
PRELIMINARY
4M Stop Action Camera Manual
36
3.6.5
form
Purpose:
ser defined value and
onsivity between the most and least
ight. Using this
et.
mand to be set to 0
ground subtraction) and the
ssg
command to 4096 (unity
digital gain). The pixel coefficients are disabled (
epc 0 0
) during
the algorithm execution but returned to the state they were prior to
command execution.
Syntax:
Syntax Elemen
PRNU calibration algorithm to use:
Per
ing PRNU Calibration
Performs PRNU calibration to a targeted, u
eliminates the difference in resp
sensitive pixel creating a uniform response to l
command, you must provide a calibration targ
Executing these algorithms causes the
ssb
com
(no back
cpa i i
ts:
i
2
= Calculates the PRNU coefficients using the entered target
value as shown below:
PRNU
Coefficient
=
Target
(AVG
Pixel
Value
)
i
i
The calculation is performed for all senso
are only
cameras. It is important that the target v
parameter) is set to be at least equal to
all cameras so that all pixels can rea
during calibration.
‐
(FPN
+
value)
sdo
i
r pixels but warnings
applied to pixels in the region of interest. This
algorithm is useful for achieving uniform output across multiple
alue (set with the next
the highest pixel across
ch the highest pixel value
i
3DN. The target
output value.
Peak target value in a range from 256 to 101
value must be greater than the current peak
Notes:
. If you are not
hen issue the
rpc
(reset pixel
coefficients) command and set the
sdo
(set digital offset) value
so that the output is near zero under dark.
The
cpa
command is not available when the camera is using the
factory calibrated coefficients (
csn 0
). You must select the user
coefficient set (
csn 1
) before you can perform PRNU
calibration. An error message is returned if you attempt to
perform PRNU calibration when using
csn 0
.
Calibrate FPN before calibrating PRNU
performing FPN calibration t
Example:
cpa 2 700
03-32-10121-09
DALSA