Improving Performance
Technical Information 9
Document Quality
OmniForm recognizes characters in almost any font from 6 to 72 points
in size. However, keep the following in mind when using OmniForm:
• The print should be reasonably clean and crisp. Characters must
be distinct: separated from each other and not blurry or
overlapping.
• The document should be free of notes, lines, or doodles.
Anything that is not a printed character slows recognition, and
any character distorted by a mark will be unrecognizable.
• The document font should be nonstylized; for example,
OmniForm may not recognize the
Zapf Chancery
font accurately.
• Forms with underlined text should have the lines placed below
the text and not touching it for best results. It is difficult to
recognize underlined text because the underline overprints the
descenders on the letters g
, j, p, q, and y, changing their shape.
Scanning Angle
Make sure that each document is positioned correctly in your scanner
and is not crooked. Even if you use the
Auto Form Straightening
option,
it is possible for the page to be too skewed for OmniForm to design it
properly. Adjust the page and rescan it if you see numerous recognition
errors due to skewing.
Scanner Glass Clarity
The sheet of glass on the flatbed of the scanner must be clear. If it gets
dirty, wipe it gently with a soft, damp, lint-free cloth or tissue. Be sure
that it is completely dry before you put pages on it.
See your scanner documentation for more information on proper
scanner maintenance.
Paper Transparency
Some paper is thin enough that the scanner sees text printed on the
opposite side of a two-sided page. To correct this problem, put a black
piece of paper behind the page between the page and the lid of the
scanner.