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Chapter 6 - Recognition
Note: Running Background mode in the case of multiprocessor systems only leads to an increase in
recognition speed if the batch being processed contains a large number of pages.
To stop Background Recognition:
● Select the Stop Background Recognition item in the Process menu.
Note: Background recognition mode uses currently active recognition options.
Recognition with Training
As previously stated, 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. FineReader,
nevertheless, features a number of user pattern training tools.
Train User Pattern mode
Train User pattern mode may come in useful when:
1. recognizing texts set in decorative fonts;
2. recognizing texts containing unusual characters (e.g. mathematical symbols);
3. 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 bene-
fit received.
Pattern training works as follows. One or two pages are recognized in training mode, and, subsequently,
a pattern created. FineReader then uses this pattern to aid recognition of the remaining text.
Sometimes two or even three characters may get "glued" together, and FineReader may be unable to
enclose each character in an individual frame to separate them. If this proves to be 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 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.
Notes:
1. 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.
2. 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.
3. 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 Recognition tab, menu Tools>Options.
To train a user pattern:
1. Start Train user pattern mode - click the Train user pattern radio button on the
Recognition tab, Tools>Options menu, in the Training group. The default pattern name
("Default") will be displayed in the status line.