looker/image_voodoo

Name: image_voodoo

Owner: looker

Description: ImageScience-compatible image processing for JRuby

Forked from: wilg/image_voodoo

Created: 2017-03-08 23:01:26.0

Updated: 2018-01-15 22:14:56.0

Pushed: 2017-03-08 22:49:19.0

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Size: 924

Language: Ruby

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README

ImageVoodoo

DESCRIPTION:

ImageVoodoo is an Image manipulation library with a ImageScience-compatible API for JRuby.

http://github.com/jruby/image_voodoo

FEATURES/PROBLEMS:

• Uses java.awt and javax.image APIs native to Java to perform image manipulation; no other dependencies needed.
• Includes image_voodoo command-line utility for quick resizing of images, “image_voodoo –help” for usage.
• Due to lack of TIFF support in ImageIO it is also not supported yet by image_voodoo. If you need it, create an issue in GitHub.
• JPEG CMYK support is thanks to work of Werner Randelshofer and Monte Media Library. Monte Media Library is provided under CC BY 3.0 license.
• Now supports reading a variety of EXIF data. This also supports new function –orient based on how phones typically save photo data.

SYNOPSIS:

ageVoodoo.with_image(ARGV[0]) do |img|
img.cropped_thumbnail(100) { |img2| img2.save "CTH.jpg" }
img.with_crop(100, 200, 400, 600) { |img2| img2.save "CR.jpg" }
img.thumbnail(50) { |img2| img2.save "TH.jpg" }
img.resize(100, 150) do |img2|
  img2.save "HEH.jpg"
  img2.save "HEH.png"
end
img.quality(0.75).save("reduced.jpg")
d

image_voodoo can also be run from the commandline:

age_voodoo -p a.gif --thumbnail 50 -p --save a_thumb.gif

In this command-line you will preview a.gif which will pop up a rendered a.gif on your screen; Then you will scale your image to a thumb to a 50 pixel size; then preview the new thumbnail image; then save it to a_thumb.gif. The CLI tool uses the same names as the API and can be a very handly command-line tool.

REQUIREMENTS:

• JRuby

INSTALL:

• jruby -S gem install image_voodoo