Dalsa Piranha 3 P3-80-08k40-00-R, Руководство пользователя

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Piranha 3 User Manual
Teledyne DALSA 03-032-10216-06
37
Set up the camera operating environment
(i.e. line rate, exposure, offset, gain, etc.)
Set the calibration sample size using
the command css. It is recommended that
you use the default setting.
Perform FPN calculation
Perform PRNU calculation
1. Stop all light from entering the camera. (Tip: Cover lens with a lens cap.)
2. Verify that the output signal level is within range by issuing the command
or
. If there are too many zeros in the output data (more than 6.25%
of output data within the roi) , increase the analog offset ( ) or use the
automated algorithm . If the average of the pixels is too high for your
application, reduce the analog offset or gain level ( ).
3. Issue the command . The camera will respond with OK> (if no error occurs).
FPN calculation automatically calibrates FPN coefficients and digital offset.
4. After the calibration is complete, you should save these settings to non-volatile
memory so they will be reusable on reboot. To do so, issue the commands
and .
5. To verify output, enable the FPN coefficients using the command .
You should see close to zero output.
gl gla
sao
cao 0
sag
ccf
wfc
wus
epc 1 0
i
1. Place a white reference in front of the camera.
2. Verify that the output signal level is within range by issuing the command
or
. If the signal level is too low, increase your light level, adjust the analog
gain ( ) or use the automated algorithm .
DALSA recommends a target value of about 80% of saturation. If you change
the gain, FPN coefficients should be recalculated.
3. Issue the command
. The camera will respond with OK>( if no error occurs).
4. After the calculation is complete, you can save these settings to non-volatile
memory so they will be remembered after power-down and direction change.
To do so, issue the commands
and
5
gl
gla
sag ccg i 0 i
ccp
wpc wus.
. Enable the coefficients using the command, . epc 1 1
Perform PRNU calculation next to determine the multiplication
factors required to bring each pixel to the required value (balance target) for
flat, white output.
Set the region of interest to include all
of the image’s pixels of importance using
the command roi x1 y1 x2 y2. You can use
the default if you want to calibrate all pixels.
Note: All commands listed above are described in detail in the following sections in the order
that they should be performed.
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