Pike
Technical
Manual
V5.2.3
199
Controlling image capture
Controlling
image
capture
Smear reduction (not Pike F-1100, F-1600)
Smear reduction: definition
Definition
Smear
is
an
undesirable
CCD
sensor
artifact
creating
a
vertical
bright
line
that
extends
above
and
below
a
bright
spot
in
an
image.
Definition
Smear
reduction
is
a
function
implemented
in
hardware
in
the
camera
itself
to
compensate
for
smear.
Smear reduction: how it works
To
reduce
smear
a
reference
line
is
used.
This
reference
line
is
built
from
the
mean
value
of
the
so-called
black
lines
(two
lines
before
image
start).
The
reference
line
is
subtracted
from
every
line
of
the
whole
image.
But
how
will
this
reduce
smearing?
The
point
is:
black
lines
have
no
image
information
but
are
also
affected
from
smearing.
Thus
the
smearing
effect
itself
is
isolated
and
can
be
reduced
in
the
whole
image.
The
two
additional
black
lines
and
the
calculated
anti-smear
values
do
not
lower
the
transfer
rates
significantly
due
to
hardware
implementation.
Smear reduction: switch on/off in register and SmartView
To
switch
on/off
smear
reduction
in
advanced
registers,
see
In
SmartView:
Edit
settings
Adv3
tab
(
Smear
reduction
Enable)
Note
FirePackage
offers
additional
and
independent
checks
to
be
performed
for
the
purpose
of
image
integrity.
Details
can
be
found
in
the
respective
documentation.
Note
More
information:
The
handling
of
the
SIS
feature
is
fully
described
in
the
322.