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require 'RMagick'
module Magick
class Image
# Print information similar to the identify -verbose command
def identify
printf "Image: "
puts "#{base_filename}=>" if base_filename != filename
puts filename + "\n"
puts "\tFormat: #{format}\n"
puts "\tGeometry: #{columns}x#{rows}\n"
puts "\tClass: #{class_type.to_s}\n"
puts "\tType: #{image_type.to_s}\n"
puts "\tEndianess: #{endian}\n"
puts "\tColorspace: #{colorspace}\n"
puts "\tChannelDepth:\n"
color_space = gray? ? Magick::GrayColorspace : colorspace
case color_space
when Magick::RGBColorspace
puts "\t\tRed: #{channel_depth(Magick::RedChannel)}-bits\n"
puts "\t\tGreen: #{channel_depth(Magick::GreenChannel)}-bits\n"
puts "\t\tBlue: #{channel_depth(Magick::BlueChannel)}-bits\n"
puts "\t\tOpacity: #{channel_depth(Magick::OpacityChannel)}-bits\n" if matte
when Magick::CMYKColorspace
puts "\t\tCyan : #{channel_depth(Magick::CyanChannel)}-bits\n"
puts "\t\tMagenta: #{channel_depth(Magick::MagentaChannel)}-bits\n"
puts "\t\tYellow: #{channel_depth(Magick::YellowChannel)}-bits\n"
puts "\t\tBlack: #{channel_depth(Magick::BlackChannel)}-bits\n"
puts "\t\tOpacity: #{channel_depth(Magick::OpacityChannel)}-bits\n" if matte
when Magick::GrayColorspace
puts "\t\tGray: #{channel_depth(Magick::GrayChannel)}-bits\n"
puts "\t\tOpacity: #{channel_depth(Magick::OpacityChannel)}-bits\n" if matte
end
scale = Magick::QuantumRange / (Magick::QuantumRange >> (Magick::QuantumDepth-channel_depth))
puts "\tChannel statistics:\n"
case color_space
when Magick::RGBColorspace
puts "\t\tRed:\n"
puts "\t\t\tMin: " + sprintf("%u (%g)\n", channel_extrema(Magick::RedChannel)[0]/scale, channel_extrema(Magick::RedChannel)[0]/Magick::QuantumRange)
puts "\t\t\tMax: " + sprintf("%u (%g)\n", channel_extrema(Magick::RedChannel)[1]/scale, channel_extrema(Magick::RedChannel)[1]/Magick::QuantumRange)
puts "\t\t\tMean: " + sprintf("%g (%g)\n", channel_mean(Magick::RedChannel)[0]/scale, channel_mean(Magick::RedChannel)[0]/Magick::QuantumRange)
puts "\t\t\tStandard deviation: " + sprintf("%g (%g)\n", channel_mean(Magick::RedChannel)[1]/scale, channel_mean(Magick::RedChannel)[1]/Magick::QuantumRange)
puts "\t\tGreen:\n"
puts "\t\t\tMin: " + sprintf("%u (%g)\n", channel_extrema(Magick::GreenChannel)[0]/scale, channel_extrema(Magick::GreenChannel)[0]/Magick::QuantumRange)
puts "\t\t\tMax: " + sprintf("%u (%g)\n", channel_extrema(Magick::GreenChannel)[1]/scale, channel_extrema(Magick::GreenChannel)[1]/Magick::QuantumRange)
puts "\t\t\tMean: " + sprintf("%g (%g)\n", channel_mean(Magick::GreenChannel)[0]/scale, channel_mean(Magick::GreenChannel)[0]/Magick::QuantumRange)
puts "\t\t\tStandard deviation: " + sprintf("%g (%g)\n", channel_mean(Magick::GreenChannel)[1]/scale, channel_mean(Magick::GreenChannel)[1]/Magick::QuantumRange)
puts "\t\tBlue:\n"
puts "\t\t\tMin: " + sprintf("%u (%g)\n", channel_extrema(Magick::BlueChannel)[0]/scale, channel_extrema(Magick::BlueChannel)[0]/Magick::QuantumRange)
puts "\t\t\tMax: " + sprintf("%u (%g)\n", channel_extrema(Magick::BlueChannel)[1]/scale, channel_extrema(Magick::BlueChannel)[1]/Magick::QuantumRange)
puts "\t\t\tMean: " + sprintf("%g (%g)\n", channel_mean(Magick::BlueChannel)[0]/scale, channel_mean(Magick::BlueChannel)[0]/Magick::QuantumRange)
puts "\t\t\tStandard deviation: " + sprintf("%g (%g)\n", channel_mean(Magick::BlueChannel)[1]/scale, channel_mean(Magick::BlueChannel)[1]/Magick::QuantumRange)
when Magick::CMYKColorspace
puts "\t\tCyan:\n"
puts "\t\t\tMin: " + sprintf("%u (%g)\n", channel_extrema(Magick::CyanChannel)[0]/scale, channel_extrema(Magick::CyanChannel)[0]/Magick::QuantumRange)
puts "\t\t\tMax: " + sprintf("%u (%g)\n", channel_extrema(Magick::CyanChannel)[1]/scale, channel_extrema(Magick::CyanChannel)[1]/Magick::QuantumRange)
puts "\t\t\tMean: " + sprintf("%g (%g)\n", channel_mean(Magick::CyanChannel)[0]/scale, channel_mean(Magick::CyanChannel)[0]/Magick::QuantumRange)
puts "\t\t\tStandard deviation: " + sprintf("%g (%g)\n", channel_mean(Magick::CyanChannel)[1]/scale, channel_mean(Magick::CyanChannel)[1]/Magick::QuantumRange)
puts "\t\tMagenta:\n"
puts "\t\t\tMin: " + sprintf("%u (%g)\n", channel_extrema(Magick::MagentaChannel)[0]/scale, channel_extrema(Magick::MagentaChannel)[0]/Magick::QuantumRange)
puts "\t\t\tMax: " + sprintf("%u (%g)\n", channel_extrema(Magick::MagentaChannel)[1]/scale, channel_extrema(Magick::MagentaChannel)[1]/Magick::QuantumRange)
puts "\t\t\tMean: " + sprintf("%g (%g)\n", channel_mean(Magick::MagentaChannel)[0]/scale, channel_mean(Magick::MagentaChannel)[0]/Magick::QuantumRange)
puts "\t\t\tStandard deviation: " + sprintf("%g (%g)\n", channel_mean(Magick::MagentaChannel)[1]/scale, channel_mean(Magick::MagentaChannel)[1]/Magick::QuantumRange)
puts "\t\tYellow:\n"
puts "\t\t\tMin: " + sprintf("%u (%g)\n", channel_extrema(Magick::YellowChannel)[0]/scale, channel_extrema(Magick::YellowChannel)[0]/Magick::QuantumRange)
puts "\t\t\tMax: " + sprintf("%u (%g)\n", channel_extrema(Magick::YellowChannel)[1]/scale, channel_extrema(Magick::YellowChannel)[1]/Magick::QuantumRange)
puts "\t\t\tMean: " + sprintf("%g (%g)\n", channel_mean(Magick::YellowChannel)[0]/scale, channel_mean(Magick::YellowChannel)[0]/Magick::QuantumRange)
puts "\t\t\tStandard deviation: " + sprintf("%g (%g)\n", channel_mean(Magick::YellowChannel)[1]/scale, channel_mean(Magick::YellowChannel)[1]/Magick::QuantumRange)
puts "\t\tBlack:\n"
puts "\t\t\tMin: " + sprintf("%u (%g)\n", channel_extrema(Magick::BlackChannel)[0]/scale, channel_extrema(Magick::BlackChannel)[0]/Magick::QuantumRange)
puts "\t\t\tMax: " + sprintf("%u (%g)\n", channel_extrema(Magick::BlackChannel)[1]/scale, channel_extrema(Magick::BlackChannel)[1]/Magick::QuantumRange)
puts "\t\t\tMean: " + sprintf("%g (%g)\n", channel_mean(Magick::BlackChannel)[0]/scale, channel_mean(Magick::BlackChannel)[0]/Magick::QuantumRange)
puts "\t\t\tStandard deviation: " + sprintf("%g (%g)\n", channel_mean(Magick::BlackChannel)[1]/scale, channel_mean(Magick::BlackChannel)[1]/Magick::QuantumRange)
when Magick::GrayColorspace
puts "\t\tGray:\n"
puts "\t\t\tMin: " + sprintf("%u (%g)\n", channel_extrema(Magick::GrayChannel)[0]/scale, channel_extrema(Magick::GrayChannel)[0]/Magick::QuantumRange)
puts "\t\t\tMax: " + sprintf("%u (%g)\n", channel_extrema(Magick::GrayChannel)[1]/scale, channel_extrema(Magick::GrayChannel)[1]/Magick::QuantumRange)
puts "\t\t\tMean: " + sprintf("%g (%g)\n", channel_mean(Magick::GrayChannel)[0]/scale, channel_mean(Magick::GrayChannel)[0]/Magick::QuantumRange)
puts "\t\t\tStandard deviation: " + sprintf("%g (%g)\n", channel_mean(Magick::GrayChannel)[1]/scale, channel_mean(Magick::GrayChannel)[1]/Magick::QuantumRange)
end
if matte
puts "\t\tOpacity:\n"
puts "\t\t\tMin: " + sprintf("%u (%g)\n", channel_extrema(Magick::OpacityChannel)[0]/scale, channel_extrema(Magick::OpacityChannel)[0]/Magick::QuantumRange)
puts "\t\t\tMax: " + sprintf("%u (%g)\n", channel_extrema(Magick::OpacityChannel)[1]/scale, channel_extrema(Magick::OpacityChannel)[1]/Magick::QuantumRange)
puts "\t\t\tMean:" + sprintf("%u (%g)\n", channel_mean(Magick::OpacityChannel)[0]/scale, channel_mean(Magick::OpacityChannel)[0]/Magick::QuantumRange)
puts "\t\t\tStandard deviation:" + sprintf("%u (%g)\n", channel_mean(Magick::OpacityChannel)[1]/scale, channel_mean(Magick::OpacityChannel)[1]/Magick::QuantumRange)
end
if class_type == Magick::DirectClass
puts "\tColors: #{total_colors}\n"
else
if total_colors <= colors
puts "\tColors: #{colors}\n"
else
puts "\tColors: #{total_colors}=>#{colors}\n"
end
end
# Histogram goes here
puts "\tMean error per pixel: #{mean_error_per_pixel}\n" if mean_error_per_pixel != 0.0
puts "\tNormalized mean error: #{normalized_mean_error}\n" if normalized_mean_error != 0.0
puts "\tNormalized maximum error: #{normalized_maximum_error}\n" if normalized_maximum_error != 0.0
puts "\tRendering-intent: #{rendering_intent.to_s}\n"
puts "\tGamma: #{gamma}\n" if gamma != 0.0
chrom = chromaticity
if chrom.red_primary.x != 0.0 || chrom.green_primary.x != 0.0 || chrom.blue_primary.x != 0.0 || chrom.white_point.x != 0.0
puts "\tChromaticity:\n"
puts "\t\tred primary: (#{sprintf("%g,%g", chrom.red_primary.x, chrom.red_primary.y)})\n"
puts "\t\tgreen primary: (#{sprintf("%g,%g", chrom.green_primary.x, chrom.green_primary.y)})\n"
puts "\t\tblue primary: (#{sprintf("%g,%g", chrom.blue_primary.x, chrom.blue_primary.y)})\n"
puts "\t\twhite point: (#{sprintf("%g,%g", chrom.white_point.x, chrom.white_point.y)})\n"
end
ex_info = extract_info
if ex_info.width * ex_info.height != 0.0
puts "\tTile geometry: #{ex_info.width}x#{ex_info.height}+#{ex_info.x}+#{ex_info.y}\n"
end
if x_resolution != 0.0 && y_resolution != 0.0
puts "\tResolution: #{sprintf("%gx%g", x_resolution, y_resolution)}\n"
end
puts "\tUnits: #{units.to_s}\n"
size = filesize
if size >= 1048576
puts "\tFilesize: #{"%.1f" % (size/1048576.0)}mb\n"
elsif size >= 1024
puts "\tFilesize: #{"%.0f" % (size/1024.0)}kb\n"
else
puts "\tFilesize: #{size}b\n"
end
puts "\tInterlace: #{interlace.to_s}\n"
puts "\tBackground Color: #{background_color}\n"
puts "\tBorder Color: #{border_color}\n"
puts "\tMatte Color: #{matte_color}\n"
pg = page
if pg.width != 0 || pg.height != 0 || pg.x != 0 || pg.y != 0
puts "\tPage geometry: #{pg.width}x#{pg.height}+#{pg.x}+#{pg.y}\n"
end
puts "\tDispose: #{dispose.to_s}\n"
puts "\tDelay: #{delay}\n" if delay != 0
puts "\tIterations: #{iterations}\n" unless iterations == 1
puts "\tScene: #{scene}\n" if scene != 0
puts "\tCompression: #{compression.to_s}\n"
puts "\tQuality: #{quality}\n" unless quality == 0
puts "\tOrientation: #{orientation.to_s}\n"
puts "\tMontage: #{montage}\n" if montage
signature # compute but ignore - will be displayed along with the other properties
properties.each do |prop, value|
next if prop[0,1] == '['
puts "\t#{prop}: #{value}\n"
end
clip_path = self["8BIM:1999,2998:#1"]
if clip_path
puts "\tClipping path: #{clip_path}\n"
end
each_profile do |name, value|
puts "\tProfile-#{name}: #{value.length}\n"
if name == 'exif'
exif_attrs = get_exif_by_entry
exif_attrs.each do |attr|
puts "\t\t#{attr[0]}: #{attr[1]}\n"
end
end
end
puts "\tTainted: True\n" if changed?
puts "\tTainted: False\n" unless changed?
puts "\tVersion: #{Magick::Version}\n"
puts "\t #{Magick::Magick_version}\n"
end
end
end
if ARGV.length == 0
puts <<-'END_USAGE'
This example displays information about the specified image file(s)
that is similar to ImageMagick/GraphicsMagick's identify command.
Usage:
ruby identify.rb filename [filename...]
END_USAGE
exit
end
ilist = Magick::ImageList.new(*ARGV)
ilist.each do |img|
img.identify
end
exit
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