Pike
Technical
Manual
V5.2.3
166
Description of the data path
Description
of
the
data
path
Color correction: formula
Before
converting
to
the
YUV
format,
color
correction
on
all
color
models
is
carried
out
after
Bayer
demosaicing
via
a
matrix
as
follows:
GretagMacbeth ColorChecker
Sensor-specific
coefficients
C
xy
are
scientifically
generated
to
ensure
that
GretagMacbeth™
ColorChecker®-colors
are
displayed
with
highest
color
fidelity
and
color
balance.
These
coefficients
are
stored
in
user
set
0
and
can
not
be
overwritten
(factory
setting).
Changing color correction coefficients
You
can
change
the
color-correction
coefficients
according
to
your
own
needs.
Changes
are
stored
in
the
user
settings.
To
change
the
color-correction
coefficients
in
SmartView
,
go
to
Adv3
tab.
Formula 4: Color correction
Note
•
A
number
of
1000
equals
a
color
correction
coefficient
of
1.
•
To
obtain
an
identity
matrix
set
values
of
1000
for
the
diagonal
elements
an
0
for
all
others.
As
a
result
you
get
colors
like
in
the
RAW
modes.
•
The
sums
of
all
rows
should
be
equal
to
each
other.
If
not,
you
get
tinted
images.
•
Color
correction
values
range
-1000
to
+2000
and
are
signed
32
bit.
•
In
order
for
white
balance
to
work
properly
ensure
that
the
row
sum
equals
1000.
•
Each
row
should
sum
up
to
1000.
If
not,
images
are
less
or
more
colorful.
•
The
maximum
row
sum
is
limited
to
2000.
Note
Configuration
To
configure
the
color-correction
coefficients
in
an
advanced
register,
see
310.
red*
Crr
red
Cgr
green
Cbr
blue
+
+
=
green*
Crg
red
Cgg
green
Cbg
blue
+
+
=
blue*
Crb
red
Cgb
green
Cbb
blue
+
+
=
