Omron FH-3 Series Reference Manual page 518

Notes on Filtering Setting
If filtering is applied to the image, the area around the image frame will become unstable. When a [Filtering]
processing item has been set in the scene, ensure that measurement ranges, etc. set for other processing items
are not included in the area around the image frame.
The width not included in the measurement range will vary depending on the mask size settings.
• Filter size: 5 × 5
Make settings so that a width around the image frame equal to 2 pixels is not included in the
measurement range.
• Filter size: 3 × 3
Make settings so that a width around the image frame equal to 1 pixels is not included in the
measurement range.
When a partial scan is used to limit the load range
Set so as to not include the image loading range surroundings.
The width that will not be included in the measurement range is the same as the above. (In the following figure,
filter size:5 × 5).
Image read
Background Suppression Level
The images below the lower limit and above the upper limit will be set to the lower and upper limits of brightness,
respectively.
Example) lower limit: 100 upper limit: 220
Measurement object
Background
Only images with a density of 100 to 220 can be measurement objects.
516
Filtering
Temperature of Measurement object
Upper limit: 220
Lower limit: 100
Background concentration
The Measurement region is set within the range
with 2-pixel width a part from borders in screen
(within the dotted line frame)
The 2-pixel area adjacent to the image frame
(the gray area) is not included in the
Measurement region.
The Measurement region is set within the range
with 1-pixel width a part from borders in screen
(within the dotted line frame)
The 1-pixel area adjacent to the image frame
(the gray area) is not included in the
Measurement region.
The Measurement region is set within the range
with 2-pixel width a part from borders in screen
(the dotted line)
The 2-pixel area adjacent to the image frame
(the gray area) is not included in the
measurement region.
[Image after Background suppression]
FH/FZ5 Processing Item Function Reference Manual