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22 August 2006
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Page 43
Savin C2525
Scan Data Capture Accuracy Results
OCR accuracy on the Savin C2525 proved to be much
more sensitive to the scanning algorithm used more so
than the resolution of capture.
As the table below illustrates, in BERTL’s test, which in-
cludes multiple fonts, font colors and font sizes, the text
node delivered an image that required considerably less
user intervention after the initial OCR read evaluation had
been carried out.
The level of accuracy at 200 dpi text mode was among the
best we have seen with 6 point reporting a 90 percent ac-
curacy rate and a 100 percent conversion at 8 point.
The 300 dpi text node delivered, as expected, even better
results with 6 point only missing out on a 100 percent
accuracy rating by missing one Times New Roman word
in red type.
As the table illustrates, text/photo mode did not fair as well
in either the 200 dpi or 300 dpi modes, with the 200 dpi
text mode actually delivering a higher OCR accuracy rat-
ing that the 300 dpi text/photo mode at 6 point and 8 point
test patterns.
The most important figures to look for in general office
OCR are the 10 point Times New Roman and Arial fonts
in black that are the most frequently used font used font
styles used in day to day correspondence. In both of these
font settings, the Savin C2525 delivered a perfect 100 per-
cent OCR conversion in all four tested scan settings.
Scan
0
10
20
30
40
50
60
70
80
90
100
Percentage of words processed correctly with no human intervention
4 point
6 point
8 point
10 point
12 point
14 point
Effect of Scan Resolution on OCR Accuracy Evaluation
200 dpi text
200 dpi text photo
300 dpi text
300 dpi text photo
Productivity tests performed on Savin MP C3000 sister device with the same scanner as the C2525.
