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Existence inspection by point measurement
9-10 Existence inspection by point measurement
· Inspection sequence
Image capture
Binary image
conversion
Black/white evaluation
of points
Average light
level
Light level evaluation
of points
Purpose
Example
Applications
Checking the presence or absence of packed parts, inspecting the working
condition of LEDs or fluorescent character display tubes, and sorting household
electric appliances
[Inspection at 6 points]
The presence or absence of target objects is examined.
· A simple black or white evaluation is made in the specified pixel area of binary
images.
· The light level in the specified pixel area is averaged, and a decision is made
whether or not it is within the specified lightness range in gray scale images.
Number of points (max.)
: 128 points at average light levels
256 points in binary images
Point size: 2 m x 2n pixels
(m, n = 1 to 16)
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