Installing ImageMagick, mini-magick and rmagick on Mac OS X Leopard
I had no success installing ImageMagick and mini-magick with the instructions I found on this page but after some googling I found this blog post, which had the magic commands that worked for me:
sudo port install tiff -macosx #disables the linkage with Apple's open gl
sudo port install ImageMagick
sudo gem install rmagick
sudo gem install mini_magick
To test mini-magick, open an irb console and paste in the following code:
require 'rubygems'
require 'mini_magick'
path = "public/images/0000/0003/logo.jpg"
image = MiniMagick::Image.new(path)
#print width and height
puts image[:width]
puts image[:height]