168
Chapter 9 Vision Manager
Note
What is an edge?
Caution
Here the Target window range can have the following shapes.
• Straight line (scan = 0 or 1)
• Rectangle (scan = 0 or 1)
• Sector (scan = 0 or 1)
An edge is a brightness transition in
the specified window, a boundary
between dark grays and light ones.
The DENSO
µ
Vision board offers
edge detection based on brightness
levels or on areas. For brightness
levels, there is also a choice of ab-
solute and relative levels for detect-
ing transitions. Specifying absolute
defines transition as crossing the
specified brightness level. Specify-
ing relative defines transition as a
change in brightness or surface big-
ger than the specified threshold.
Position
: Edge detection point
Window
Edge
Absolute
Brightness level
Brightness
level
Relative
Brightness
Brightness
Brightness
Summary of Contents for WINCAPS III
Page 1: ...Programming Support Tool WINCAPSIII GUIDE...
Page 18: ...vi CONTENTS...
Page 64: ...46 Chapter 3 Starting Up Shutting Down...
Page 196: ...178 Chapter 10 Appendices...
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