2-23-(15)
ECM Search
Section 2-23
Edge
The edge registration method can be used when the measurement object is
rectangular.
Draw 4 regions. One edge is detected from each region and that becomes the
reference position.
1.
Setting Edge Detection Conditions
Set the direction to search for the 4 edges and the density change as the
measurement conditions.
Region 2
Region 3
Line connecting edge points
found for regions 0 and 1.
Search coordinates (cross point of lines)
Region 1
Line connecting edge points
found for regions 2 and 3.
Region 0
Edge
Measurement conditions
Region0
Region1
Region2
Region3
End
End
Region0 direction
Region0 Color
Region1 direction
Region1 Color
Region2 direction
Region2 Color
Region3 direction
Region3 Color
:
:
:
:
:
:
:
:
Light
Light
Light
Light
Dark
Dark
Dark
Dark
Edge detection direction:
,
,
,
.
Density change:
Light
dark, dark
light.
Example: Finding this position in region 0.
Direction:
Color: Light
dark
