How does xBR scaler work?

Could it be used to interpolate other kind of data? Because it gives vector-art quality results from low-res images: http://www.youtube.com/watch?v=htdi5jc3Ijc

that is compared to all other resampling algorithms, you can find in math books.

>>3

xBR looks a lot better than simpler filters:
http://forum.zdoom.org/viewtopic.php?t=37373&p=709991

artists use it to upscale pixelart, when adapting old games for new releases. It could also be used to remaster anime and similar animations.