This looks quite interesting: http://www.altostorm.com/
Though much of it seems to be geared towards panoramic shots it will do many things for single images.
What Rectilinear Panorama can correct?
scanned or digital not panoramic images that suffer from optical distortion (barreling or pincushioning), perspective shift and image skewing caused by camera tilt or unfavorable shooting spot, image rotation.
scanned or digital not panoramic images that suffer from optical distortion (barreling or pincushioning), perspective shift and image skewing caused by camera tilt or unfavorable shooting spot, image rotation.
(Just one paragraph - it will do more.)
The sample images are quite impressive. I haven't played with it yet and won't have time for a while, but I hope to check it out as soon as I can.
Edit: OUCH! $179 for 16-bit images (Pro version) or $69 for 8-bit (Home Version). Bummer.
