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Advanced Sensors in Pr ecision Manufacturing
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FIGURE 6.13 Three-dimensional coordinates of color in a space.
FIGURE 6.14 Correlation to an absolute color standard.
the relative drift from the standard to be monitored. The advantage is
that more color sensing can be economically distributed across the
target area. When a significant relative deviation is detected, an alert
signal can flag the absolute color sensor to take a reading in the sus-
pect area. If enough storage space is available in a central processing
computer, lookup tables can be constructed to relate the serially com-
municated color sensor readings to a standard color coordinate sys-
tem like the CIE system.
6.3.5 Color Sensor Algorithms
There are two internal software algorithms, or sets of rules, for ana-
lyzing fuzzy logic color sensor data:
