Omron V530-R150E-3 Operation Manual page 267

Improving Reading
Before countermeasure
Hollowing of Dots
Before countermeasure
250
• Try reading in Pattern mode (QR Code or Data Matrix).
Try the following countermeasures when dots appear "hollowed," i.e.,
the centers of dot images are white.
Countermeasures
• The influence of hollowing can be decreased by increasing the
field of vision and thereby decreasing the size of the code image.
• The influence of hollowing can be decreased using the smooth-
ing function (0. Image Adjust/Filtering).
• The influence of hollowing can be decreased by adjusting the
BGS levels (0. Image Adjust/BGS Levels).
After countermeasure
After countermeasure
Section 9-1