30
2-5 Getting the clear image
Main Operation
2-5-4
Background Suppression (BGS Level)
What is the Background Suppression?
This function removes unwanted background from the image.
You can set the lower limit and the higher limit. And the density within two
limits are convert into “0 to 255” tones.
Important
You can set the different pre-processing for each position correction and mea-
surement item.
MENU mode - [Setup] - [Item] - [Img Adj] - [Select camera] - [BGS level]
Example: Set the lower limit value to 100 and upper limit vaue to 220.
L[ 060] H[ 200]
BGS level
0.Pattern
Lower limit value: 100
Upper limit value: 220
Background
density
Measurement target density
0
255
Image before background is removed
Image with background removed
• All parts of the image having a density of 100 or
less are not treated as the measurement target
and are converted to 0.
• Only parts of the image within the density value
range of 100 to 220 are treated as the measure-
ment target and are extended to tones within the
range 0 to 255.
Original image
255
0
255
Converted image
Lower limit
Higher limit
Z01E-EN-01+ZFX+SettingGuide.book Seite 30 Mittwoch, 13. Februar 2008 2:38 14
