Created
August 4, 2016 22:43
-
-
Save lchanmann/0ce2b8254efd7e3456aec27584fdaf4e to your computer and use it in GitHub Desktop.
RMagick thumbnail
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| require 'RMagick' | |
| img = Magick::Image.read("photo.jpg").first | |
| scale_factor = 20.0 / [img.rows, img.columns].max | |
| thumbnail = img.thumbnail(scale_factor) | |
| thumbnail.border! 1, 1, 'gray60' | |
| thumbnail.border! 1, 1, 'red' | |
| thumbnail.write "photo_thumbnail.jpg" |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment