
ETV
S
y
s
t
e
m
Server Software - User’s
G
u
i
d
e
Page
71
9.1
V
i
d
e
o
A
n
a
l
y
t
i
c
s
C
a
li
b
r
a
t
i
o
n
Before rules
may be added and
configured, the
video
analytics must
be
calibrated for
each
camera to
e
n
s
u
r
e
the proper detection
and
tracking
of
o
b
j
e
c
t
s
.
G
e
n
e
r
a
l
To
reduce
CPU
usage,
Vigil
Server reduces the resolution
of
the
image used
for
A
n
a
l
y
t
i
cs
c
a
l
c
u
l
a
t
i
o
n
s
.
It
i
s
strongly recommended that the
Max
Kernel
R
e
s
o
l
u
t
i
o
n
be
set to
C
I
F
.
I
n
c
r
e
a
s
i
n
g
the
Max
Kernel
R
e
s
o
l
u
t
i
o
n
setting
will only
affect camera
views
with extremely
wide
camera
angles
where
o
b
j
e
c
t
s
are
small
enough
t
h
a
t
they are lost
when
the resolution
is
reduced to
352 x
240
.
Max
Kernel
R
e
s
o
l
u
t
i
o
n
C
I
F
352 x 240
(
r
eco
mm
e
n
d
e
d
)
4
C
I
F
704 x
480
Megapixel
1280 x
1024
Full
R
e
s
o
l
u
t
i
o
n
Full
resolution recorded from the
ca
m
e
r
a
Warning:
I
n
c
r
e
a
s
i
n
g
the
Max
Kernel
R
e
s
o
l
u
t
i
o
n
will
result
in
increased
CPU
usage.
P
l
e
a
s
e
monitor the
CPU usage
c
l
o
s
e
l
y
.
P
e
r
s
p
e
c
t
i
v
e
S
e
tt
i
n
g
s
S
e
l
e
c
t
Overhead Camera
if
the camera
view is
pointed straight down.
S
e
l
e
c
t
P
e
r
s
p
e
c
t
i
v
e
Camera
if
the
c
a
m
e
r
a
is
at
an
angle.
S
e
t
the person
size box
c
a
r
e
f
u
ll
y
;
the accuracy
of
the person
size box will
directly affect
t
h
e
accuracy
of
analytics
r
u
l
e
s
.
Overhead
C
a
m
e
r
a
Overhead Camera’s are
ideal
for
Video
Analytics.
A
d
j
u
s
t
the person
size box
to
show
the average
size of
a
person.
The
analytics
engine uses
the person
size box when
it
is
deciding
if an
o
b
j
e
c
t
is a
person or
a
v
e
h
i
c
l
e
.
Car
size is
automatically determined relative to the person
s
i
z
e
.
P
e
r
s
p
e
c
t
i
v
e
C
a
m
e
r
a
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