enlarge resize resampler image plugin

UPSIZE: An image upsizing plugin featuring two modes.
1. Smooth (IBFNBQH): Image upsizing with Interpolatory Box Filtered Natural BiQuadratic Histosplines. [This is the default option.]
2. Sharp (EANBQH): Exact Area image upsizing with Natural BiQuadratic Histosplines.

This plugin was written by Nicolas Robidoux and Adam Turcotte at Laurentian University in Sudbury, Ontario, Canada.