Quote:
Originally Posted by osnova
When the conversion (300 dpi grayscale to 600 dpi B/W) is done, the "blockiness" of the text is reduced, not increased while blurry text becomes sharp.
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Sounds a bit like what this scaler does:
http://www.hiend3d.com/hq4x.html
While those examples look impressive, you should be aware that it's just eyewash. Such a process does not add real detail, and there are cases when such a filter actually makes things worse.
If you want 600 dpi, you have to scan 600 dpi. There is no other way.