ScanSoft OMNIPAGE DIRECT, Руководство по установке

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Improving Accuracy
34 How to Improve Performance
Improving Accuracy
If you scan typeset, high-quality printed pages, you will probably find that
Direct recognizes text perfectly: the text that appears in your word
processor matches the text in the scanned page letter for letter.
With lesser-quality pages, text-recognition accuracy will be poorer. These
factors most affect text-recognition accuracy:
• Document Quality
• The Language Analyst
• The Brightness Setting
• Scanner Glass Clarity
• Paper Transparency
Document Quality
Direct recognizes characters in almost any font from 6 to 72 points in size.
However, keep the following in mind when using Direct:
• The print should be reasonably clean and crisp. Characters must
be distinct: separated from each other and not blotched together
or run-on.
• The document should be free of notes, lines, or doodles; anything
that is not a printed character will slow Direct considerably, and
any character distorted by a mark will be unrecognizable.
• The document font must be non-stylized; for example, the Zapf
Chancery font is too fancy for Direct.
• It's hard to recognize underlined text accurately; the underline
changes the shape of descenders on the letters q, g, y, p, and j.
The Language Analyst
The Language Analyst automatically performs word and character
analysis during recognition to check spelling and replace unknown words
with words that are most likely to be correct.
Improve recognition accuracy by selecting Use Language Analyst . You may
notice that using the Language Analyst increases the processing time.
The Use Language Analyst selection is available by choosing Spelling... in
the Direct icon Control menu (click once on the minimized Direct icon on
the Windows desktop).