6-1
Section
SET (Setting) Mode
126
6-1-7
Read DM (Pattern)
1. Read DM (Pattern)
Pattern Settings
The method of registering model images of finder patterns, and
using these models to find finder patterns from input images is
called “pattern search.” Because image patterns are used, code
positions can still be found with greater accuracy than with Nor-
mal mode, even if the printing quality is poor.
Note There is an orientation tolerance of
±
10
°
with this method. Mod-
els cannot be detected for orientations greater than this.
Search region
(Whole screen under
normal conditions)
The higher correlation
value (similarity) within
the search region is de-
tected as a finder pat-
tern.
Model
Search
Note When using this menu, set the field of vision to satisfy the follow-
ing conditions.
•
There are more than 10 pixels per cell.
•
There is a margin of at least 2 cells around the code.
The orientation of the (L-shape) finder pattern is restricted to the
following:
No other orientation is possible and so ensure that code images
are obtained in the correct orientation.
Example: OK
NG