This is a Gimp plugin that uses Python to re-implement Scalex algorythm. This plugins come with an extra, Scale2Ex that combine scale2x and gimp dilate plugin.
Scale2x is real-time graphics effect able to increase the size of small bitmaps guessing the missing pixels without interpolating pixels and blurring the images.
It was originally developed for the AdvanceMAME project in the year 2001 to improve the quality of old games with a low video resolution.
The Scale2x effect was developed by Andrea Mazzoleni in the year 2001 for the project AdvanceMAME.