Pixel Sensitivity Correction - IAI SW-8000M-PMCL User Manual

Pixel Sensitivity Correction

Correct variations between the sensorʼs pixels.
Calibration must be performed within the camera and correction data must be created
beforehand. DSNU (PixelBlackCorrect) / PRNU (PixelGainCorrect) can be reduced using that
correction data. We recommend performing calibration and creating correction data whenever
the line rate setting or Analog base gain setting or vertical binning setting are changed
significantly.
*Correction data is saved for DSNU (PixelBlackCorrect) / PRNU (PixelGainCorrect) according to the
conditions adjusted at the factory.
*A single correction data entry can be saved on the camera for a each user.
When calibration is performed, the correction data is saved to the non-volatile ROM at the same time.
PRNU Correction (PixedlGainCorrect)
PRNU (photo response non-uniformity) is a variation between pixels generated by the sensor
under bright conditions. If the line rate is slowed or a long exposure time is set, the dark
current in the sensor may change and the state of the PRNU may change.
[Correction procedure]
1. Specify the user area to save the gain correction value with [PixelGainCorrect] of [JAICustomControl].
2. Gain correction data is automatically generated by [PixelGainDirect] of [JAICustomControl] and saved
in the user area specified in 1.
3. You can check the execution result of gain correction by [PixelGainDetectStatus] of [JAICustomControl].
DSNU Correction (PixelBlackCorrect)
DSNU (dark signal non-uniformity) is a variation between pixels in the dark areas generated
by the sensor. If the line rate is slowed or a long exposure time is set, the dark current in
the sensor may change and the state of the DSNU may change.
Black Level
[Correction procedure]
1. Specify the user area to save the black level correction value with [PixelBlackCorrect] of
[JAICustomControl].
2. Black level correction data is automatically generated by [PixelBlackDirect] in [JAICustomControl] and
saved in the user area specified in 1.
3. You can check the execution result of black level correction by [PixelBlackDetectStatus] of
[JAICustomControl].
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SW-8000M-PMCL