(Japanese version is here.) Introduction Ruby/OpenCV is a wrapper of OpenCV (a computer vision programming library) for Ruby. It helps you to write computer vision programs (e.g. detecting faces from an image) with Ruby. There, I'll show you how to install it and use it. Environment Ruby 1.8.7 (Ruby/OpenCV does not support 1.9) Ruby/OpenCV (forked by Jeff Rafter) The original does not support curr