Inverting an Image with Image Magick

Date Tue 30 October 2012Series Part 3 of Image Magick Tags

Three ways to invert an image:

convert black-white.png -negate white-black.png
convert upside-down.png -rotate 180 rightside-up.png
convert upside-down.png -flip rightside-up.png

source:	http://www.imagemagick.org/pipermail/magick-users/2003-October/011071.html

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