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tech
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p
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m
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tim
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d
g
aso
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p
r
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p
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r
k
in
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s
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d
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p
r
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v
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f
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k
s
to
p
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s
p
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v
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cc
u
p
an
c
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in
r
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al
-
tim
e.
W
h
en
ev
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we'
v
e
to
p
ar
k
a
ca
r
with
in
th
e
p
ar
k
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n
g
s
tr
u
ctu
r
e,
we'
v
e
to
m
an
u
ally
l
o
o
k
f
o
r
a
p
ar
k
in
g
s
lo
t.
T
h
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tr
ick
y
in
cr
ea
s
es
wh
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th
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p
ar
k
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g
o
r
g
an
izatio
n
is
f
u
ll
o
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m
u
lti
-
s
to
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ied
.
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h
is
o
r
ig
in
ates
tr
af
f
ic
co
n
tr
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llin
g
d
if
f
ic
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lties
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d
av
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id
ab
le
tim
e
f
ee
d
in
g
in
b
last
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c
h
s
.
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ce
,
th
e
p
r
ev
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s
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tem
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m
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m
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ito
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m
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en
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o
b
tain
a
b
le
s
p
ac
es
with
in
th
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p
ar
k
in
g
lo
t.
All
th
is
ca
u
s
es
in
co
n
v
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ce
f
o
r
th
e
p
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p
le.
W
e
f
ac
e
v
ar
io
u
s
p
r
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b
lem
s
ass
o
ciate
d
with
ca
r
p
a
r
k
in
g
li
k
e
th
e
wa
y
to
co
n
tr
o
l
th
e
am
o
u
n
t
o
f
th
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ca
r
with
in
th
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ar
k
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n
g
zo
n
e,
m
o
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ito
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in
g
th
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m
o
v
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e
n
t
o
f
th
e
ca
r
in
/
o
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ts
id
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th
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k
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g
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n
e
,
ch
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wh
eth
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th
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e'
s
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ar
ea
in
s
id
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f
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m
o
r
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r
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r
n
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t
an
d
th
er
e
f
o
r
e
t
h
e
s
af
ety
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o
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ar
k
.
I
’
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im
p
lem
en
ted
a
s
en
s
ib
le
s
y
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tem
b
y
u
s
in
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v
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s
tech
n
o
lo
g
ies
an
d
ad
v
an
ce
d
r
esear
ch
[
1
]
.
T
h
e
s
m
ar
t
p
ar
k
in
g
s
y
s
tem
i
s
im
p
lem
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ir
o
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ts
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s
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wh
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o
lv
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is
s
u
es f
ac
ed
with
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th
e
d
a
y
-
to
-
d
ay
ac
tiv
ities
.
T
h
e
m
o
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t
id
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eh
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d
th
e
s
m
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t
ca
r
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ar
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t
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th
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f
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th
e
n
u
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b
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f
s
lo
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f
r
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th
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ein
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ea
.
My
r
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m
m
e
n
d
ed
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ce
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th
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tim
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tak
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elp
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[
2
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T
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ata
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u
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n
d
lin
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d
ata
s
to
r
ag
e,
p
r
o
ce
s
s
in
g
,
an
d
clien
t
in
ter
f
ac
es [
3
]
. My
r
ec
o
m
m
en
d
ed
s
y
s
tem
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s
es im
ag
e
p
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ANPR
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t th
e
Evaluation Warning : The document was created with Spire.PDF for Python.
I
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I
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Ap
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J
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108
licen
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r
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I
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also
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ca
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late
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wag
es
au
to
m
a
tic
ally
[
4
]
-
[
6
]
.
T
h
e
u
tili
za
tio
n
o
f
iOS
tech
n
o
lo
g
y
co
m
b
in
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with
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wir
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p
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lem
s
[
7
]
.
I
n
s
ec
tio
n
2
w
e
talk
ab
o
u
t
th
e
liter
atu
r
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r
e
v
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Sectio
n
3
p
r
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th
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s
m
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ca
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k
in
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s
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s
tem
’
s
im
p
lem
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tatio
n
d
etails an
d
d
e
s
cr
ib
es h
o
w
th
e
s
y
s
tem
w
o
r
k
s
.
Sectio
n
4
ar
e
ab
o
u
t th
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id
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ataset.
Sectio
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5
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my
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6
co
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.
2.
L
I
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T
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E
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VI
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W
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h
e
s
u
cc
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d
in
g
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o
m
e
p
ap
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at
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ef
er
en
ce
d
f
o
r
th
e
d
ev
elo
p
m
e
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t
.
a.
“Au
to
m
atic
Mu
ltil
ev
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C
ar
Par
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in
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Sy
s
tem
”
i
n
I
n
t.
J
.
o
f
E
l
ec
tr
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an
d
Mic
r
o
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R
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I
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Gu
p
ta
A.
,
J
aiswar
A.
,
Ag
ar
wal
Ha.
,
Sh
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C
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.
[
1
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I
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th
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ticle,
th
e
au
th
o
r
s
h
a
v
e
p
r
esen
te
d
an
d
lab
eled
th
e
id
ea
o
f
an
“a
u
to
m
atic
ca
r
p
ar
k
in
g
s
y
s
tem
”,
wh
ic
h
ca
n
i
n
ev
itab
ly
s
en
s
e
th
e
en
tr
an
ce
a
n
d
leav
in
g
o
f
th
e
ca
r
s
,
n
u
m
b
e
r
o
f
ca
r
s
s
h
o
wn
o
n
th
e
L
C
D.
T
h
is
au
t
o
m
ated
ca
r
p
ar
k
i
n
g
s
y
s
tem
d
ec
r
ea
s
es
th
e
tim
e
co
n
s
u
m
e
d
to
c
h
ec
k
t
h
e
s
p
ac
e
f
o
r
th
e
ca
r
s
.
At
th
i
s
p
o
in
t,
th
e
au
t
h
o
r
s
h
av
e
ad
v
is
ed
th
e
u
s
e
o
f
s
en
s
o
r
s
to
s
en
s
e
th
e
ex
is
ten
ce
o
f
th
e
ca
r
.
b.
“Sm
ar
t Par
k
in
g
Sy
s
tem
with
I
m
ag
e
Pro
ce
s
s
in
g
C
ap
ab
ilit
y
”,
I
.
J
.
I
n
tellig
en
t
Sy
s
tem
s
,
Ap
p
.
,
2
0
1
2
,
3
,
4
1
-
4
7
av
ailab
le
o
n
lin
e
Ap
2
0
1
2
in
ME
C
S
b
y
R
ez
a,
M.
F.
I
s
m
ail,
A.
A.
R
o
k
o
n
i,
M.
A.
R
Sar
k
ar
[
2
]
,
[
5
]
,
[
6
]
,
[
7
]
.
T
h
is
ar
ticle
h
a
s
p
r
esen
ted
th
e
s
m
ar
t
p
a
r
k
in
g
s
y
s
tem
s
wh
ich
tak
e
th
e
in
f
o
ab
o
u
t
v
ac
an
t
p
ar
k
in
g
s
p
ac
es,
p
r
o
ce
s
s
it,
an
d
th
en
p
lace
th
e
ca
r
at
an
ass
u
r
ed
s
p
o
t.
As
well,
th
e
au
th
o
r
s
h
av
e
a
n
n
o
u
n
ce
d
a
n
id
ea
o
f
an
o
p
h
th
alm
ic
ch
ar
a
cter
r
ec
o
g
n
itio
n
tech
n
iq
u
e,
i.e
.
,
“AN
PR
”
f
o
r
licen
s
e
p
late
r
ec
o
g
n
itio
n
o
f
v
e
h
icles.
c.
“A
n
d
r
o
id
-
b
ased
Sm
ar
t
Par
k
in
g
Sy
s
tem
”
in
I
n
t.
J
.
o
f
I
n
n
o
v
a
tiv
e
R
esear
ch
in
C
o
m
p
u
ter
E
n
g
g
Vo
l.
3
,
Ma
y
2
0
1
5
b
y
Pallav
i
M.
,
R
ad
h
a
De.
,
Sam
ik
s
h
a
Na.
,
Sh
u
b
h
a
n
g
i
M.
,
Sh
r
ad
d
h
a
Sa.
[
3
]
.
in
t
h
is
ar
ticle,
th
e
au
th
o
r
s
h
av
e
o
f
f
er
e
d
a
p
lan
f
o
r
an
“An
d
r
o
id
-
b
ased
s
m
ar
t
Pa
r
k
in
g
Sy
s
tem
”
th
at
co
n
t
r
o
ls
th
e
s
u
m
o
f
ca
r
s
to
b
e
p
a
r
k
ed
i
n
th
e
s
elec
ted
p
a
r
k
in
g
z
o
n
e.
T
h
is
is
co
m
p
leted
b
y
co
m
p
u
ter
izin
g
th
e
p
ar
k
in
g
an
d
u
n
lo
ad
in
g
o
f
th
e
v
e
h
icle
with
t
h
e
aid
o
f
an
An
d
r
o
id
A
p
p
licatio
n
.
An
An
d
r
o
id
ap
p
licatio
n
will
aid
t
h
e
o
p
er
ato
r
to
ca
tch
o
u
t
th
e
p
r
ec
is
e
p
ar
k
in
g
s
lo
t
ass
ig
n
ed
to
h
im
in
th
e
p
a
r
k
in
g
z
o
n
e.
I
n
f
o
r
m
atio
n
will
b
e
r
ea
d
l
o
ca
lly
.
C
o
m
m
an
d
s
to
th
e
ass
ig
n
ed
p
ar
k
in
g
s
lo
t w
ill b
e
d
is
p
lay
ed
to
t
h
e
o
p
er
at
o
r
[
3
]
.
d.
“ASPS
u
s
in
g
in
ter
n
et
o
f
th
in
g
s
(
I
o
T
)
”
in
I
n
t.
J
o
u
r
n
al
o
f
Scien
tific
an
d
R
esear
ch
Pu
b
licatio
n
s
,
Vo
l.
5
,
No
.
1
2
,
Dec
2
0
1
5
6
2
9
I
SS
N
2
2
5
0
-
3
1
5
3
b
y
Mr
.
B
asav
ar
aju
S.
R
[
4
]
.
I
n
th
is
p
u
b
licatio
n
,
t
h
e
au
th
o
r
h
as
p
r
esen
ted
an
id
ea
o
f
th
e
in
ter
n
et
o
f
th
in
g
s
(
I
o
T
)
wh
ich
s
h
o
ws
a
v
ig
o
r
o
u
s
r
o
le
in
attac
h
in
g
th
e
ad
jace
n
t
en
v
ir
o
n
m
en
tal
k
its
to
th
e
s
et
u
p
.
T
h
e
Au
th
o
r
h
as r
ec
o
m
m
e
n
d
ed
th
e
u
s
e
o
f
g
r
o
u
p
in
g
s
o
f
I
o
T
lik
e
d
etec
tin
g
,
p
r
o
ce
s
s
in
g
as
well
as
co
n
n
ec
tiv
ity
o
f
d
ata.
Similar
ly
,
th
e
au
th
o
r
p
r
esen
ted
a
p
lan
f
o
r
a
s
m
ar
t
p
ar
k
in
g
s
y
s
tem
b
y
cr
ea
tin
g
th
e
u
s
e
o
f
I
o
T
v
iab
le
h
/w
s
u
ch
as Ar
d
u
in
o
UNO
m
icr
o
co
n
tr
o
ll
er
wh
ich
co
n
s
u
m
es les
s
p
o
wer
.
3.
I
M
P
L
E
M
E
NT
A
T
I
O
N
D
E
T
AIL
S
3
.
1
.
Sy
s
t
em
o
utline
T
h
e
s
y
s
tem
s
tr
u
ctu
r
al
d
esig
n
d
is
p
lay
s
th
e
d
iag
r
am
o
f
th
e
s
m
ar
t
p
ar
k
in
g
s
y
s
tem
.
At
th
e
en
tr
an
ce
p
o
in
t,
wh
en
th
e
ca
r
ar
r
i
v
es
at
th
e
p
ar
k
in
g
lo
t,
web
ca
m
er
a
tak
es
th
e
im
ag
e
o
f
licen
s
e
p
lates,
an
d
th
e
im
ag
e
p
r
o
ce
s
s
in
g
en
tity
is
u
s
ed
to
tr
an
s
f
o
r
m
it
in
to
tex
t
lay
o
u
t,
an
d
it
is
u
s
ed
to
ass
ig
n
a
p
ar
k
in
g
s
lo
t
wh
ich
is
th
en
k
ep
t
in
to
d
atab
an
k
.
W
h
en
t
h
e
v
eh
icle
is
p
ar
k
ed
in
th
e
ass
ig
n
ed
p
a
r
k
i
n
g
s
lo
t,
th
en
s
en
s
in
g
u
n
it
p
er
c
eiv
es
th
e
ex
is
ten
ce
o
f
a
v
eh
icle
i
n
th
e
p
ar
k
in
g
s
lo
t
[
4
]
.
T
h
e
R
asp
b
er
r
y
Pi
u
n
it
t
h
en
p
r
o
ce
s
s
es
th
is
r
aw
d
ata
an
d
h
o
ld
it
in
to
a
d
atab
ase
th
r
o
u
g
h
th
e
in
t
er
n
et
v
ia
E
th
er
n
et
Po
r
t
.
Fig
u
r
e
1
g
r
a
p
h
y
ca
lly
s
h
o
ws all
th
e
th
in
g
s
[
4
]
.
T
h
e
iOS
ap
p
licatio
n
o
f
f
er
s
t
h
e
p
r
ec
is
e
r
o
u
te
o
f
t
h
e
ass
ig
n
ed
p
a
r
k
in
g
s
lo
t
to
th
e
o
p
er
ato
r
.
T
h
e
ap
p
licatio
n
th
en
p
r
o
ce
e
d
s
th
e
ass
ig
n
ed
p
ar
k
in
g
s
lo
t
n
u
m
b
er
as
an
in
p
u
t
an
d
s
h
o
ws
th
e
r
o
u
te
th
at
th
e
o
p
er
ato
r
n
ee
d
s
to
t
r
ac
k
t
o
to
u
ch
th
e
p
ar
k
in
g
s
lo
t.
T
h
e
d
ata
is
r
etr
iev
ed
lo
ca
lly
.
Fig
u
r
e
2
g
r
ap
h
ically
s
h
o
ws
h
o
w
th
e
iOS
ap
p
licatio
n
wo
r
k
s
[
3
]
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t J Ad
v
Ap
p
l Sci
I
SS
N:
2252
-
8
8
1
4
iPa
r
k:
a
u
to
ma
ted
s
ma
r
t p
a
r
kin
g
s
ystem
(
R
a
h
ma
n
A
tiq
u
r
)
109
Fig
u
r
e
1
.
Sy
s
tem
m
o
d
el
o
f
r
ec
o
m
m
en
d
e
d
s
m
ar
t
ca
r
p
ar
k
in
g
s
y
s
tem
Fig
u
r
e
2
.
iOS a
p
p
licatio
n
3
.
2
.
Sect
io
ns
T
h
e
r
ec
o
m
m
en
d
e
d
s
y
s
tem
is
alien
ated
in
to
f
o
ll
o
win
g
f
iv
e
s
ec
tio
n
s
:
a.
P
er
ce
iv
ing
p
a
rt
s
T
h
e
u
ltra
s
o
n
ic
s
en
s
o
r
s
ar
e
c
ast
-
o
f
f
to
s
en
s
e
th
e
ex
is
ten
ce
o
f
th
e
v
eh
icle
.
Ultr
aso
n
ic
s
en
s
o
r
s
ar
e
v
icin
ity
s
en
s
o
r
s
.
T
h
ese
s
en
s
o
r
s
s
en
s
e
th
e
ex
is
ten
ce
o
f
th
e
s
o
m
atic
o
b
ject
with
o
u
t
co
m
in
g
in
co
m
m
u
n
icatio
n
with
th
at
o
b
ject,
s
o
th
e
life
cy
cle
o
f
th
ese
s
en
s
o
r
s
i
s
g
r
ea
ter
[
8
]
.
I
n
th
is
r
ec
o
m
m
en
d
ed
s
y
s
tem
,
we
u
s
e
H
C
-
SR
0
4
u
ltra
s
o
n
ic
d
is
tan
ce
ca
lcu
latin
g
s
en
s
o
r
wh
ich
is
co
m
p
eten
t
to
s
en
s
e
an
o
b
ject
at
d
is
tan
ce
co
v
er
e
d
f
r
o
m
1
.
5
cm
to
5
0
.
5
cm
.
Ultr
aso
n
ic
s
en
s
o
r
en
tails
tr
an
s
m
itter
,
r
ec
eiv
er
,
an
d
r
eg
u
lato
r
u
n
it
with
a
tr
ig
g
er
,
ec
h
o
,
an
d
I
/O
p
in
ch
es.
T
h
e
d
ata
r
estra
in
ed
b
y
t
h
e
s
en
s
o
r
s
is
co
m
p
o
s
ed
[
9
]
.
b.
Ra
s
pb
er
ry
P
i dev
ice
I
t
is
th
e
g
en
er
al
-
p
u
r
p
o
s
e
co
m
p
u
ter
u
n
it,
wh
ic
h
p
r
o
ce
s
s
es
th
e
d
ata
co
m
p
o
s
ed
b
y
s
en
s
o
r
s
an
d
b
r
in
g
s
u
p
to
d
ate
th
e
d
atab
ase.
T
h
e
r
esu
ltan
t
m
o
d
i
f
icatio
n
s
ar
e
r
e
d
ir
ec
ted
in
th
e
d
atab
ase
a
n
d
s
h
o
wn
o
n
th
e
f
r
o
n
t
ter
m
in
atio
n
[1
0
]
.
T
h
e
R
asp
b
e
r
r
y
Pi
u
n
it
p
r
o
ce
s
s
es
th
e
d
ata
d
ir
ec
ted
f
r
o
m
t
h
e
s
en
s
o
r
s
t
h
en
s
en
d
s
it
to
t
h
e
d
atab
ase
with
E
th
er
n
et
p
o
r
ts
u
s
in
g
th
e
in
ter
n
et.
T
h
e
d
at
a
d
ir
ec
ted
b
y
t
h
e
s
en
s
o
r
s
ar
e
an
alo
g
d
ata.
T
h
e
R
asp
b
er
r
y
Pi
u
n
it
tr
an
s
f
o
r
m
s
t
h
at
r
aw
an
alo
g
d
ata
in
t
o
a
d
ig
ital
lay
o
u
t
[
1
1
]
.
T
h
e
d
ig
ital
d
a
ta
is
ca
s
t
-
o
f
f
an
d
a
d
ef
au
lt
v
a
r
iety
f
o
r
ca
r
p
ar
k
in
g
is
ag
r
ee
d
u
p
o
n
.
A
p
r
ed
ef
in
e
d
r
an
g
e
is
ass
o
ciate
d
with
th
e
r
an
g
e
r
e
s
tr
ain
e
d
b
y
th
e
s
en
s
o
r
s
.
Dep
en
d
in
g
o
n
th
is
s
tan
d
in
g
o
f
a
p
ar
k
in
g
l
o
t is d
e
ter
m
in
ed
.
c.
E
t
hernet
po
rt
s
Fo
r
lin
k
in
g
th
e
R
asp
b
er
r
y
P
i
u
n
it
to
th
e
d
atab
ase,
R
asp
b
er
r
y
Pi’s
e
th
er
n
et
p
o
r
t
is
u
s
ed
.
T
h
e
R
asp
b
er
r
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e
th
er
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et
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n
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R
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s
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it
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An
e
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ich
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ity
to
th
e
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ter
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et
o
v
er
t
h
e
eth
er
n
et
[
1
2
]
.
T
h
e
e
th
er
n
et
p
o
r
t
d
o
in
g
s
as
a
g
ate
way
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o
r
th
e
ar
r
a
n
g
em
e
n
t
wh
i
ch
is
u
s
ef
u
l
to
co
n
tact
o
n
lin
e
r
ep
o
s
ito
r
ies.
I
h
av
e
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
: 2
2
5
2
-
8
8
1
4
I
n
t J Ad
v
Ap
p
l Sci
,
Vo
l.
10
,
No
.
2
,
J
u
n
e
2
0
2
1
:
1
0
7
–
1
1
4
110
u
s
ed
s
tan
d
ar
d
e
th
er
n
et
lib
r
a
r
i
es
d
eliv
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ed
b
y
th
e
R
asp
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er
r
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Pi
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n
it
to
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d
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d
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t
h
e
in
f
o
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atio
n
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h
e
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n
it is
ass
o
ciate
d
with
th
e
d
atab
ase
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ia
th
e
i
n
ter
n
et
[
1
3
]
.
d.
I
m
a
g
e
pro
ce
s
s
ing
I
h
av
e
u
s
ed
a
m
eth
o
d
k
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o
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“RF
I
D
r
ea
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er
”
in
m
y
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ec
o
m
m
en
d
ed
s
ch
em
e.
T
h
e
R
FID
r
ea
d
er
is
a
d
ev
ice
th
at
u
s
ag
es
o
p
tical
ch
a
r
ac
ter
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o
g
n
itio
n
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n
im
a
g
es
t
o
r
ea
d
ca
r
r
e
g
is
tr
atio
n
p
lates
[
1
4
]
.
W
ith
th
e
h
elp
o
f
an
in
b
u
ilt
R
FID
ca
m
er
a,
th
e
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tem
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ca
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e
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r
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o
f
th
e
n
u
m
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e
r
p
late
o
f
t
h
e
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r
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an
d
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h
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e
d
es
ig
n
ed
a
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d
e
th
at
tr
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s
f
o
r
m
s
it
in
to
tex
t
f
o
r
m
at
wh
ich
i
s
f
u
r
th
er
k
e
p
t
in
th
e
d
atab
ase
in
ev
itab
ly
[
1
5
]
-
[
1
7
]
.
T
h
e
jav
aa
n
p
r
.
ja
r
f
ile
is
ca
s
t
-
o
f
f
f
o
r
im
ag
e
p
r
o
ce
s
s
in
g
.
T
h
is
f
ile
co
m
p
r
is
es
n
u
m
er
o
u
s
in
b
u
ilt
lib
r
ar
ies
th
at
ar
e
u
s
ed
f
o
r
m
atch
in
g
an
d
p
r
o
ce
s
s
in
g
th
e
im
ag
e
[
1
8
]
-
[
2
1
]
.
T
h
e
R
FID
I
m
ag
e
r
etr
ac
tio
n
tech
n
iq
u
e
co
m
p
r
is
es
o
f
f
o
llo
win
g
s
tep
s
:
−
Nu
m
b
er
p
late
r
eg
io
n
d
etec
tio
n
,
−
Plate
f
r
ag
m
en
tatio
n
,
−
Featu
r
e
m
in
in
g
a
n
d
s
tan
d
ar
d
iz
atio
n
o
f
c
h
ar
ac
ter
s
,
−
R
ec
o
g
n
itio
n
o
f
ch
ar
ac
ter
s
.
e.
iO
S
a
pp
lica
t
io
n
An
iOS
ap
p
licatio
n
is
d
ev
elo
p
ed
u
s
in
g
E
clip
s
e.
T
h
e
iOS
ap
p
licatio
n
aid
s
th
e
o
p
e
r
ato
r
to
f
i
n
d
o
u
t
th
e
p
r
ec
is
e
p
ar
k
in
g
s
lo
t
ass
ig
n
ed
to
h
im
/h
er
in
th
e
p
ar
k
in
g
z
o
n
e.
Data
is
r
etr
iev
ed
lo
ca
lly
.
I
n
s
tr
u
ctio
n
s
to
th
e
ass
ig
n
ed
p
ar
k
in
g
s
lo
t a
r
e
d
is
p
l
ay
ed
to
th
e
o
p
er
at
o
r
[
2
2
]
.
3
.
3
.
Alg
o
rit
hm
T
h
er
e
ar
e
s
ev
e
n
b
asic a
lg
o
r
ith
m
s
th
at
th
e
s
o
f
twar
e
n
ee
d
s
f
o
r
r
ec
o
g
n
izin
g
a
licen
s
e
p
late:
−
Plate
lo
ca
lizatio
n
–
T
h
is
m
eth
o
d
is
liab
le
f
o
r
f
i
n
d
in
g
an
d
s
ep
a
r
atin
g
th
e
p
late
o
n
th
e
im
a
g
e.
−
Plate
p
o
s
itio
n
in
g
an
d
s
izin
g
–
T
h
is
m
eth
o
d
p
a
y
s
f
o
r
th
e
s
k
ew
o
f
th
e
p
late
an
d
am
en
d
s
th
e
d
i
m
en
s
io
n
s
to
th
e
o
b
lig
ato
r
y
d
im
en
s
io
n
.
−
No
r
m
aliza
tio
n
–
T
h
is
m
eth
o
d
m
o
d
if
ies th
e
b
r
i
g
h
tn
ess
,
co
n
tr
ast o
f
th
e
p
ictu
r
e
.
−
C
h
ar
ac
ter
s
eg
m
en
tatio
n
–
T
h
is
m
eth
o
d
is
ca
s
t
-
o
f
f
t
o
f
in
d
in
d
i
v
id
u
al
ch
ar
ac
te
r
s
o
n
th
e
p
lates o
f
t
h
e
v
e
h
icle
.
−
Op
tical
ch
ar
ac
ter
r
ec
o
g
n
itio
n
.
−
Sy
n
tactica
l/Geo
m
etr
ical
an
aly
s
is
–
T
h
is
m
eth
o
d
is
ca
s
t
-
o
f
f
ch
ec
k
ch
ar
ac
ter
s
an
d
p
o
s
itio
n
s
ag
ain
s
t
co
u
n
tr
y
-
s
p
ec
if
ic
in
s
tr
u
ctio
n
s
.
−
T
h
e
av
er
ag
in
g
o
f
th
e
r
ec
o
g
n
iz
ed
v
alu
e
o
v
er
s
ev
er
al
f
ield
s
/i
m
ag
es is
co
m
p
leted
to
y
ield
a
m
o
r
e
d
ep
e
n
d
ab
le
an
d
ass
u
r
ed
o
u
tco
m
e.
Par
ticu
l
ar
ly
in
th
e
ca
s
e
o
f
an
y
s
o
lo
im
ag
e
m
ay
co
v
er
an
ec
h
o
ed
lig
h
t
f
lash
,
b
e
p
ar
tly
b
u
r
ied
,
o
r
o
t
h
er
s
h
o
r
t
-
ter
m
o
u
t
co
m
e
s
.
3
.
4
.
E
x
perim
ent
a
l set
up
T
h
e
s
u
cc
ee
d
in
g
s
ar
e
th
e
h
ar
d
war
e
an
d
s
o
f
twar
e
r
eq
u
ests
f
o
r
th
e
r
ec
o
m
m
e
n
d
ed
s
ch
em
e:
a.
H
a
rdwa
re
re
qu
ests
−
R
asp
b
er
r
y
Pi 4
b
o
a
r
d
−
HC
-
SR
0
4
Ultr
aso
n
ic
Par
k
in
g
Sen
s
o
r
s
−
R
E
E
S5
2
Fin
est US
B
AB
C
ab
le
−
R
FID
r
ea
d
er
C
am
er
a
b.
So
f
t
wa
re
re
qu
irem
ent
s
−
Ar
d
u
in
o
I
DE
in
s
talled
R
asp
b
er
r
y
Pi4
d
e
v
ice
−
J
DK
-
E
clip
s
e
−
Data
b
an
k
-
My
SQL
4.
DATAS
E
T
T
h
e
v
alu
es
f
r
o
m
th
e
u
ltra
s
o
n
ic
p
ar
k
in
g
s
en
s
o
r
s
ar
e
a
ch
u
n
k
o
f
th
e
d
ataset.
T
h
e
co
n
ce
n
tr
ate
d
r
an
g
e
o
f
th
e
s
en
s
o
r
s
is
5
0
.
5
cm
.
T
h
e
b
lin
d
m
ess
f
o
r
th
e
s
en
s
o
r
s
is
1
.
5
cm
.
T
h
e
d
atab
a
n
k
h
as
p
ass
e
d
f
o
r
th
e
tim
e
at
wh
ich
th
e
v
e
h
icle
was
p
ar
k
e
d
,
th
e
p
a
r
k
in
g
s
lo
t
n
o
.
an
d
s
tan
d
in
g
[
2
3
]
.
T
h
e
s
tan
d
in
g
o
f
a
p
ar
k
in
g
s
lo
t
ca
n
b
e
em
p
ty
(
0
)
,
b
o
o
k
e
d
(
1
)
,
p
a
r
k
ed
(
2
)
,
th
e
in
p
u
t
f
o
r
t
h
e
R
FID
ca
m
er
a
is
an
im
ag
e
o
f
th
e
n
u
m
b
er
p
late.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t J Ad
v
Ap
p
l Sci
I
SS
N:
2252
-
8
8
1
4
iPa
r
k:
a
u
to
ma
ted
s
ma
r
t p
a
r
kin
g
s
ystem
(
R
a
h
ma
n
A
tiq
u
r
)
111
5.
RE
SU
L
T
S AN
D
D
I
SCU
SS
I
O
N
T
h
e
n
ex
t a
r
e
th
e
s
n
ap
s
h
o
ts
f
o
r
th
e
au
to
m
ated
s
m
ar
t
p
ar
k
i
n
g
s
y
s
tem
as sh
o
wn
in
Fig
u
r
e
3
.
Fig
u
r
e
3
.
R
asp
b
er
r
y
Pi in
teg
r
a
ted
a
r
d
u
in
o
m
o
n
ito
r
d
is
p
lay
T
h
e
b
ey
o
n
d
s
cr
ee
n
s
h
o
t
d
is
p
lay
s
s
er
ialized
m
o
n
ito
r
d
is
p
lay
u
s
ed
in
Ar
d
u
in
o
in
teg
r
ated
r
asp
b
er
r
y
p
i4
to
o
l.
W
h
en
a
v
eh
icle
is
p
ar
k
ed
in
th
e
ass
ig
n
ed
p
ar
k
i
n
g
s
lo
t,
th
e
s
er
ialized
m
o
n
ito
r
d
is
p
lay
s
th
e
s
u
p
r
em
e
d
is
tan
ce
o
f
th
e
v
eh
icle
f
r
o
m
u
ltra
s
o
n
ic
p
ar
k
in
g
s
en
s
o
r
s
.
T
h
e
s
cr
ee
n
s
h
o
t
d
is
p
lay
s
s
u
p
r
em
e
d
is
tan
ce
th
at
u
ltra
s
o
n
ic
p
ar
k
in
g
s
en
s
o
r
s
ca
n
s
en
s
e
is
5
1
cm
f
o
r
p
ar
k
in
g
s
lo
t
p
1
,
p
2
,
p
3
,
an
d
p
4
.
Fig
u
r
e
4
,
t
h
is
s
cr
ee
n
s
h
o
t
d
em
o
n
s
tr
ates
p
ar
k
in
g
s
tatu
s
f
o
r
p
ar
k
in
g
s
lo
t
P1
,
P2
,
P3
,
an
d
P4
d
ep
en
d
in
g
u
p
o
n
wh
eth
er
a
v
eh
icle
is
p
ar
k
ed
o
r
n
o
t
.
Fig
u
r
e
4
.
Dis
p
lay
s
th
e
p
a
r
k
in
g
s
tatu
s
Fig
u
r
e
5
,
th
is
s
cr
ee
n
s
h
o
t
d
is
p
lay
s
d
is
tan
ce
o
f
ca
r
s
f
r
o
m
s
en
s
o
r
s
a
t
w
h
at
tim
e
v
eh
icle
is
p
ar
k
ed
i
n
p
ar
k
in
g
s
lo
t
n
u
m
b
er
P3
an
d
P4
.
T
h
er
ef
o
r
e,
it
d
is
p
lay
s
p
ar
k
in
g
s
tatu
s
=1
f
o
r
p
a
r
k
in
g
s
lo
t
P3
an
d
P4
.
Me
an
wh
ile
,
no
v
eh
icles a
r
e
p
a
r
k
ed
in
s
lo
t P1
a
n
d
P2
,
t
h
eir
s
tatu
s
r
u
in
s
u
n
af
f
ec
ted
[
2
4
]
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
: 2
2
5
2
-
8
8
1
4
I
n
t J Ad
v
Ap
p
l Sci
,
Vo
l.
10
,
No
.
2
,
J
u
n
e
2
0
2
1
:
1
0
7
–
1
1
4
112
Fig
u
r
e
5
.
Par
k
i
n
g
s
tatu
s
Fig
u
r
e
6
d
is
p
lay
s
th
e
a
d
m
in
l
o
g
in
s
cr
ee
n
f
r
o
m
w
h
er
e
th
e
a
d
m
in
ca
n
ac
ce
s
s
th
e
wh
o
le
s
y
s
tem
u
s
in
g
iOS
ap
p
s
.
T
h
e
b
el
o
w
s
cr
ee
n
s
h
o
t
d
is
p
lay
s
an
u
n
o
cc
u
p
ie
d
p
a
r
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in
g
lo
t
i
n
th
e
iOS
a
p
p
licatio
n
.
Fro
m
th
e
f
ig
u
r
e
,
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s
ee
th
at
p
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r
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in
g
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ts
P,
P
2
,
P3
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an
d
P4
a
r
e
v
ac
a
n
t
f
o
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e
f
i
r
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RE
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[1]
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De
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9
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2
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3
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.
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