Post by Milind JoshiHi,
What about 72 DPI images? What about screenshots of scanned images?
It will not work with scanned images. It works with machine generated text. It
can always produce 100% accuracy as long as the font does not have two or more
glyphs with identical onscreen bitmaps. 100% accuracy can even be achieved when
the font does have two different glyphs with identical onscreen bitmaps, iff the
between character pixel spacing differs.
In those cases where a font has two or more identical glyphs, and the between
character spacing is also identical, there are heuristics that can be applied
that typically result in accuracy above 99%.
Post by Milind JoshiRegards,
Milind
Post by Peter OlcottPost by Claudio GrondiPost by Peter OlcottSeeScreen can obtain text from the computer display by processing the display
screen pixels, even with fonts as small as 6 points at 96 DPI display screen
resolutions with 100% accuracy.
Can't FineReader
( http://www.abbyy.com/finereader8/?param=44782#f8 )
do it, too?
Claudio Grondi
No they were one of the OCR engines tested. On the test paragraph that is in the
center of the page below, they failed to correctly match even a single
character. OmniPage 15 had identical results. This test paragraph is two sizes
larger (8 point) than the 6 point text where SeeScreen provided 100% accuracy.
http://www.seescreen.com/Unique.html