17-1
Fault Inspection
17
Chapter 17: Fault Inspection
17-1 Outline
Cell
Search area
[Inspection procedures]
Captured image
→
Specify search area
→
Specify a cell
→
Measurement
[Measurement results]
・
Average hue
・
Average saturation
・
Binary area
・
Color degree of match
Purpose
Example
Detect flaws or dirt on a workpiece that color was emphasized using a color filter
function.(Using a gray search function after filtering a color, the controller detects
cells having the maximum density and minimum density in the search area. It can
measure the maximum density difference with all of the area (total difference), a
position that has maximum density difference with an adjacent cell (adjacent
difference).
Application
●
Inspection of whole of color LCD monitor screen
Detect flaws or dirt on a workpiece that are the same color as was emphasized
using a color filter function.