As previously mentioned, ABBYY FineReader can read texts set in
practically any font regardless of print quality. Consequently, no
prior training is normally required before recognition can take
place. ABBYY FineReader, nevertheless, features a number of user
pattern training tools.
recognizing large volumes (more than a hundred pages) of texts
of low print quality.
Tip: Use Train User Pattern mode only if one of
the above applies. In other cases you may obtain a slight
increase in recognition quality, but the time and effort involved
will probably outweigh the benefit.
Pattern training works as follows. One or two pages are
recognized in training mode, and, subsequently, a pattern is created. ABBYY
FineReader then uses this pattern to aid recognition of the
remaining text.
Sometimes two or even three characters may get "glued" together,
and ABBYY FineReader may be unable to enclose each character in an
individual frame to separate them. If this is the case (i.e. you
cannot move the frame so that it contains only one whole character
and no other character parts), you can train ABBYY FineReader to
recognize the whole inseparable character combinations. Examples of
character combinations frequently found glued together include ff,
fi, and fl. Such combinations are referred to as ligatures.
Note:
A pattern is only useful in the case of documents that have the
same font, font size, and resolution as the document used to create
the user pattern.
Each pattern is created for a particular batch. Consequently,
if a batch is deleted, its user pattern is also deleted. Patterns
can, however, be copied into other batches. To transfer a user
pattern to another batch, simply save the batch options in a
batch template format
file.
If you switch to recognizing texts set in a different font,
always disable any user patterns - choose the Do not use user
pattern item on the Read tab, menu
Tools>Options.
To
train a user pattern:
Start Train user pattern mode - click the Train user
pattern radio button on the Read
tab, Tools>Options menu, in the Training
group. The default pattern name ("Default") will be displayed in
the status line.
Click the 2-Read button.
Train your pattern - recognize
one or more pages in Train user pattern mode.
Trained characters are saved in the default pattern. Once you have
completed training the pattern, ABBYY FineReader will save the
pattern (Default.ptn) in the current batch folder.
Deactivate training mode (click the Use user pattern
button on the Read
tab).
Recognize the rest of the text - click the 2-Read
button.
Note:
To create several patterns for the same batch, use the Pattern Editor dialog
(click the Pattern Editor button on the
Read tab or select the Tools>Pattern
Editor menu item). Create a new pattern (click the New
button in the dialog) and select it (click the Set Active
button). Working with a created pattern is no different to working
with a default pattern (see steps
1-5). Keep in mind, however, that only one pattern may be
active at any one time.
If you've created several patterns for the same batch, the
active one will be the pattern that was last created. The active
pattern name is displayed in the status bar. To activate another
pattern, select the pattern of your choice in the pattern list in
the Pattern Editor
dialog (Tools>Pattern Editor menu) and click the
Set Active button. Then click the Use user pattern
button on the Read
tab, Tools>Options menu, in the Training
group.
If the Use built-in patterns option is set, ABBYY
FineReader will read all texts using its built-in patterns and stop
only at uncertain characters. If you are training the system to
read decorative and/or non-standard fonts (for example, Tibetan)
the use of built-in patterns may result in characters being read
incorrectly. If this occurs, disable the use of built-in patterns
(clear the Use built-in patterns checkbox on the Read
tab) and train the system to recognize each unknown character
it is likely to encounter.