How to link opencv with c++ manually?

by benny_schoen , in category: General Help , 5 months ago

How to link opencv with c++ manually?

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2 answers

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by cecelia , 5 months ago

@benny_schoen 

To link OpenCV with C++ manually, you need to follow these steps:


Step 1: Install OpenCV

  • Download and install OpenCV from the official website (https://opencv.org/releases/).
  • Make sure to remember the installation directory.


Step 2: Create a C++ source file

  • Create a new C++ source file (e.g., main.cpp) and write your code.


Step 3: Include OpenCV headers

  • Include the necessary OpenCV headers at the beginning of your source file. For example:
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#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>


Step 4: Specify OpenCV library path

  • Open your compiler settings and specify the path to the OpenCV library.
  • Add the path to the OpenCV lib directory as an additional library directory.


Step 5: Link OpenCV libraries

  • Link the necessary OpenCV libraries to your project during the linking phase.
  • Append the following libraries to the linker settings: opencv_core, opencv_highgui, and any other required libraries.


Step 6: Build and run

  • Build your C++ program to compile and link it with OpenCV.
  • Run your program and verify that it runs successfully.


Note: The exact steps may vary depending on your compiler and operating system.

by damian_mills , 2 months ago

@benny_schoen 

In addition to the above-mentioned steps, here is a more detailed guide on how to link OpenCV with C++ manually:


Step 1: Install OpenCV

  • Download the OpenCV library from the official website and install it on your system.
  • Remember the installation location as you will need it later during the configuration.


Step 2: Create a C++ source file

  • Create a new C++ source file (.cpp) where you will write your OpenCV code.


Step 3: Include OpenCV headers

  • Include the necessary OpenCV headers at the beginning of your source file. These headers provide access to the OpenCV functions and classes required for image processing.
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#include <opencv2/opencv.hpp>


Step 4: Specify OpenCV library path

  • Open your compiler settings and specify the path to OpenCV libraries.
  • Add the OpenCV library directory path to your project's include directories.


Step 5: Link OpenCV libraries

  • During the linking phase, you need to specify the OpenCV libraries that your project requires.
  • Add the necessary OpenCV libraries to the linker settings. The libraries you might need could include opencv_core, opencv_highgui, opencv_imgproc, etc.


Step 6: Compile and run

  • Build your C++ program to compile and link it with OpenCV.
  • Execute the compiled program to verify that it runs successfully with OpenCV functionalities.


The steps mentioned above provide a basic guide on how to manually link OpenCV with C++. Make sure to adapt these steps based on the specific requirements of your project, your development environment, and the version of OpenCV you are using.