Cognex DataMan - Page 46

Property Type 1DStandards 2D Standards Description
horizontalMarkMisplacement
Metric SEMIT10 (DataMatrix) Horizontal Mark
Misplacement is the
average horizontal
misplacement of Data
Matrix marks from
their optimal Data
Matrix Cell Center
Points.
verticalMarkMisplacement
Metric SEMIT10 (DataMatrix) Vertical Mark
Misplacement is the
average vertical
misplacement of Data
Matrix marks from
their optimal Data
Matrix Cell Center
Points.
cellDefects
Metric SEMIT10 (DataMatrix) Cell Defects is the
ratio of incorrect
pixels to total pixels in
the grid.
finderPatternDefects
Metric SEMIT10 (DataMatrix) Finder Pattern Defects
is the ratio of incorrect
pixels to total pixels in
the finder pattern.
overallGrade
Metric ISO/IEC 15416 ISO/IEC15415
(DataMatrix, QR),
AIM/DPM ISO/IECTR-
29158 (DataMatrix, QR),
SEMIT10
Overall grade
calculated from the
individual metrics.
edgeDetermination
Metric ISO/IEC 15416 Edge Determination is
the number of edges
detected in the Scan
Reflectance Profile. If
the number of
detected edges is
greater than or equal
to the expected
number of edges, the
grade is 4. Otherwise,
the grade is 0.
defects
Metric ISO/IEC 15416 Defects are
irregularities in
elements (bars and
spaces) and quiet
zones. The parameter
is used to measure
the ‘noise’ that results
from unwanted dips
and spikes in the
Scan Reflectance
Profile. The smaller
the defect, the better
the grade.
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DataMan Application Development