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OCR Type A230
23. Sequence
Set the matching search conditions. Detailed conditions can be set for the
sequence in which the search is to be executed.
3
Step
Select the step of the sequence that sets the search conditions. There are five
steps (1st to 5th). Set the search conditions for each step.
Accuracy (Acc.)
Adjust the level of each step (1st to 5th) to match the checker level of the
search object and to perform a stable search. Each accuracy value shows a
number of pixels.
You can select a search accuracy of ±16 pixels, ±8 pixels, ±4 pixels, ±2
pixels, ±1 pixel, or S (sub pixels) in each step. The accuracy must be set to
increase with each level, in order from 1st to 5th. Once you set the 1st search
accuracy(make the value small), the 2nd, 3rd, and 4th will automatically be
set, so if you set the 1st at 16 pixels, the rest will be set at 8 pixels, 4 pixels,
and sub pixels. Once you set a step at an accuracy of 1 pixel or sub pixels,
additional steps cannot be set. For example, if you set the 3rd step at 1 pixel
or sub pixels, you cannot set the 4th and 5th steps.
Judgment conditions (Judgment)
− Number (Cnt.)
Set the upper limit of the number of detected objects. The checker will
detect a number of objects similar to the template within the number set
here. However, the number of detected objects cannot be set to exceed the
previous step. The maximum number of detected objects is 64.
− Correlation value (Cor.)
The correlation value reflects the degree of similarity between the template
and the search object. If the correlation value is large, only objects with a
high degree of similarity will be detected. If it is small, even objects with a
low degree of similarity will be detected. The checker will search for objects
with a degree of similarity greater than the correlation value set here.
The setting range for the correlation value is 0.01 to 1.00. The default value
is 0.60.
Smart Matching
9.1
Smart Matching
9 − 5
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