[kaeso]

A C++ LGPL implementation of this has been as been developed as part of last year Inkscape GSoC and is available as a standalone library: https://launchpad.net/libdepixelize

It will be released in the next Inkscape major version, expected soon :)

[SimHacker]

Perfect! Thanks for the link. I want to run this over the classic SimCity tile set (and the additional ones in the add-on graphics sets like the moon base, etc), to generate high resolution pixel and vector tiles for the JavaScript browser based version of Micropolis (GPL SimCity).