Dave Schleppenbach raised the question of OCR of braille symbols.
One approach has been to write on carbon paper in braille and
scan the page with a typical scanner.
This has a relatively high imaging error rate.
I am thinking about the problem to accurately image the braille dots.
I know that the diffusion properties of paper are pretty poor,
but how well would laser technology do at measuring the height
of braille dots or the depth of holes in the back of the page?
It would be useful to archive hard copy braille into electronic files.
I am skeptic that a traditional scanner can do the job and suspect
the cost of another approach would be prohibitive, but investigating
the scientific principles to solve the problem, now that's just plain
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