How can I install opencv2 with brew under OSX

Question

Recently, I installed opencv with the following command:

brew install opencv

I found opencv3 was installed in dir /usr/include and /usr/lib. But what I want is opencv2. How can install opencv2 with the brew command?

Answer 1

The easiest way to find the answer is to use brew search to look for available packages. So, in your case:

brew search opencv

There you will see the package opencv@2 listed. So, you need:

brew install opencv@2

Answer 2

I can't give you a answer in context of using brew but I can assist you with a valuable resource that really helped me out when I was first started out with OpenCV that got me up and developing https://www.youtube.com/watch?v=U49CVY8yOxw

1. Install Xcode , Install C-Make

2. Download OpenCV source code https://github.com/opencv/opencv/releases/tag/3.1.0

3. Build and install!

INSTRUCTIONS: Go inside OpenCV once downloaded create new folder called build. Next, open CMake GUI find the directory we just created " build " to build the binaries, Click configure, Select "Unix Makefiles" and use native default compilers. cd into out build directory in our OpenCV folder so something like this /Users/you/Desktop/openCvFolder/build and run the command "make" and go have a coffee! I hope this helps it helped me out when I first started experimenting a year ago with OpenCV