Choose “Add External Jars”, then press command+shift+G to get a popup that says “Go to folder”. Type “OpenCV 3.0.0” to return to the “User Libraries” window. Choose a project and open Properties > Java Build Path > Libraries > Add Library > User Library > User Libraries > New. The native library does OSX-specific stuff way way down near the machine level in specific ways that only OSX demands.

Basically the jar file explains to Java how to use the native library.

Next, we’re going to set up a User Library, which comes in two parts: a jar file and a native library location. When it’s finally done (it’s done!) the Java files will be in /usr/local/Cellar/opencv3/3.0.0/share/OpenCV/java/opencv-300.jar …then I started wondering if it was stuck in a loop… Then I got myself a snack and made dinner while it downloaded and installed everything needed. Note that several tutorials suggested “brew install opencv” without the ‘3’, which no longer works. After a few moments installing, I then typed brew tap homebrew/science Homebrew is “the missing package manager for OSX.” I followed their instructions and copied this line: ruby -e '$(curl -fsSL )' If you follow my steps you should be able to install OpenCV and start experimenting with advanced robotic vision systems. Slightly less stupid robots can look in the world and correct their movements based on what they see.Īs I do most of my development on my ancient 17″ Apple laptop in Java, I need OpenCV to play nice with Eclipse. Stupid robots expect everything to be perfect all the time. The EM needs to be able to understand what it seems in order to do more kinds of work. I need OpenCV working for the Evil Overlord and Evil Minion. It can be as simple as finding a colored shape or a checkerboard, and as a complex as recognizing a face. OpenCV is a library that helps computers understand what they’re looking at. *my results as of, your mileage may vary. Take my experience for free, because I love you, friend I haven’t met yet.* I’m here today to tell you how to avoid these pitfalls. They will lead you astray down dark and complicated alleys that dead end where no one can hear you scream. There are many tutorials online, most of them out of date. OpenCV in Java is good, and on OSX is even better.

Download java for mac 10.10.1