Camera Operation
•
37
Firmware Release
05
Visibility
Invisible
Access
Read-Write
Notes
Hidden register to support feature streaming.
Name
streamingAspectRatio
Name Space
Custom
Firmware Release
05
Visibility
Invisible
Access
Read-Write
Notes
Hidden register to support feature streaming.
Gain and Black Level Control Details
The Falcon2 series of cameras provide gain and black level adjustments. Depending on the
model of camera adjustments are available at the sensor as an analog variable and / or in
the digital domain. The gain and black level controls can make small compensations to the
acquisition in situations where lighting varies and the lens iris cannot be easily adjusted.
Optimal gain and black level adjustments maximizes the Falcon2 dynamic range for
individual imaging situations. The user can evaluate Gain and Black Level by using
CamExpert.
Features and limitations are described below:
•
Analog Black Level offset is expressed as a digital number providing a ± offset from
the factory setting. The factory setting optimized the black level offset for maximum
dynamic range under controlled ideal dark conditions.
•
Analog Gain is expressed as a multiplication factor applied at the sensor level, before
any FFC. The increased gain increases the sensor’s dynamic range but with a non-
proportional increase in noise.
•
Global FPN provides a constant component to the FPN Coefficients. This value is
calibrated in the factory but it can be adjusted relative to the factory setting. See the
BlackLevel register’s DigitalAll1 [Digital Before FFC] option.
•
Color Gain (Color cameras only) is expressed as a multiplication factor applied after
the Analog Gain and any FFC stages. The camera stores a color gain value for each
color in the Bayer pattern (Red, Green-Red, Green-Blue and Blue) at each input bit
depth (8 bpp, 9 bpp, 10 bpp). This is to accommodate the PRNU FFC calibration.
