Panasonic Micro-Imagechecker PV310 - Page 79

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Settin
g
Checkers
Cha
p
ter 6
Checker Main application Description Refer.
Page
Binary Edge 142
Gray Edge 145
Feature Extraction 148
Position
Adjustment
Matching 150
• Measurement of a
moving amount (X, Y)
• Measurement of
rotation angle
• Movement of a
checker shape to the
current position of an
object
• Rotation of an
checker shape
according to the
rotation angle of the
object
Rotation Adjustment:
With the use of each checker function, detects the angle of the
object using the position (coordinates) of the object and
calculates the angle that the object was rotated from the base
angle. Grouped checkers are executed in the position where the
object was rotated from the base angle. But, to let each checker
refer to the adjusted angle, the number of
rotation-adjustment-referred checkers must be lower than the
number of the rotation-adjustment-referring checker. The object
can be detected following the procedures shown below.
152
Binary Edge-Horizontal Detects an angle on the basis of the coordinates of the two
edges that can be detected by scanning in horizontal direction.
154
Binary Edge-Vertical Detects the angle on the basis of the coordinates of the two
edges that can be detected by scanning in vertical direction.
156
Gray Edge-Horizontal Detects the angle on the basis of the coordinates of the two
edges that can be detected by scanning in horizontal direction.
158
Gray Edge-Vertical Detects the angle on the basis of the coordinates of two edges
that can be detected by scanning in vertical direction
160
Feature Extraction Makes a rotation adjustment using the angle of the principal axis
detected by Feature Extraction. (+/- 90 degree angle)
162
Matching (detection
angle)
Makes a rotation adjustment with the use of the Smart Matching
checker, which supports for 360-degree rotated object
160
Matching (two detection
points)
Makes a rotation adjustment using the angle created by the
straight line connected to the two detection points that were
detected by executing two Smart Matching checkers and the X
axis
162
Rotation
Adjustment
Rotation
Adjustment
Contour Matching Makes a rotation adjustment using Contour Matching checker
supportable for 360 degree angle. Up to four Contour Matching
checkers can be set per product type (including Contour
Matching checker). This function is available only if the camera is
in Frame mode.
165