Here's some more examples of what RMagick can do. Check out these special effects! The next page demonstrates the drawing API. Or, you can go back to the transformations.

require 'RMagick'

clown = Magick::Image.read("clown.jpg").first
cols, rows = clown.columns, clown.rows

clown[:caption] = "Hi!"
clown = clown.polaroid { self.gravity = Magick::CenterGravity }

clown.change_geometry!("#{cols}x#{rows}") do |ncols, nrows, img|
    img.resize!(ncols, nrows)
    end

clown.write('polaroid.png')

require 'RMagick'

clown = Magick::Image.read("clown.jpg")
clown = clown[0].vignette
clown.write('new-vignette.jpg')

require 'RMagick'

clown = Magick::ImageList.new("clown.jpg")
clown = clown.edge(8)
clown.write('edge.jpg')

require 'RMagick'

clown = Magick::ImageList.new("clown.jpg")
clown = clown.emboss
clown.write('emboss.jpg')

require 'RMagick'

clown = Magick::ImageList.new("clown.jpg")
clown = clown.implode(0.4)
clown.write('implode.jpg')

require 'RMagick'

clown = Magick::ImageList.new("clown.jpg")
clown = clown.negate
clown.write('negate.jpg')

require 'RMagick'

clown = Magick::ImageList.new("clown.jpg")
clown = clown.oil_paint
clown.write('oil_paint.jpg')

require 'RMagick'

clown = Magick::ImageList.new("clown.jpg")
clown = clown.spread
clown.write('spread.jpg')

require 'RMagick'

clown = Magick::ImageList.new("clown.jpg")
clown = clown.wave(10, 200)
clown.write('wave.jpg')