Archived posting to the Leica Users Group, 2004/10/01
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Karen Nakamura wrote: > p.s. I can believe the program can learn to compensate for some > barrel/pincushion type distortion as well as for some chromatic > aberration error, but it really can't make something out of nothing. > Those movies where the FBI/NSA/NASA/JPL technicians are able to turn a > fuzzy face into something so sharp you can see Robert DeNiro's warts > are ... well.. science fiction. Well that's not entirely science fiction ... for an interesting read find the book entitled "The Secret Empire" by Taubman. It chronicles some of the development behind the U2 and later satellites. It turns out that Harry Land (an old acquaintance of mine btw) was instrumental in sheparding the development of some pretty amazing photographic technologies. People who knew Harry very well knew that he had used to go off for some cloak and dagger meetings but he tended to be gandiose and we never knew the real extent of his involvement until some of it began to be declassified many years later. In the 1980s we used to do our digital capture and manipulation work using a high end video camera and an "Itek" capture card --- really excellent product --- well it turns out that "Itek" was funded by the CIA "venture capital" arm... in any case one day I was playing around with some edge enhancement routines trying to develop some automatic pattern recognition algorithms for some digital pathology work I was doing... and all of a sudden from the blur that was in some blob inside the nucleus of a piece of human brain, I saw some coiled structures (this is all with light microscopy btw) ... at the time I didn't know what to make of it, and show the loops to my thesis advisor -- well to make a long story short(er) after some more work had been done to verify this, it turns out that we were imaging human DNA supercoils which are supposedly too small to be imaged by visible light. But let's get this straight ... we are talking about world class (Leitz/Zeiss etc) microscope lenses and world class ultraexpensive satellite and aerial camera lenses -- digital enhancement techniques do not *replace* high quality lenses, rather may take off when they have reached their limits. Jonathan