Vision Master Calibration
748
FH/FZ5 Processing Item Function Reference Manual
6 Select whether or not to output
distortion compensation parameters in
the Distortion type area.
Distortion compensation function
Because compensation is performed using the same algorithm with the high-precision calibration
processing item in this processing item, sampling points are biased toward the center of the screen when
the effective range of the field of view is extremely narrow and image compensation cannot be performed
normally.
Widen the effective range of the field of view so that sampling points are located in the entire screen and
perform calibration again.
Setting item
Setting value
[Factory default]
Description
Trapezoidal
distortion
•
[Checked]
• Unchecked
Select whether or not to output trapezoidal compensation parameters set
for each data.
Lens distortion
• [Checked]
• Unchecked
Select whether or not to output lens
distortion
compensation parameters
set for each data.
• Distortion compensation function is not applied for X, Y, Xθ, Yθ, θX an
d
θY Stages. Therefore measurement
accuracy may be decreased if surface workpiece is on and the optic axis are at an incline to each other. Set the
camera optic axis perpendicular to the workpiece surface, including move axis.
Limit on the number of calibration data when distortion compensation is turned on
For the FZ5-L3/6 series models, the number of distortion compensation calibration data (when
compensa
t
ion for either trapezoidal distortion or lens distortion has been specified) that can be used in the same
scene group is limited according to the camera in use. Do not exceed this limitation. You can delete created
distortion compensation data by redoing calibration with both settings unselected. In the case of the FH series/FZ5-
800 series/FZ5-1100 series/FZ5-1200 series, the number of processing items is not limited and can be registered as
long as there is sufficient free memory.
If the amount of used memory increases and
the a
mount of free memory becomes insufficient, it may cause errors in
operation mode switching or in adding Processing Units into the measurement flow. Please check the memory
consumption when you create scenes.
If the effective range of the field of view is extremely narrow, a
circular virtual image shown left may appear.
Important
Type of
controller
0.3 megapixel
camera
Intelligent
Compact
Digital Camera
2 megapixel
camera
5 megapixel
camera
0.3 megapixel
camera (FH)
2 megapixel
camera (FH)
4 megapixel
camera (FH)
FZ5-L35ï‚£
Or
FZ5-6
30 28 7 2 --- --- ---
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