6.0

Chapter 6 - Recognition

buttons move the frame border as well (and are useful for training italic symbols - see below). Once

you have positioned the frame correctly, type in the character and click the

Train button.

Note:

1. You may only train the system to read characters included in the alphabet.

If you wish to train FineReader to read characters that cannot be entered from the

keyboard, use a combination of two characters to denote these non-existent characters or

copy the required character from the Character Table (click the button in the

Pattern

Training dialog to open the Character Table).

2. If you wish to train the system to retain character formatting, select the corresponding

Italic or Bold item in the Pattern Training dialog before clicking the Train button.

3. Make sure that only uppercase/lowercase characters are entered when training

uppercase/lowercase character images respectively.

If you make a mistake during training, click the

Back button to return the frame to its previous posi-

tion. The last "image-character" pair to be entered will automatically be removed from the pattern. Note

that this "undo" function is limited to the last word trained.

Training to recognize ligatures

A ligature is a combination of two or three "glued" characters, for example, fi, fl, ffi, etc. These charac-

ters are difficult to separate because they are "glued" as part of the printing process. In fact, better

results can be obtained by treating them as "single" compound characters.

Training ligatures is no different to training separate characters:

1. Type in the desired character combination and click the Train button.

2. The frame in the top dialog window should enclose the entire ligature. You can move the

frame border using the mouse or by clicking the and buttons.

Each pattern may contain up to 1000 new characters. However, avoid creating too many ligatures, as it

may have an adverse effect on recognition quality.

Always take the following into account when training FineReader:

1. FineReader does not differentiate between certain characters that are normally considered

different. For example, the straight ('), right (’) and left (‘) apostrophes are treated as one

character - the straight apostrophe. Thus, you will never encounter right and left apostrophes

in recognized text, even if you attempt to train FineReader into recognizing them.

2. The way in which certain characters are recognized depends on their environment

How to Edit a User Pattern

You may wish to edit a new pattern before you start using it, as an incorrectly trained pattern will result

in recognition quality being adversely affected.

The pattern should only contain whole characters or ligatures. Characters with cut edges and incorrect-

ly labeled characters should be removed from the pattern.