Omron F400 - INTRODUCTION Introduction Manual page 43

Selecting the Registered Color
Step1
Select a color to be expressed brightly in gray image.
"Hue of registered color - Hue of measured color" will be converted to 256 levels in gray image.
Make output dark for hue of measured color as far as registered color.
Converting the color bar into color
circle will make it easy to under-
stand.
Switching the Color Band
Step2
Centering the registered color, convert
the colors of +/-180 degrees into gray
image of 256 gradations.
Step3
Adjusting the Range of Chroma
Chroma means the vividness of color. Color of lower tone will be converted into darker.
Chroma
Monotone
42
How to set of colorgray filter
(Hue: STEP 1 to 2, Saturation: STEP 3)
Registered color (255)
(0)
High
Low
Registered color
Low
Low
High
+/- 90 degrees
Centering the registered color, convert the colors of
+/-90 degrees into gray image of 256 gradations.
Other colors will be converted into black.
Registered color (255)
(0)
Higher tone than upper limit of the range will be white.
Upper limit
Gray image of 256 gradations
Lower limit
Lower tone than lower limit will be black.
Hue of registered color
- Hue of measured color
High
(0)