liblqr (liquid resize) implements a smart-resize algorithm from 2007 SigGraph. This algorithm works by finding paths of least energy that traverse an image from top to bottom (or left to right) in an image, and carving the image by removing the line. The algorithm can also be reversed, and used to insert a line of averaged pixels to enlarge the picture.
WWW: http://liblqr.wikidot.com/
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