Dalsa SG-10-01k80 User Manual page 74

74
Notes:
Example:
Performing PRNU Correction to a Camera Calculated Value
Purpose:
Syntax
Notes:
Related Commands:
03-032-10158-04
PRELIMINARY
FPN will be observable in dark conditions and an incorrect FPN
value will be used during PRNU calibration resulting in
incorrect PRNU coefficients.
This algorithm is more robust and repeatable than algorithm 1
because it uses an average pixel value rather than a number
above target. However, this algorithm is slower.
i
Peak target value in a range from 1024 to 4055DN. The target
value must be greater than the current peak output value.
•
Perform all analog adjustments before calibrating PRNU.
•
This command performs the same function as the
command but forces you to enter a target value.
•
Calibrate FPN before calibrating PRNU. If you are not
performing FPN calibration then issue the
coefficients) command and set the
value so that the output is near zero under dark.
•
The QuickCam software that ships with the Spyder3 GigE
camera has a flat field correction wizard. For easy flat field
correction, use the wizard located on the Calibration tab.
cpa 1 600
Performs PRNU correction and eliminates the difference in
responsivity between the most and least sensitive pixel creating a
uniform response to light.
ccp
•
Perform all analog adjustments before calculating PRNU.
•
Perform FPN correction before PRNU correction.
•
If FPN cannot be calibrated, use the
all coefficients to zero, and save them to memory with the
w fc command. You can then adjust the digital offset (
9 3 H
command) to remove some of the FPN.
•
Ensure camera is operating at its expected analog gain,
integration time, and temperature.
•
Refer to C alibrating the Camera to Remove Non-
2 8 5 H
Uniformity (Flat Field Correction)on page
procedural overview on performing flat field correction.
•
To save FPN coefficients after calibration, use the
command. Refer to section
PRNU and FPN Coefficients for details.
•
The QuickCam software that ships with the Spyder3 GigE
camera has a flat field correction wizard. For easy flat
field correction, use the wizard located on the Calibration
tab.
c cf, c pa
9 6 H 9 7 H
Spyder3 GigE User Manual
cpp
(reset pixel
rpc
(set digital offset)
sdo
command to reset
r pc
9 2 H
6 8 for a
2 8 6 H
w pc
9 5 H
A 3.1 Saving and Restoring
2 8 7 H
s do
9 4 H
DALSA