mirror of
https://github.com/ruby-opencv/ruby-opencv
synced 2023-03-27 23:22:12 -04:00
149 lines
4 KiB
Text
149 lines
4 KiB
Text
= OpenCV
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The initial Open Computer Vision library was originally developed by Intel
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Corporation. Recent development has been headed by Willow Garage, Inc.
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* OpenCV project home http://opencv.willowgarage.com/wiki/
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* Download http://sourceforge.net/projects/opencvlibrary/
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* Ruby/OpenCV original author's web page http://blueruby.mydns.jp/opencv
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== DESCRIPTION:
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OpenCV wrapper for Ruby
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== FEATURES/PROBLEMS:
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* Some OpenCV functions are wrapped.
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* Ruby 1.8.7, 1.9.3 and OpenCV 2.4.0 are supported.
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== DEPENDENCIES:
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* OpenCV (required)
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* Ruby/OpenCV relies on the OpenCV library http://opencv.willowgarage.com/wiki/InstallGuide
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* Microsoft Visual C++ (for mswin32)
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* http://www.microsoft.com/visualstudio/en-us/products/2010-editions/visual-cpp-express
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* MinGW and MSYS (for mingw32)
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* gcc, g++ and MSYS are needed.
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* http://www.mingw.org
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== INSTALLATION:
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=== Install Ruby/OpenCV manually
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==== Unix/Linux/Mac
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$ git clone git://github.com/ruby-opencv/ruby-opencv.git
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$ cd ruby-opencv
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$ git checkout OpenCV_2.4
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$ ruby extconf.rb --with-opencv-dir=/path/to/opencvdir
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$ make
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$ make install
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==== Windows (mswin32)
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Use *nmake* instead of *make*.
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$ git clone git://github.com/ruby-opencv/ruby-opencv.git
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$ cd ruby-opencv
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$ git checkout OpenCV_2.4
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$ ruby extconf.rb --with-opencv-dir=C:\path\to\opencvdir\install # for your own built OpenCV library
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$ nmake
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$ nmake install
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To use pre-built OpenCV libraries, set the following option to extconf.rb.
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$ ruby extconf.rb --with-opencv-include=C:\path\to\opencvdir\build\include --with-opencv-lib=C:\path\to\opencvdir\build\x86\vc10\lib
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==== Windows (mingw32)
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Type the following commands on the *MSYS* *console*.
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$ git clone git://github.com/ruby-opencv/ruby-opencv.git
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$ cd ruby-opencv
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$ git checkout OpenCV_2.4
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$ ruby extconf.rb --with-opencv-dir=/C/path/to/opencvdir/install # for your own built OpenCV library
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$ make
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$ make install
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To use pre-built OpenCV libraries, set the following option to extconf.rb.
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$ ruby extconf.rb --with-opencv-include=/c/path/to/opencvdir/build/include --with-opencv-lib=/c/path/to/opencvdir/build/x86/mingw/lib
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==== NOTE:
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*/path/to/opencvdir* is the path you installs OpenCV library (default: /usr/local).
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For example, if you install OpenCV library to */opt/local/* like:
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$ cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/opt/local/ ./OpenCV-2.4.0-beta2
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$ make
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$ make install
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Install Ruby/OpenCV with the following command:
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$ ruby extconf.rb --with-opencv-dir=/opt/local
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$ make
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$ make install
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=== Create Ruby/OpenCV Gem
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You can also install this library creating a gem like:
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$ git clone git://github.com/ruby-opencv/ruby-opencv.git
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$ cd ruby-opencv
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$ git checkout OpenCV_2.4
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$ bundle install
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$ rake gem
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$ gem install pkg/opencv-*.gem -- --with-opencv-dir=/path/to/opencvdir
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To add ruby-opencv in your Gemfile:
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$ echo -e "\n"'gem "opencv", :git => "https://github.com/ruby-opencv/ruby-opencv"' >> Gemfile
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$ bundle config build.opencv --with-opencv-dir=/path/to/opencvdir
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$ bundle install # or bundle update
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== SYNOPSIS:
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=== Show Image using GUI Component
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#!/usr/bin/env ruby
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require "opencv"
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image = OpenCV::IplImage.load("sample.jpg")
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window = OpenCV::GUI::Window.new("preview")
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window.show(image)
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OpenCV::GUI::wait_key
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=== Face Detection
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Here is a sample face detection program that doesn't rely on the GUI components.
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In order for this to work you must copy the OpenCV haarcascades data into a
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subfolder called data.
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#!/usr/bin/env ruby
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require "opencv"
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if ARGV.length < 2
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puts "Usage: your_app_name source dest"
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exit
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end
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data = "./data/haarcascades/haarcascade_frontalface_alt.xml"
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detector = OpenCV::CvHaarClassifierCascade::load(data)
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image = OpenCV::IplImage.load(ARGV[0])
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detector.detect_objects(image).each do |region|
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color = OpenCV::CvColor::Blue
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image.rectangle! region.top_left, region.bottom_right, :color => color
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end
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image.save_image(ARGV[1])
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For more samples, see examples/*.rb
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== LICENSE:
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The BSD Liscense
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see LICENSE.txt
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