User`s manual

Spyder 3 GigE User Manual
03-032-10158-09 DALSA
74
Digital Signal Processing
To optimize camera performance, digital signal processing should be completed after any
analog adjustments.
FPN Correction
Performing FPN Correction
Syntax: Performs FPN correction and eliminates FPN noise by subtracting
away individual pixel dark current.
Syntax:
ccf
Notes:
• Perform all analog and digital adjustments before
performing FPN correction.
• Perform FPN correction before PRNU correction.
• Refer to
285HCalibrating the Camera to Remove Non-Uniformity
(Flat Field Correction)on page
286H71 for a procedural overview
on performing flat field correction.
• To save FPN coefficients after calibration, use the
84Hwfc
command. Refer to section
287HA3.1 Saving and Restoring
PRNU and FPN Coefficients for details.
• The QuickCam software that ships with the Spyder 3 GigE
camera has a flat field correction wizard. For easy flat field
correction, use the wizard located on the Calibration tab.
Related Commands:
85Hccp, 86Hwfc
Example:
ccf
Setting a Pixel’s FPN Coefficient
Purpose: Sets an individual pixel’s FPN coefficient.
Syntax
sfc x i
Syntax Elements:
x
The pixel number from 1 to sensor pixel count.
i
Coefficient value in a range from 0 to 2047 (12 bit LSB).
Example:
sfc 10 50