AiP ABA-001IR, Руководство пользователя, Страница: 38 / 79

SWIR Area Camera Series User’s Manual
(OM170000021A)
- 38 -
8.3. Shading compensation
In the camera, it uses Flat Field Compensation (FFC) for the shading compensation. It compensates Dark
Signal Non-Uniformity (DSNU), Pixel Response Non-Uniformity (PRNU) and the shading occurred by used
lens and lighting in order for the luminance level of the image to be flat on entire area. The two
compensation data can be stored.
command param1
CL ffc
0:Default
1: User set 1
2: User set 2
GV FlatFieldCorrectionSetLoad
command param1
CL ffcsave
1: User set 1
2: User set 2
GV FlatFieldCorrectionSetSave
8.3.1. FFC (Flat Field Correction) setting method
step1
：
Before FFC setting
FFC is required to set in the operating condition. The frame rate, exposure time and peltier temperature
should be set in advance according to conditions. If conditions are changed after the settings, it is
recommended to set again according to new conditions.
As for the setting of Peltier Temperature, it may take time. It is possible to check the current temperature
by “DeviceTemperature” command. Refer to 9.
step2
：
Before execute DSNU compensation
Place a cap on the lens so that no light is input through the lens.
Before compensation
Luminance variance of pixel
Incoming light
Lu
m
in
ab
ce
Each pixel has different
luminance level
After compensation
Lu
m
in
ab
ce
Incoming light
Make each pixel with
uniform luminance level