
46
Figure 30:
Adaptive Bias
Note: The bias evolution calibration is built with factory settings.
If the sensor settings are modified using the advanced
‘set snake xxx’
command, it is not
guarantee that the adaptative bias still work properly.
Also, the value set with the
‘darkoptimlevel’
command is ignored when the adaptative bias is on.
The factory value is used instead. When the adaptative bias is disabled, the darkoptimlevel is restored.
To enable/disable the adaptative bias correction, use the command: “
set adaptbias on
” or “
set
adaptbias off
”
HDR Bias/Flat correction additional information
The HDR mode must be enabled before using buildbias and HDR buildflat commands.
Also, in HDR mode, for flat embedded computation, it is recommended to use the
“set hdr
calibration c1 (or c2)”
command before using HDR buildflat commands.
In ‘calibration c1 (or c2)’ specific modes, the camera operating in HDR mode will send images composed
of pixels acquired using C1 (small) and respectively C2 (large) integration capacitor. These modes are
useful for controlling the level of the flat field applied for flat file correction.
To build manually, externally, the bias and/or flat correction files the use of the “hdr calibration” is
mandatory to get the dark and flat images from the high and low gain capacities used in HDR mode.
Reminder: The correct operation of HDR readout mode requires the activation of the bias
correction.
Using bias/flat correction is easier with the demo software. Furthermore, additional details are
provided in the software demo user manual, notably the use of custom correction files.