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Falcon4 86M Cameras
Contents
59
PRNU: Auto
Color Gain
PRNUautoColorGain
The calculation equations are the same as
above, however the target value is
determined by the camera over the Area of
Interest controlled by the entries of the
AutoBrightnessXXX parameters.
The target value is
Targetx = Averagex*1.2
Where x is the specific color/ or mono.
In this mode the white balance gains are
stored with the PRNU coefficients and are
set as WBgain most responsive color =1,
WBgainColor1/2= MostresponsiveColor /
(Color1/2Avg)
Gain Calibration
Target Selector
flatfieldColorTargetSelector
Selects the color PRNU target that the
Gain Calibration Target is applied to. (RW)
Mono cameras do not have this selector.
DFNC
Expert
TargetRed
TargetGreen
TargetBlue
Gain Calibration
Target
flatfieldCalibrationTarget
Sets the target pixel value for the gain
(PRNU) calibration for the respective color
when in calibration mode, method 1. (RW)
It is specified as a percentage of the
output range (for example, 2048 DN for 12
bits = 50%).
Range is 0 to 100 %, as float.
All three colors need to be entered for the
color camera and a single value entered
for the monochrome camera. It is
recommended the
flatfieldCalibrationTarget =
colorAverage*1.2.
PRNU calculation method 2 uses image
statistics to calculate the target values and
flatfieldCalibrationTarget is not used.
For Color Cameras: method 1 sets the
white balance gain factors to unity for the
PRNU coefficient set, while Method 2
stores the white balance gain factors
needed to achieve white balance.
DFNC
Expert
Calibration
Sample Size
flatfieldCalibrationSampleSize
The number of images to average to
perform the calibration.(RW)
DFNC
Beginner
Average 256
images
Avg256
Average 256 images. Recommended for
PRNU calculation.
Average 128
images
Avg128
Average 128 images. Recommended for
FPN calculation.
Average 64
images
Avg64
Average 64 images.
Average 32
images
Avg32
Average 32 images.
Average 16
images
Avg16
Average 16 images.
Read-Write when in Calibration Mode.