Photoresampling is a fine digital images processor able to "smooth & focus" picture's details whenever you need to resize it. PhotoResampling is capable to work with lots of algorithms: Catmull-Rom, B-spline, Mitchel-Netravali, GB1, GB2, GBMX, Bilinear, Lanczos, GBLS. GBLS is my own algorithm which, in my opinion, offers the best results, specially for 250% enlargment or more.