Calibrating The Camera - Teledyne Linea User Manual

Linea 2K and 4K Monochrome Line Scan Camera User's Manual

Calibrating the Camera

Important N ote: to ensu re best resu lts, the cond itions u nd er w hich you calibrate the cam era (e.g.
tem p eratu re and illu m ination) shou ld be as close to th e actu al op erating cond itions as p ossib le. .
-
Video
Calibrate FPN
flatfieldCalibrationFPN
( ccf )
Calibration
The goal of calibration is to p rod u ce a u niform , w hite balanced and , if requ ired , color corrected im age at
the d esired level ou t of the cam era w hen it is im aging a u niform w hite object, u sing the op tical setu p of
the u ser's ap p lication.
The u ser shou ld configu re the cam era to u se the EXSYN C and exp osu re tim ing they d esire p lu s ad ju st the
light level for norm al op eration. The lens shou ld be at the d esired m agnification, ap ertu re and be in focu s.
As the w hite reference located at the object p lane w ill be in focu s, any featu res on its su rface (e.g. d u st,
Teledyne DALSA
Figure 13: Flat Field Calibration in CamExpert
Digital Processing
x
Calibrate
ImageEnhancementStrength
PRNU
flatfieldCorrectionMode
flatfieldCalibrationPRNU
flatfieldCorrectionAlgorithm
( cpa , ffm )
Figure 14: Camera Calibration Process.
-
+
Filter Threshold
Offset
( sft ) BlackLevel
( ssb )
x
Output
Video
Gain
Gain
( ssg )
"Output _ LUT"
03-032-20206-00
39