Omron V440-F, User Manual

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8 Advanced Settings
V440-F C-Mount Code Reader User Manual
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ymb
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8-5
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Examples of 2D Damaged Mode, Attempt Morphology Manipulation, Scale Image Up, and Scale
Image Down
Notes on Using Advance Decode Parameters
Before setting advanced features, the following setup conditions should be considered in time-critical
applications:
•
Aim for around
4
pixels per element PPE . This is optimal for decoding performance. When the
PPE is around 8 or higher, enable Pixel Binning in the
Camera Setup
section of
Advanced Set-
tings
. Binning will reduce the resolution of the image. Prior to decoding, the number of PPE indi-
cated should drop to 50% compared to the original image.
•
In applications that use Data Matrix symbols of a fixed size and fixed number of elements, use the
Optimize
speed option. This will preset the decode algorithm to look only for Data Matrix symbols
with the Optimized dimensions and PPE, leading to faster decode times.
•
Enable
2D Damaged Mode
from the
Symbologies
section of
Advanced Settings
. This helps
decode symbols with distorted grids in the reader's field of view.
•
Consider using the
Curved 2D
feature. It can improve decode performance when the Data Matrix
symbol covers a large part of a curved surface, such as a cylindrical surface. Large is considered
to be about ½ to a ¼ for the symbol-to-surface ratio in the image. Enabling the Curved 2D when
the Data Matrix symbol is small compared to the curve will increase the time required to decode
the symbol.
Advanced Decoding Parameters Examples