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Chapter 11: Existence Inspection by Point Measurement
The presence or absence of target objects is examined.
- A simple black and 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
Purpose
whether or not it is within the specified range of brightness for gray scale
images.
Checking the presence or absence of packed parts, inspecting the working
condition of LEDs or fluorescent character display tubes, and sorting household
Applications
electric appliances
[Inspection of 6 points]
Examples
- Inspection sequence
Image capture
Existence Inspection by Point Measurement
Number of points (max.)
: 128 points looking at average
light levels 256 points in binary
images
Point size: 2 m x 2n pixels
(m, n = 1 to 16)
Binary image
Black/white evaluation
conversion
Average light
Light level evaluation
level
11-1
of points
of points
11
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