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I-5
Appendices
V440-F C-Mount Code Reader User Manual
I-4 ISO/IEC 16022
S
y
mbo
l Qualit
y Ou
tp
ut
I
I-4-
1 Symbol C
ontrast
I-4
ISO/IEC 16022 Symbol Quality
Output
Symbol Quality Parameters for Data Matrix symbols specified by ISO/IEC 16022.
I-4-1
Symbol Contrast
Usage:
Lets the user know if contrast settings are less than acceptable.
Definition:
All the pixels that fall within the area of the test symbol, including its
required zone, will be sorted by their reflectance values to select the
darkest 10% and the lightest 10% of the pixels. The arithmetic mean of
the darkest and the lightest pixels is calculated and the difference of the
two means is the Symbol Contrast.
(ANSI) Symbol Contrast grading is defined this way:
A (4.0) if SC > 70%
B (3.0) if SC > 55%
C (2.0) if SC > 40%
D (1.0) if SC > 20%
F (0.0) if SC < 20%
If enabled, the symbol contrast is appended to the symbol data according
to the
ISO/IEC 16022 Symbol Quality Output Mode
setting.
Serial Cmd:
<
K709,
symbol contrast
,print growth,axial non-uniformity,UEC
>
Default:
Disabled
Options:
0 = Disabled
1 = Enabled
I-4-2
Print Growth
Definition:
The extent to which dark or light markings appropriately fill or exceed
their module boundaries. These values are determined by counting pixels
in the clock pattern of the binary digitized image, then comparing it to a
nominal value and minimum and maximum values. The print growth
grade is defined in this way:
A (4.0) if -0.50 < PG < 0.50
B (3.0) if -0.70 < PG < 0.70
C (2.0) if -0.85 < PG < 0.85
D (1.0) if -1.00 < PG < 1.00
F (0.0) if PG < -1.00 or PG > 1.00
If enabled, the print growth is appended to the symbol data according to
the
ISO/IEC 16022 Symbol Quality Output Mode
setting.
Serial Cmd:
<
K709,
symbol contrast,
print growth
,axial non-uniformity,UEC
>
Default:
Disabled
Options:
0 = Disabled
1 = Enabled
Summary of Contents for V440-F
Page 1: ...Z452 E 01 84 9000440 02 Rev A V440 F C Mount Code Reader User Manual...
Page 31: ...1 Overview of WebLink Interface 1 16 V440 F C Mount Code Reader User Manual...
Page 139: ...4 Setup 4 76 V440 F C Mount Code Reader User Manual...
Page 183: ...7 Terminal 7 6 V440 F C Mount Code Reader User Manual...
Page 243: ...Appendices A 22 V440 F C Mount Code Reader User Manual...
Page 249: ...Appendices C 4 V440 F C Mount Code Reader User Manual...
Page 283: ...Appendices E 10 V440 F C Mount Code Reader User Manual...
Page 399: ...Appendices I 18 V440 F C Mount Code Reader User Manual...
Page 423: ...Appendices K 14 V440 F C Mount Code Reader User Manual...
Page 437: ...Appendices L 14 V440 F C Mount Code Reader User Manual...
Page 471: ...Appendices N 18 V440 F C Mount Code Reader User Manual...
Page 481: ...Appendices O 10 V440 F C Mount Code Reader User Manual...
Page 493: ...Appendices R 8 V440 F C Mount Code Reader User Manual...
Page 499: ...Appendices S 6 V440 F C Mount Code Reader User Manual...