Microscan EZ Match Imager User Manual page 306

Color Detection (EZ Match Color Only)
Hue
Once the basic color is determined, Hue requires that the hue value be within an acceptable
range to declare a match. This color match method provides further distinction between
basic colors.
Hue and Saturation
Saturation provides information on color vibrancy. A highly saturated color is vivid and
intense, while a less saturated color is more muted, as shown in the example below.
Hue, Saturation, and Value
Hue, Saturation, and Value are all used as criteria for determining a color match. This
mode allows for the highest color resolution, and is able to detect different pigments,
shades, and levels of brightness.
A color's brightness can be changed by selecting a different gain or shutter setting, causing
the image to be brighter or darker. This mode is susceptible to large fluctuations in ambient
light, so gain and shutter settings should be determined before performing a cap Learn operation.
White, Black, and Gray Color Detection
White, black, and gray are determined by the level of saturation and brightness (value) of
the color. Regardless of the Color Match Resolution setting, the Saturation and Value
characteristics are examined to determine if the cap color is white, black, or a shade of gray.
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EZ Match User's Manual