The liquidrescale (lqr) library provides a c/c++ api for performing non-uniform resizing of images by the seam-carving technique.

the library takes images in plain array format as input and converts them to a multi-size representation.

following is a list of features:

* areas in the image can be marked for preservation or discard
* once the image has been fully processed, the scaling can be done
in real-time. in fact, the information can be saved and read out
later without any further processing
* the resizing is done with a single function which automatically
performs all the necessary operations; it can also work in
successive steps without wasting computational time
* possibility to tune the carving operation by letting the seams be
less connected, or more rigid, or both
* can export and import the visibility map (the seams)
* other images can be attached and undergo the same carving process
as the parent image
* the automatic feature detection algorithm can be tuned by
selecting among different energy gradient functions
* reports progress through a customizable interface
* a signalling system permits to cleanly handle errors
the library implements the algorithm described in the paper "seam carving for content-aware image resizing" by shai avidan and ariel shamir, which can be found at http://www.faculty.idc.ac.il/arik/imret.pdf

this package contains the development files.