Datasheet

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USER'S GUIDE
predefines zones are not picked up by the IRISPen, the invisible or “drop out”
colors red and yellow should be used.
Secondly, the user has influence over the rejection rate. Drag the slider bar to
adjust the rejection level. When the rejection threshold is increased, characters
will be marked as unknown symbols quicker, there will be less substitutions; when
the rejection rate is decreased, the system will substitute more symbols as it tries
harder to find a match.
For applications where extreme accuracy is essential, you should maintain a
high rejection level. Evidently, when you are encoding structured data such as
client numbers etc., it is always useful to integrate a check digit which is verified
by the encoding utility.
A WORD ABOUT THE TECHNOLOGY
You cannot read handprinted numerals and other data at the same time. The
nature of the images to analyze is very different, as the graphics below illustrate.
The first time, a typed bank account number was scanned. Although an old
typewriter was used, the individual symbols are nicely separated and each font
shape is clearly legible as all bars, loops are sufficiently thick etc.
6chapter5.p65 2/16/2001, 3:27 PM5