Dsnu Constancy (A503K Only); Shutterline Correction (A503K Only) - Basler WOOD BURNING FIREPLACE Wood Burning Fireplace

3.8 DSNU Constancy (A503k Only)

In theory, when an area scan camera with a digital sensor captures a frame in complete darkness,
all of the pixel values in the frame should be near zero and they should be equal. In practice, slight
variations in the performance of the pixels in the sensor will cause some variation in the pixel
values output from the camera. This variation is known as Dark Signal Non-uniformity (DSNU). In
addition, the DSNU associated with non-overlapped exposure differs from the DSNU associated
with overlapped exposure.
With the DSNU constancy feature enabled, the DSNU associated with non-overlaped exposure
will be replaced and the DSNU associated with overlapped exposure will apply to both non-
overlapped and overlapped exposure. Accordingly, the unwanted difference in the DSNUs will not
become apparent when non-overlapped and overlapped exposure are used in an alternating
fashion.
To prevent a decrease of image quality we do not recommend enabling the DSNU
constancy feature when operating the camera at frame rates of < 30 fps.
You can enable and disable the DSNU constancy feature using either the Camera Configuration
Tool Plus (see section 4.1) or binary commands from within your application to set the camera's
DSNU Constancy and Shutterline Correction Enable register (see section 4.2).
See section 4.2.4.8
Enable register.

3.9 Shutterline Correction (A503k Only)

When the camera operates with overlapped exposure, frame N is still being read out when the
exposure of frame N+1 is triggered.
The shutterline of frame N is the line that is being read out when the exposure of frame N+1 is
triggered. The trigger, however, causes a fluctuation of voltage leading to a decrease of the pixel
values in the shutterline.
With the shutterline correction feature enabled, a value is added to the pixel values to compensate
for the effect of the voltage fluctuation. The value to be added can be set using the Shutterline
Correction register.
You can enable and disable the shutterline correction feature and set a value using either the
Camera Configuration Tool Plus (see section 4.1) or binary commands from within your
application to set the camera's DSNU Constancy and Shutterline Correction Enable register and
the Shutterline Correction register (see section 4.2).
See section 4.2.4.8
Enable register. See section
Basler A500
k
PRELIMINARY
for more information on the DSNU Constancy and Shutterline Correction
for more information on the DSNU Constancy and Shutterline Correction
4.2.4.9 for more information on the Shutterline Correction register.
Basic Operation and Features
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