OpenCV (Open Source Computer Vision Library) is an open-source computer vision and machine learning software library. It’s widely used for real-time image processing. If you’ve installed OpenCV on your Ubuntu system, you might be wondering where the installation files are located. The installation location can vary depending on the installation method and the version of OpenCV. In this article, we’ll explore the different locations where OpenCV files might be installed.
The location of OpenCV installation on Ubuntu can vary depending on the installation method and version. If you’ve installed OpenCV using checkinstall and dpkg, you can use the dpkg -L command to check the installed files. If you’ve used a custom script, you can modify it to use checkinstall and check the installed files using dpkg -L opencv. If you’ve installed OpenCV using apt-get, the files will be in the default system path. If you followed a guide, the files might be in /usr/include/opencv and /usr/include/opencv2, but this can vary.
Installation via checkinstall and dpkg
If you’ve installed OpenCV using checkinstall and the dpkg package manager, you can check the installed files by using the dpkg -L command followed by the package name. Here’s an example:
dpkg -L opencv-<version>In this command, <version> should be replaced with the version number of OpenCV you’ve installed. For instance, if you’ve installed OpenCV 2.4.8, the command would be:
dpkg -L opencv-2.4.8This command lists all the files associated with the specified package, in this case, OpenCV.
Installation via Custom Script
If you’ve installed OpenCV using a custom script, you can modify the script to use checkinstall instead of make install. This allows you to create and install a deb package, which you can then check using the dpkg -L command.
First, you need to install checkinstall:
sudo apt-get install checkinstallThen, replace the line make install in the script with sudo checkinstall:
sudo checkinstallAfter modifying the script, run it again. This will create and install a deb package, and you can check the installed files using dpkg -L opencv.
Installation via apt-get
If you’ve installed OpenCV using the apt-get package manager, the files will be installed in the default system path. On Ubuntu, the shared libraries will typically be located in /usr/local/lib and the header files will be located in /usr/local/include/opencv2.
Installation via Guide
If you’ve installed OpenCV 2.4 using a guide, the files should be located in /usr/include/opencv and /usr/include/opencv2. However, it’s worth noting that the guide might not be up to date, and the installation location could vary depending on the version of Ubuntu or OpenCV.
Conclusion
In this article, we’ve explored the different locations where OpenCV might be installed on an Ubuntu system. The installation location can vary depending on the installation method and the version of OpenCV. It’s recommended to check the specific installation method and version to determine the exact location of the installed files.
Remember, understanding where your OpenCV files are installed can be crucial when you’re configuring environments or troubleshooting issues. If you’re still having trouble finding your OpenCV installation, consider reaching out to the OpenCV community for help.
You can check the version of OpenCV installed on your Ubuntu system by running the command pkg-config --modversion opencv. It will display the version number of the installed OpenCV library.
Yes, it is possible to have multiple versions of OpenCV installed on your Ubuntu system. However, it requires careful management of libraries and dependencies to avoid conflicts. It is recommended to use virtual environments or containerization tools like Docker to isolate different versions of OpenCV.
To uninstall OpenCV from your Ubuntu system, you can use the apt-get package manager. Run the command sudo apt-get remove libopencv* to remove all packages related to OpenCV. Additionally, you can also run sudo apt-get autoremove to remove any dependencies that are no longer needed.
Yes, you can install OpenCV from source on Ubuntu. It involves downloading the source code, configuring the build options, compiling, and then installing. However, it is recommended to use the package manager or pre-built binaries whenever possible, as they handle dependencies and updates more efficiently.
The official documentation for OpenCV can be found on the OpenCV website. It provides detailed documentation for each module, along with tutorials and examples. Additionally, there are many online resources, blogs, and forums where you can find tutorials and discussions related to OpenCV.
