Re: Accurate edge detection?

I could you recommend look at couple of images, what I've just
created. The first image http://www.smartfills.com/Html/Images/diffr.jpg
is intended to show, how some test objects with simple geometry look
after diffraction. The second one 
http://www.smartfills.com/Html/Images/diffr1.jpg
is result of my attempt restore these objects. I added some noise to
the first image and tried to revert transform. Not very bad for 5 ours
at my comp (course, it could be done better). BTW, looking at the
first image, especially at triangle, it is getting quite clear that
there is no such thing as where actually true edge is. It cannot be
established using slopes steepness. But, on the other hand, more
advanced methods are able to obtain better results. If you really need
some assistance, do not hesitate contact me.
A.