How to link opencv with c++ manually?

@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.

@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.