OpenCV Sourceforge Project sourceforge.net/projects/opencvlibrary/
Ruby/OpenCV Author’s Web Page blueruby.mydns.jp/opencv
OpenCV Ruby Wrapper
First release rubygems, Some OpenCV function wrapped.
Use of Carbon windows on Mac OS X is a little buggy, especially when called from the command line.
Mouse interaction often causes segfaults on my Mac OS X (ruby 1.8.7).
Sadly, use of X Windows as an alternative on Mac OS X is similarly buggy.
OpenCV 1.0 or later. sourceforge.net/projects/opencvlibrary/
OpenCV has several dependencies, see INSTALLATION INSTRUCTIONS below
ffcall (optional) www.haible.de/bruno/packages-ffcall.html
OpenCV is a requirement. Unfortunately there’s a bug in the code that affects our ability to use Carbon windows, so we can’t install from a port. We’ll have to install from source.
First, these are the dependencies we’ll need:
atk
pango
jpeg
tiff
libpng
pkgconfig
gtk2
glib2
ffcall
Use ports to install them:
$ sudo port install atk $ sudo port install glib2 $ sudo port install pango $ sudo port install jpeg $ sudo port install tiff $ sudo port install libpng $ sudo port install pkgconfig $ sudo port install gtk2 $ sudo port install ffcall
Ports is going to install them in /opt/local, which is where this gem will go looking for ffcall, so that will work well for us.
Next, download version 1.1pre1 of the opencv-linux package here: sourceforge.net/project/showfiles.php?group_id=22870
Navigate to where you downloaded it and:
tar xzvf opencv-1.1pre1.tar.gz cd opencv-1.1.0/
Important: Before we configure and build, we need to fix a small bug in the code. Open up the file otherlibs/highgui/window_carbon.cpp in a text editor and make this change to line 645:
returnNULL;
should be changed to
returnresult;
(This bug is tracked in sourceforge here: sourceforge.net/tracker/index.php?func=detail&aid=2668857&group_id=22870&atid=376677)
Now save the file, and we can run configure:
./configure --with-carbon=yes CPPFLAGS="-I/opt/local/include -I/usr/include/malloc" LDFLAGS=-L/opt/local/lib
After configure runs, it will print out a display showing which libraries are in use. Double-check that the windowing system is using “Carbon/Mac OS X” and not gtk.
Finish installing:
makesudomakeinstall
The last of the output from the install command will probably complain about not being able to find ldconfig. That’s fine. You’re on a Mac; you don’t need ldconfig (macosx.com/forums/mac-os-x-system-mac-software/5200-ldconfig.html).
Now install the gem
sudogeminstallbantic-ruby-opencv
Check your work:
$ irb irb> require 'rubygems' => true irb> require 'opencv' => true
# Show image via GUI Window.
require"rubygems"require"opencv"image = OpenCV::IplImage.load("sample.jpg") window = OpenCV::GUI::Window.new("preview") window.show(image) OpenCV::GUI::wait_key
# other sample code, see examples/*.rb
Documentation is available here: doc.blueruby.mydns.jp/opencv/
The BSD Liscense
see LICENSE.txt