** THIS GEM/REPO IS NO LONGER MAINTAINED **

The last release of the opencv gem was on July 25th, 2009: rubygems.org/gems/opencv/versions/0.0.7

Please use an alternative OpenCV wrapper, such as ruby-opencv: github.com/ruby-opencv/ruby-opencv/

OpenCV

The initial Open Computer Vision library was originally developed by Intel Corporation. Recent development has been headed by Willow Garage, Inc.

OpenCV Sourceforge Project opencv.willowgarage.com/wiki/

Sourceforge sourceforge.net/projects/opencvlibrary/

Ruby/OpenCV Author’s Web Page blueruby.mydns.jp/opencv

DESCRIPTION:

OpenCV Ruby Wrapper

FEATURES/PROBLEMS:

• First release rubygems, Some OpenCV functions wrapped.

• Ruby 1.8.7, 1.9.2 and OpenCV 2.2 are supported.

• Mouse interaction often causes segfaults on my Ubuntu 10.10 (Ruby 1.9.2).

DEPENDENCIES:

This library relies on the OpenCV project. The following page shows how to install it:

opencv.willowgarage.com/wiki/InstallGuide

INSTALLATION:

You can install by cloning this repository:

git clone git://github.com/ser1zw/ruby-opencv.git

Then inside the ruby-opencv folder run:

rakeinstall_gem

You can also add ruby-opencv in your Gemfile:

echo -e "\n"'gem "opencv", :git => "https://github.com/pcting/ruby-opencv"' >> Gemfile
bundle install # or bundle update

SYNOPSIS:

Once installed it is possible to show images via GUI Window.

require"opencv"image = OpenCV::IplImage.load("sample.jpg")
window = OpenCV::GUI::Window.new("preview")
window.show(image)
OpenCV::GUI::wait_key

For more samples, see examples/*.rb

FACE DETECTION:

Here is a sample face detection program that doesn’t rely on the GUI components. In order for this to work you must copy the OpenCV haarcascades data into a subfolder called data.

#!/usr/bin/env rubyrequire"opencv"ifARGV.length<2puts"Usage: your_app_name source dest"exitenddata = "./data/haarcascades/haarcascade_frontalface_alt.xml"detector = OpenCV::CvHaarClassifierCascade::load(data)
image = OpenCV::IplImage.load(ARGV[0])
detector.detect_objects(image) do|region|color = OpenCV::CvColor::Blueimage.rectangle!region.top_left, region.bottom_right, :color=>colorendimage.save_image(ARGV[1])

REQUIREMENTS:

• OpenCV 2.2 or later opencv.willowgarage.com/wiki/

• ffcall (optional) www.haible.de/bruno/packages-ffcall.html

LICENSE:

The BSD Liscense

see LICENSE.txt