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21
O
PTICAL
C
HARACTER
R
ECOGNITION
(OCR)
S
OFTWARE
If you want to read in text which is to be subsequently edited with
a word processing program, you require an OCR program. This
program reads in a document and attempts to recognise all of the
letters, special characters and numbers present in the text. In or-
der to achieve the highest possible recognition rate, the program
uses the newest OCR technologies as well as intelligent error cor-
rection.
The recognition rate depends on:
very high
good
problematic
Original
High print qual-
ity, high contrast,
example: black
and white bro-
chures
Standard print
quality, two-
colour, good
contrast. Exam-
ple: newspapers,
magazines, books
Poor print qual-
ity, multiple
colour, low con-
trast
Fonts
Standard fonts
from printed
media: Times,
Arial, etc.
Slightly modified
standard fonts of
the same type
Abstract fonts,
hand writing.
Scanning
quality
1 bit, b/w line
drawing
-
All other resolu-
tions.
Recognition Rate
