Panasonic A230, User Manual, Page: 139 / 377

Character Recognition: Dictionary and Character Recognition Function OCR Type A230
7 − 9
7.4 Dictionary
42. Filter
Cotracts or expands the area in the segmentation
color.
If the dotted characters are to be extracted, expand
them to connect the dot interval, enabling an easier
extraction.
Contract the characters if they are light in color or
with lines on the back, so that an easier extraction
is made.
43. How to Segment
Select Auto Slice, Gray or Fixed Slice.
<Auto Slice>
Extracts the characters in the binary image (in black and white) in the
area. The slice levels, threshold values for binarization, are
automatically set according to the gray scale values of the pixels within
the set area. The set slice levels can be referred in ”Slice Level” from the
menu but can NOT be changed.
<Gray>
The parameters for the segmentation are as follows;
44.Thickness (Thin/Thick)
Select the width of the characters to be extracted.
45. Noise Reduction (1.00 to 2.00)
Set the level to delete the noise. The default setting is 1.20. The higher
level tends to remove the noise easily. The lower level tends to extract
the small characters easily, but the attention is needed as the noise is
also often extracted.
46. Connection Level (02 to 10)
The default setting is 05.
Lower the level if the noise and characters stick each other when
verifying what extracted or noises combined to be big, being unable to
delete it.
<Fixed Slice>
Extracts the characters in the binary image (black and white) in the area. The
slice levels, threshold values for binarization, can be set in “Slice Level” from
the menu. The values, 0 to 255, can be set.