）opencv Download directly from the official website : https://sourceforge.net/projects/opencvlibrary/files/ It is recommended to download opencv-3.4.16-vc14_vc15.exe（ because 4.5 The version may report an error , As shown in the figure below ）（2） install opencv, My installation path ：G:\c++_machine_learning\（3） Configure the computer system environment ：G:\c++_machine_learning\opencv\build\x64\vc15\bin（4https://blog.csdn.net/qq_54185421/article/details/124218285

because lib There are dozens of files , Copying the past is troublesome , Therefore, a simple configuration is provided Linker>>>input>>>Additional Dependencies The technique of , As shown below ：

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5、 ... and 、cmake Configure and run C++ Encountered during the program BUG

（1） problem 1：CUDA_nppicom_LIBRARY (ADVANCED), Can't find opencv_contrib-4.1.0/modules Documents in ？

terms of settlement ： change cmake Documents in , because CUDA Because of the version .

Reference link ：a.  official ,b. Release OpenCV 4.1.0, After investigation , Official solutions are more useful ！

File path ：/cmake-3.14/Modules/FindCUDA.cmake, The screenshot of the changed file content is as follows ：

​

（2） problem 2： function demo The program , error  MSB8020  Unable to find  v143  Generation tools for ( Platform toolset  =“v143”) ？

terms of settlement ： In Solution Explorer , Right click the project root directory , Then click ： Configuration properties >>> routine >>>Visual Studio 2019 (v142), If it still doesn't work , Just arrive Visual Studio Installer Download v143 Components .

>>> nudges , Experience is the most valuable , I hope it helped you .