Preston wrote: >(I remember an article in Scientific American 15 to 20 years ago about the >improvement of photographic images (I think they were alluding to spy >satellite images) to eliminate/reduce blur due to camera motion and lens >focus (or lack thereof). That article may have been concerned with something I learned about at university - inverse fourier transforms. If you can map the aberrations in a satellite lens system while it is still on earth and make a transform from it, you can actually use an inverse transform to remove the aberrations. The result is a sharper image than the camera actually saw. I know this technology has been used with military spy satellite images, but I don't know where else it may have been used. It would be difficult to use on a commercial basis due to the need to map the aberrations of the lens system. It would be wonderful if it could be used in a scanner, because theoretically it ought to be possible to remove aliasing and lens aberrations from the scanner optics. (but I've discussed it before and I won't bore everyone with it again! :) Rob Rob Geraghty [EMAIL PROTECTED] http://wordweb.com
