|Demo - Upsizing an Image|
Upsizing an Image can be very trick, becareful.
As noted in the demo, there are some specialized tools for enlarging images by a factor of 5-12 times with significantly improved fidelity. See either Genuine Fractals or S-Spline Pro for details on how to do large scale upsizing and enlargements.
Jacques Surveyer is a photographer and consultant; see the latter at theOpenSourcery