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
Rob writes:
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.
No, it is just a _different_
That article may have been concerned with something I learned about at university
- inverse fourier transforms.
Right. It did involve fourier transforms of some sort (I
used to have some idea of what that means) but applied to
the image not the lens, if I am remembering right.
John M.
There are a few software packages designed to do just this for astronomical
images.. Lucy-Richardson Deconvolution, Maximum Entropy plus a couple more
algorithms.. very cpu intensive (forget about using a Pentium 200). I have not
been impressed by the results, too much work for an incremental
