henrik/README.markdown

## README.markdown

      
    Raw
  

              README.markdown
            
          
    Dezoomify

Ruby + ImageMagick script to stitch Zoomify Viewer tiles into a single image at the maximum zoom level.
Usage

Give the URL of a page that contains the Zoomify Flash viewer, e.g.:
./dezoomify.rb 'http://www.christies.com/lotfinder/ZoomImage.aspx?image=/LotFinderImages/D52792/D5279274'

The file would end up in /tmp/zoomified-0.0.jpg on Mac/*UX and C:\WINDOWS\Temp\zoomified-0.0.jpg on Windows. (The script has yet to be confirmed to work on Windows.)
You can give multiple URLs as separate arguments:
./dezoomify.rb 'http://collections.frick.org/CUS.18.zoomobject._580$7286*1484740' 'http://collections.frick.org/CUS.18.zoomobject._1106$8983*1484996' 'http://collections.frick.org/CUS.18.zoomobject._1105$7286*1516394'

The files would end up in /tmp/zoomified-0.0.jpg, /tmp/zoomified-1.0.jpg and /tmp/zoomified-2.0.jpg or the equivalent Windows directory.
The first number in the output filename reflects the ordinal of the provided URL. The second number is used if a single URL contains multiple Zoomify viewers.
Note that filenames do not increment from run to run, so beware of overwriting previously dezoomified files.
If you're on OS X, each file will be revealed in the Finder as download and stitching is completed.
Credits and license


Copyright (c) 2009 Henrik Nyh
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.


## dezoomify.rb
#!/usr/bin/env ruby
# Dezoomify. See README.markdown.
# By Henrik Nyh <http://henrik.nyh.se> 2009-02-06 under the MIT License.

require 'cgi'
require 'open-uri'
require 'rubygems'
require 'nokogiri'

module Kernel
  def windows?
    RbConfig::CONFIG['host_os'].match(/mswin|windows|mingw/i)
  end
end

if windows?
  # Case-sensitive. Use forward slashes, or double-escape backslashes.
  TEMP_DIRECTORY = "C:/WINDOWS/Temp"
else
  TEMP_DIRECTORY = "/tmp"
end

ARGV.each_with_index do |page_url, page_url_index|
  if page_url.include?("zoomifyImagePath")
    puts "#{page_url_index}. Extracting path from URL"
    source = page_url
  else
    puts "#{page_url_index}. Visiting #{page_url}"
    source = open(page_url).read
  end

  paths = source.scan(/zoomifyImagePath=([^"'&]+)/).flatten.map {|path| path.gsub(' ', '%20') }.uniq

  paths.each_with_index do |path, path_index|
    path = CGI.unescape(path)
    full_path = URI.join(page_url, path+'/')
    puts "  #{page_url_index}.#{path_index} Found image path #{full_path}"


    # <IMAGE_PROPERTIES WIDTH="1737" HEIGHT="2404" NUMTILES="99" NUMIMAGES="1" VERSION="1.8" TILESIZE="256"/>
    xml_url = URI.join(full_path.to_s, 'ImageProperties.xml')
    doc = Nokogiri::XML(open(xml_url))
    props = doc.at('IMAGE_PROPERTIES')

    width = props[:WIDTH].to_i
    height = props[:HEIGHT].to_i
    tilesize = props[:TILESIZE].to_f

    tiles_wide = (width/tilesize).ceil
    tiles_high = (height/tilesize).ceil

    # Determine max zoom level.
    # Also determine tile_counts per zoom level, used to determine tile group.
    # With thanks to http://trac.openlayers.org/attachment/ticket/1285/zoomify.patch.
    zoom = 0
    w = width
    h = height
    tile_counts = []
    while w > tilesize || h > tilesize
      zoom += 1

      t_wide = (w / tilesize).ceil
      t_high = (h / tilesize).ceil
      tile_counts.unshift t_wide*t_high

      w = (w / 2.0).floor
      h = (h / 2.0).floor
    end
    tile_counts.unshift 1  # Zoom level 0 has a single tile.
    tile_count_before_level = tile_counts[0..-2].inject(0) {|sum, num| sum + num }

    files_by_row = []
    tiles_high.times do |y|
      row = []
      tiles_wide.times do |x|
        filename = '%s-%s-%s.jpg' % [zoom, x, y]
        local_filepath = "#{TEMP_DIRECTORY}/zoomify-#{filename}"
        row << local_filepath

        tile_group = ((x + y * tiles_wide + tile_count_before_level) / tilesize).floor

        tile_url = URI.join(full_path.to_s, "TileGroup#{tile_group}/#{filename}")
        url = URI.join(tile_url.to_s, filename)
        puts "    Getting #{url}..."
        File.open(local_filepath, 'wb') {|f| f.print url.read }
      end
      files_by_row << row
    end


    # `montage` is ImageMagick.
    # We first stitch together the tiles of each row, then stitch all rows.
    # Stitching the full image all at once can get extremely inefficient for large images.

    puts "    Stitching #{tiles_wide} x #{tiles_high} = #{tiles_wide*tiles_high} tiles..."

    row_files = []
    files_by_row.each_with_index do |row, index|
      filename = "#{TEMP_DIRECTORY}/zoomify-row-#{index}.jpg"
      `montage #{row.join(' ')} -geometry +0+0 -tile #{tiles_wide}x1 #{filename}`
      row_files << filename
    end

    filename = "#{TEMP_DIRECTORY}/zoomified-#{page_url_index}.#{path_index}.jpg"

    `montage #{row_files.join(' ')} -geometry +0+0 -tile 1x#{tiles_high} #{filename}`

    unless windows? || `which xattr`.empty?
      # Set "Downloaded from" Finder metadata, like Safari does.
      system('xattr', '-w', 'com.apple.metadata:kMDItemWhereFroms', page_url, filename)
    end

    puts "    Done: #{filename}"

    # Reveal in Finder if on OS X.
    unless windows?
      `which osascript && osascript -e 'tell app "Finder"' -e 'reveal POSIX file "#{filename}"' -e 'activate' -e 'end'`
    end

  end

end
	#!/usr/bin/env ruby
	# Dezoomify. See README.markdown.
	# By Henrik Nyh <http://henrik.nyh.se> 2009-02-06 under the MIT License.

	require 'cgi'
	require 'open-uri'
	require 'rubygems'
	require 'nokogiri'

	module Kernel
	def windows?
	RbConfig::CONFIG['host_os'].match(/mswin\|windows\|mingw/i)
	end
	end

	if windows?
	# Case-sensitive. Use forward slashes, or double-escape backslashes.
	TEMP_DIRECTORY = "C:/WINDOWS/Temp"
	else
	TEMP_DIRECTORY = "/tmp"
	end

	ARGV.each_with_index do \|page_url, page_url_index\|
	if page_url.include?("zoomifyImagePath")
	puts "#{page_url_index}. Extracting path from URL"
	source = page_url
	else
	puts "#{page_url_index}. Visiting #{page_url}"
	source = open(page_url).read
	end

	paths = source.scan(/zoomifyImagePath=([^"'&]+)/).flatten.map {\|path\| path.gsub(' ', '%20') }.uniq

	paths.each_with_index do \|path, path_index\|
	path = CGI.unescape(path)
	full_path = URI.join(page_url, path+'/')
	puts " #{page_url_index}.#{path_index} Found image path #{full_path}"


	# <IMAGE_PROPERTIES WIDTH="1737" HEIGHT="2404" NUMTILES="99" NUMIMAGES="1" VERSION="1.8" TILESIZE="256"/>
	xml_url = URI.join(full_path.to_s, 'ImageProperties.xml')
	doc = Nokogiri::XML(open(xml_url))
	props = doc.at('IMAGE_PROPERTIES')

	width = props[:WIDTH].to_i
	height = props[:HEIGHT].to_i
	tilesize = props[:TILESIZE].to_f

	tiles_wide = (width/tilesize).ceil
	tiles_high = (height/tilesize).ceil

	# Determine max zoom level.
	# Also determine tile_counts per zoom level, used to determine tile group.
	# With thanks to http://trac.openlayers.org/attachment/ticket/1285/zoomify.patch.
	zoom = 0
	w = width
	h = height
	tile_counts = []
	while w > tilesize \|\| h > tilesize
	zoom += 1

	t_wide = (w / tilesize).ceil
	t_high = (h / tilesize).ceil
	tile_counts.unshift t_wide*t_high

	w = (w / 2.0).floor
	h = (h / 2.0).floor
	end
	tile_counts.unshift 1 # Zoom level 0 has a single tile.
	tile_count_before_level = tile_counts[0..-2].inject(0) {\|sum, num\| sum + num }

	files_by_row = []
	tiles_high.times do \|y\|
	row = []
	tiles_wide.times do \|x\|
	filename = '%s-%s-%s.jpg' % [zoom, x, y]
	local_filepath = "#{TEMP_DIRECTORY}/zoomify-#{filename}"
	row << local_filepath

	tile_group = ((x + y * tiles_wide + tile_count_before_level) / tilesize).floor

	tile_url = URI.join(full_path.to_s, "TileGroup#{tile_group}/#{filename}")
	url = URI.join(tile_url.to_s, filename)
	puts " Getting #{url}..."
	File.open(local_filepath, 'wb') {\|f\| f.print url.read }
	end
	files_by_row << row
	end


	# `montage` is ImageMagick.
	# We first stitch together the tiles of each row, then stitch all rows.
	# Stitching the full image all at once can get extremely inefficient for large images.

	puts " Stitching #{tiles_wide} x #{tiles_high} = #{tiles_wide*tiles_high} tiles..."

	row_files = []
	files_by_row.each_with_index do \|row, index\|
	filename = "#{TEMP_DIRECTORY}/zoomify-row-#{index}.jpg"
	`montage #{row.join(' ')} -geometry +0+0 -tile #{tiles_wide}x1 #{filename}`
	row_files << filename
	end

	filename = "#{TEMP_DIRECTORY}/zoomified-#{page_url_index}.#{path_index}.jpg"

	`montage #{row_files.join(' ')} -geometry +0+0 -tile 1x#{tiles_high} #{filename}`

	unless windows? \|\| `which xattr`.empty?
	# Set "Downloaded from" Finder metadata, like Safari does.
	system('xattr', '-w', 'com.apple.metadata:kMDItemWhereFroms', page_url, filename)
	end

	puts " Done: #{filename}"

	# Reveal in Finder if on OS X.
	unless windows?
	`which osascript && osascript -e 'tell app "Finder"' -e 'reveal POSIX file "#{filename}"' -e 'activate' -e 'end'`
	end

	end

	end