# File lib/ramaze/contrib/sequel/image.rb, line 177
    def generate_thumbnails
      FileUtils.mkdir_p(public_path)

      sizes, algorithm = conf.values_at(:sizes, :algorithm)

      ImageScience.with_image(original) do |img|
        Ramaze::Log.debug "Process original: #{original}"

        sizes.each do |name, args|
          out = public_file(name)
          Ramaze::Log.debug "Generate Thumbnail: #{out}"

          img.send(algorithm, *args) do |thumb|
            thumb.save(out)
          end
        end
      end
    end