Pixel Sensitivity Correction - JAI SW-4000T-10GE User Manual

Pixel Sensitivity Correction

Correct variations between the sensor's pixels.
Calibration must be performed within the camera and correction data must be created
beforehand. DSNU (Pixel Black Correct) / PRNU (Pixel Gain Correct) can be reduced using
that correction data. We recommend performing calibration and creating correction data
whenever the line rate setting is changed significantly.
◇ Correction data is saved for DSNU (Pixel Black Correct) / PRNU (Pixel Gain Correct)
according to the conditions adjusted at the factory. Perform calibration whenever changing
setting, such as the Acquisition Line Rate setting, and use the correction data for DSNU
(Pixel Black Correct) / PRNU (Pixel Gain Correct).
◇ Perform DSNU (Pixel Black Correct) calibration again whenever the exposure time or
analog base gain value is adjusted.
◇ A single correction data entry can be saved on the camera for each user. When calibration
is performed, the correction data is saved to the non-volatile ROM at the same time.
PRNU Correction (Pixel Gain Correct)
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.
DSNU Correction (Pixel Black Correct)
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
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SW-4000T-10GE