Flat Field Category; Flat Field Feature Descriptions - Teledyne Linea 2K CL User Manual

Flat Field Category

The Linea CL Flat Field controls, as shown by CamExpert, groups features used to calibrate the
camera's flat field correction coefficients. Parameters in black are user set in CamExpert or
programmable via an imaging application.
Features listed in the description table but tagged as Invisible are usually for Teledyne DALSA or
third party software usage—not typically needed by end user applications.

Flat Field Feature Descriptions

The following table describes these features along with their view attribute. Additionally the
Standard & View column will indicate which parameter is a member of the DALSA Features Naming
Convention (indicated by DFNC), versus the GenICam Standard Features Naming Convention
(SFNC not shown).
Display Name
Mode
Off
On
Initialize
Calibration Algorithm
Basic
Low Pass Filter
CalibrationTarget
CalibrationSampleSize
2048
4096
ROI Offset X
ROI Width
Calibrate FPN
Calibrate PRNU
Calibrate PRNU Status
Good
Clipping
Time Out
Too Many Outliers
62 • Appendix A: GenICam Commands
Feature & Values
flatfieldCorrectionMode
Initialize
flatfieldCorrectionAlgorithm
Basic
LowPass
flatfieldCalibrationTarget
flatfieldCalibrationSampleSize
Lines_2048
Lines_4096
flatfieldCalibrationROIOffset
flatfieldCalibrationROIWidth
flatfieldCalibrationFPN
flatfieldCalibrationPRNU
flatfieldCalibrationPRNUStatus
Good
Clipping
ExsyncTimeOut
TooManyOutliers
Description
Displays the type of trigger to configure with the
various Trigger features. <RO>
Off Flat field correction is disabled.
On Flat field correction is enabled.
Reset all FPN coefficients to 0 and all flat field
coefficients to 1.
Selects the algorithm to use for calibration of flat
field coefficients.
Direct calculation of coefficients based on average
line values and target value.
A low pass filter is first applied to the average line
values before calculating the coefficients. Use this
algorithm if the calibration target is not uniformly
white or it is not possible to defocus the image.
Because of the low pass filter this algorithm is not
able to correct pixel-to-pixel variations and so it is
preferable to use the "Basic" algorithm.
Sets the target pixel value for the gain (PRNU)
calibration. Ranges are:
8-bit output: 0-255
12-bit output: 0-4095
Sets the number of line to average during a flat
field calibration.
Average 2048 lines.
Average 4096 lines.
Set the starting point of a region of interest where
a flat field calibration will be performed
Sets the width of the region on interest where a
flat field calibration will be performed
Initiates the FPN calibration process.
Initiates the PRNU or Flatfield process.
Returns the PRNU calibration status.
Calibration successful.
Coefficients are clipped to minimum or maximum
value.
Calibration failed due to time out.
Calibration failed because the image is too noisy.
Standard
& View
DFNC
Beginner
DFNC
Beginner
DFNC
Beginner
DFNC
Beginner
DFNC
Beginner
DFNC
Beginner
DFNC
Beginner
DFNC
Beginner
DFNC
Beginner
Linea CL Series Camera