--- Joe Bauman <bau@desnews.com> wrote:
He may stack the images from the tape, enhance them through computer processing, play multiple views off each other to cancel out grain and restore details that can't be seen in any individual frame. At least that's how I believe stacking is done.
The problem with surveillance tapes is that there is nothing to stack. The object moves through the frame, changing it's orientation. With objects at "infinity", such as satellites and celestial objects, the subject is held in or near the center of the field for many, many frames, and it's orientation doesn't change quickly on the scale of the image sampling. Too, these tapes are recorded at a dead-slow rate, to conserve tape. I'd be very surprised if anyone outside of police channels could get much more useful information out of them. Chuck __________________________________________________ Do You Yahoo!? Yahoo! - Official partner of 2002 FIFA World Cup http://fifaworldcup.yahoo.com