Panasonic PV-500, User Manual

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4.7.8 Gray Edge
What Is Gray Edge?
Gray Edge detects a brightness changing point (edge) on a grayscale image and judges as OK or NG in
accordance with the number of detected points. This function is effective if the variation in image brightness is
small and the contrast of an edge is low.
Detect Example)
Condition: Scan direction = Horizontal
Edge Condition = Dark ->
Light
Detected Position =All Scan direction = Vertical
Edge Condition = Light ->
Dark Scan direction = Clockwise
Edge Condition = Both
Output Data
Coordinates X and Y of edges
Edge Differential: Differential value of detected edge (degree of gray value change)
No. of Objects: The number of detected edges. The value is 0 to 256.
Judgement: If the number of detected objects is within the allowable range you have set, the object
will be judged as "OK", if it exceeds the allowable range, the object will be judged as
"NG"
Specifying Checker No.
1.
Select “Gray Edge” in "Checker Type".
2.
Select the checker No. list and specify a checker
number to set.
3.
Press the ENTER key to determine the checker No.
“Gray Edge” setting window is displayed. The gray
image is displayed on the screen window.
Selecting a Camera
Select a camera image to set Gray Edge checker.
1.
Select “Area Setting” in “Gray Edge” setting window.
2.
Select a camera No. in “Camera”.
The selected camera image is displayed.
Select a displayed image type (Live/Memory and Gray/Binary) or magnification in “Image Menu” opened
by pressing the F1 key.