Spyder3 S3-14 and S3-24 Monochrome Camera User's Manual
57
Teledyne DALSA
03-032-20117-01
target. H ow ever, this algorithm is slow er.
i:
Peak target valu e in a range from 1024 to 4055DN . The target
valu e m u st be greater than the cu rrent p eak ou tp u t valu e.
Example
cp a 1 600
Performing PRNU Correction to a Camera Calculated Value
Perform s PRN U correction and elim inates the d ifference in resp onsivity betw een the m ost and least
sensitive p ixel creating a u niform resp onse to light.
Camera Link Command
Parameter
Notes
ccp
Perform all analog ad ju stm ents before calcu lating PRN U.
Perform FPN correction before PRN U correction.
If FPN cannot be calibrated , u se the
rpc
com m and to reset all coefficients to zero,
and save them to m em ory w ith the w fc com m and . You can then ad ju st the
d igital offset (
sdo
com m and ) to rem ove som e of the FPN .
Ensu re cam era is op erating at its exp ected analog gain, integration tim e, and
tem p eratu re.
Refer to Calibrating the Cam era to Rem ove N on -Uniform ity (Flat Field
Correction)on p age 51 for a p roced u ral overview on p erform ing flat field
correction.
To save FPN coefficients after calibration, u se the
wpc
com m and . Refer to section
Saving and Restoring PRN U and FPN Coefficients for d etails.
Example
Setting a Pixel’s PRNU Coefficient
Sets an ind ivid u al p ixel’s PRNU coefficient.
Camera Link Command
Parameter
Description
Notes
sp c i i
i:
The p ixel nu m ber from
1
to
sensor pixel count
.
i:
Coefficient valu e in a range from
0
to
28671
w here:
Example
sp c 1024 10000
PRNU coefficient =
1 +
4096
i
