Key Points For Adjustment; Stabilizing Measurements - Omron SYSMAC FH Series User Manual

Key Points for Adjustment

This section describes key points for adjustment to improve measurement precision and shorten measurement
time.

Stabilizing Measurements

This section describes key points for adjustment when measurements are not stable. There are two methods for
improving measurement precision: Performing processing of images loaded from the Camera (filtering) or
adjusting settings and parameters.
Adjusting Parameters of Each Processing Item
Adjustment to improve precision and stability depends on the processing item.
Refer to Key Points for Adjustment for individual processing items in the Vision System FH/FZ5 Series
Processing Item Function Reference Manual (Cat No. Z341).
Processing Images (Filtering)
There are cases in which high-precision measurement is impossible, such as when using images loaded from
the Camera that have noise, irregularities, or low contrast or when the background has patterns during defect
measurement.
Refer to Filtering in the Vision System FH/FZ5 Series Processing Item Function Reference Manual (Cat No.
Z341).
When measurement images have
irregularities (searching and location
positioning are not stable)
The Smoothing (Strong and Weak) and Median filter
items are both effective.
• Smoothing (Strong and Weak)
This processing changes the shade of images
so that irregularities are not as easily seen.
Weak Smoothing
Before Processing
• Median
In comparison with smoothing, the Median filter
item allows for irregularities to be hidden
without having to shade the edges of images.
Vision System FH/FZ5 Series
User's Manual (Z340)
Measurement Images That Contain Noise
The Dilate and Erosion filtering items are both
effective.
After Processing
WWW.NNC.IR
• Dilate
When there is dark noise in an image, bright
areas are enlarged to eliminate dark noise.
• Erosion
When there is bright noise in an image, bright
areas are contracted to eliminate bright noise.
Erosion
Before Processing

Key Points for Adjustment

After Processing
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