#!/usr/bin/ruby -w require 'RMagick' # Demonstrate the Image#enhance method img = Magick::Image.read('images/Flower_Hat.jpg').first eimg = img.unsharp_mask(3.0, 1.0, 1.0, 0.05) img.resize!(3) eimg.resize!(3) # Make a before-and-after composite eimg.crop!(eimg.columns/2, 0, eimg.columns/2, eimg.rows) img = img.composite(eimg, Magick::EastGravity, Magick::OverCompositeOp) # Draw a black line between the before and after parts. line = Magick::Draw.new line.line(img.columns/2, 0, img.columns/2, img.rows) line.draw(img) # Zoom in so we can see the change, # then crop everything but the face. img.crop!(Magick::CenterGravity, 250, 200) #img.display img.write('unsharp_mask.jpg') exit