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683
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lu
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n
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ly
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t
8
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.
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n
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m
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m
,
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ra
ti
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n
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le
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n
d
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n
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to
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o
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to
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ig
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tal
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g
with
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ix
e
d
re
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li
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e
n
g
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n
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e
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re
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tes
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b
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rd
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rles
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g
e
n
v
ir
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n
m
e
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t.
K
ey
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s
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r
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ile
Au
g
m
en
ted
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lity
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d
u
ca
tio
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E
n
g
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ee
r
in
g
d
e
v
ices
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r
k
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b
ased
tec
h
n
iq
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e
T
h
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s
a
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o
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e
n
a
c
c
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ss
a
rticle
u
n
d
e
r th
e
CC B
Y
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SA
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se
.
C
o
r
r
e
s
p
o
nd
ing
A
uth
o
r
:
Mu
r
izah
Kass
im
I
n
s
titu
te
f
o
r
B
ig
Data
An
aly
tic
s
an
d
Ar
tific
ial
I
n
tellig
en
ce
(
I
B
DAAI
)
,
Un
iv
er
s
iti T
ek
n
o
lo
g
i M
AR
A
4
0
4
5
0
,
Sh
ah
Alam
,
Selan
g
o
r
,
Ma
lay
s
ia
E
m
ail: m
u
r
izah
@
u
itm
.
ed
u
.
m
y
1.
I
NT
RO
D
UCT
I
O
N
T
ec
h
n
o
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y
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as
b
ec
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y
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m
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t
as
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ct
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c
ati
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.
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h
e
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s
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f
t
ec
h
n
o
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y
in
th
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class
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as
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.
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1
]
.
A
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ca
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[
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.
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AR
ar
e
to
an
al
y
z
e
c
h
a
n
g
es
i
n
c
o
l
lect
e
d
ca
m
e
r
a
f
r
a
m
es
a
n
d
t
o
ac
c
u
r
at
el
y
i
n
te
g
r
a
te
v
ir
t
u
al
d
a
ta
i
n
t
o
th
e
c
am
er
a
im
a
g
e
d
ep
e
n
d
in
g
o
n
t
r
a
ck
in
g
r
es
u
lts
.
A
m
a
r
k
e
r
-
b
ase
d
t
ec
h
n
i
q
u
e
p
r
o
v
i
d
es
r
e
lia
b
l
e
t
r
a
c
k
i
n
g
u
tili
zi
n
g
v
is
u
al
m
a
r
k
e
r
s
i
n
a
c
am
er
a
s
ce
n
e
[
5
]
.
T
h
e
m
o
m
en
t
t
h
e
p
r
o
g
r
am
m
e
r
b
e
g
i
n
s
u
ti
liz
in
g
a
g
a
d
g
e
t
t
h
at
s
u
p
p
o
r
t
s
t
h
e
m
a
r
k
e
r
-
b
as
e
d
AR
m
et
h
o
d
,
t
h
e
im
a
g
e
o
f
t
h
e
p
h
y
s
i
ca
l
e
n
v
i
r
o
n
m
e
n
t
c
o
ll
ec
t
ed
b
y
a
ca
m
e
r
a
is
c
o
n
v
e
r
te
d
i
n
t
o
a
g
r
e
y
-
s
ca
l
e
i
m
a
g
e
t
o
s
p
e
ed
u
p
t
h
e
i
m
a
g
e
p
r
o
c
ess
in
g
m
et
h
o
d
[
6
]
.
M
ar
k
er
-
b
ase
d
AR
r
e
q
u
i
r
es
th
e
d
ep
lo
y
m
e
n
t
o
f
a
m
a
r
k
e
r
t
o
a
cti
v
a
te
a
u
g
m
en
tat
i
o
n
.
Ma
r
k
e
r
s
a
r
e
d
is
ti
n
c
t
p
atte
r
n
s
t
h
a
t
AR
ca
m
e
r
as
c
an
i
n
s
t
an
t
ly
i
d
en
tif
y
a
n
d
an
al
y
ze
.
T
h
e
y
ar
e
als
o
v
is
u
a
ll
y
i
n
d
e
p
en
d
e
n
t
o
f
t
h
ei
r
e
n
v
ir
o
n
m
e
n
t.
F
o
r
u
s
er
s
t
o
b
e
a
b
l
e
t
o
s
ca
n
m
a
r
k
e
r
s
f
r
o
m
th
e
ir
d
e
v
i
ce
'
s
c
am
er
a
f
ee
d
,
it
t
y
p
ic
all
y
r
eq
u
i
r
es
s
o
f
twa
r
e
i
n
t
h
e
f
o
r
m
o
f
an
a
p
p
l
i
ca
ti
o
n
.
T
h
is
r
esear
ch
p
r
esen
ts
a
p
r
o
t
o
ty
p
e
d
e
v
elo
p
m
e
n
t
an
d
an
aly
s
is
o
f
Mo
b
ile
3
D
au
g
m
en
ted
r
ea
lity
o
n
en
g
in
ee
r
in
g
d
e
v
ices
as
ed
u
ca
t
io
n
to
o
ls
in
en
g
in
ee
r
in
g
e
d
u
c
atio
n
.
User
s
ca
n
in
ter
ac
t
with
th
e
3
D
en
g
in
ee
r
in
g
d
ev
ice
v
ia
th
eir
an
d
r
o
i
d
m
o
b
i
le
u
s
in
g
AR
to
o
b
tain
in
f
o
r
m
atio
n
ab
o
u
t
th
e
d
ev
ices.
T
h
e
m
o
b
ile
ca
m
er
a
was
u
s
ed
to
s
ca
n
th
e
m
ar
k
er
s
to
p
r
o
ject
th
e
3
D
im
ag
e
o
f
th
e
en
g
in
ee
r
in
g
d
ev
ice
an
d
its
in
f
o
r
m
atio
n
.
T
h
e
AR
ap
p
licatio
n
was
b
u
ilt
u
s
in
g
Un
ity
3
D.
T
h
is
m
ar
k
e
r
was
cr
ea
ted
u
s
in
g
Vu
f
o
r
ia.
T
h
e
m
o
d
el
wo
u
ld
f
ir
s
t
b
e
cr
ea
ted
u
s
in
g
B
len
d
er
An
im
ati
o
n
T
o
o
ls
b
ef
o
r
e
ex
p
o
r
tin
g
t
h
e
m
o
d
el
to
Un
ity
3
D.
T
h
e
id
en
ti
f
ied
p
r
o
b
lem
s
th
at
led
to
th
is
r
esear
ch
ar
e,
th
e
f
i
r
s
t
o
n
e
is
id
en
tific
atio
n
an
d
c
h
ar
ac
ter
is
tics
o
f
en
g
in
ee
r
in
g
eq
u
ip
m
en
t
ar
e
less
p
r
o
v
id
e
d
in
to
d
ay
'
s
tech
n
o
lo
g
ical
en
v
ir
o
n
m
en
t,
wh
ich
p
lace
s
o
b
s
o
lete
lear
n
in
g
co
n
ce
p
ts
,
ted
io
u
s
an
d
u
n
ap
p
ea
lin
g
two
-
way
lear
n
i
n
g
,
an
d
teac
h
i
n
g
,
at
th
e
f
o
r
ef
r
o
n
t.
T
h
is
b
o
r
e
ex
p
er
ien
ce
d
s
tu
d
en
ts
wh
o
ar
e
well
-
eq
u
ip
p
e
d
with
s
m
ar
tp
h
o
n
es
a
n
d
elec
tr
o
n
ic
g
ad
g
ets.
B
esid
es
th
at,
an
u
n
attr
ac
tiv
e
ap
p
r
o
ac
h
to
ed
u
ca
tio
n
,
b
o
th
in
an
d
o
u
t
o
f
th
e
class
r
o
o
m
,
i
n
clu
d
in
g
t
h
r
o
u
g
h
o
n
lin
e
class
es.
T
h
e
p
r
o
ce
s
s
o
f
lear
n
in
g
a
n
d
teac
h
in
g
m
ay
b
e
co
m
p
licated
an
d
d
if
f
icu
lt
to
co
m
p
r
eh
e
n
d
.
L
astl
y
,
lack
o
f
ex
p
o
s
u
r
e
t
o
cu
r
r
en
t
tech
n
o
lo
g
ical
ad
v
an
ce
m
en
t
lead
s
to
p
r
esen
ta
tio
n
o
f
a
tr
ad
itio
n
al
an
d
b
o
r
in
g
in
f
o
r
m
a
tio
n
d
eliv
er
y
m
eth
o
d
.
T
h
is
b
r
o
ad
e
n
ed
th
e
g
ap
b
etwe
en
n
ew
AR
tech
n
o
lo
g
y
o
n
m
o
b
ile
ap
p
s
an
d
s
o
ciety
.
I
n
r
esp
o
n
s
e
to
th
e
id
en
tifie
d
p
r
o
b
lem
s
,
th
er
e
ar
e
th
r
ee
o
b
jectiv
es
th
at
wer
e
in
iti
ated
.
T
h
e
f
ir
s
t
o
n
e
is
to
d
esig
n
3
D
an
im
atio
n
s
o
f
AR
o
n
en
g
i
n
ee
r
in
g
eq
u
ip
m
e
n
t
to
d
is
p
lay
its
in
f
o
r
m
atio
n
an
d
d
escr
ip
tio
n
b
y
u
s
in
g
Un
ity
3
D
s
o
f
twar
e.
Nex
t,
to
d
e
v
elo
p
an
AR
p
latf
o
r
m
f
o
r
th
e
en
g
in
ee
r
i
n
g
eq
u
ip
m
en
t
3
D
m
o
d
els
th
at
will
v
is
u
alize
th
e
in
f
o
r
m
atio
n
an
d
d
escr
ip
tio
n
o
f
th
e
eq
u
ip
m
en
t
o
n
An
d
r
o
id
m
o
b
ile
s
y
s
tem
f
o
r
s
tu
d
en
ts
an
d
ed
u
ca
to
r
s
th
at
ar
e
ad
d
ictiv
e
an
d
en
g
ag
in
g
with
a
h
ig
h
d
e
g
r
ee
o
f
in
ter
ac
tiv
ity
[
7
]
.
L
astl
y
,
to
an
aly
ze
th
e
3
D
AR
en
g
in
ee
r
in
g
m
o
b
ile
s
y
s
tem
p
er
f
o
r
m
an
ce
b
ased
o
n
tech
n
ical
p
ar
am
eter
s
an
aly
s
is
p
lu
s
u
s
er
ex
p
er
ien
ce
s
f
ee
d
b
ac
k
ev
alu
ati
o
n
b
ased
o
n
th
e
d
ev
elo
p
m
en
t
au
g
m
en
ted
r
ea
lity
o
f
en
g
i
n
ee
r
in
g
d
ev
ice
(
AR
E
D
)
.
Mo
b
ile
au
g
m
en
ted
r
ea
lity
(
MA
R
)
h
as
b
ec
o
m
e
a
r
ea
lity
d
u
e
to
th
e
p
r
o
life
r
ati
o
n
o
f
s
m
ar
tp
h
o
n
es,
tab
lets
,
an
d
wea
r
ab
les,
af
f
o
r
d
ab
le
I
n
ter
n
et
co
n
n
ec
tiv
ity
,
an
d
ad
v
an
ce
s
in
co
o
p
er
ativ
e
n
et
wo
r
k
in
g
,
c
o
m
p
u
te
r
v
is
io
n
,
an
d
m
o
b
ile
clo
u
d
c
o
m
p
u
tin
g
[
8
]
.
MA
R
ap
p
licatio
n
s
h
av
e
p
r
o
life
r
ated
r
a
p
id
l
y
in
g
lo
b
al
m
o
b
ile
ap
p
licatio
n
m
ar
k
ets
b
ec
au
s
e
o
f
th
e
av
ailab
ilit
y
o
f
f
r
ee
s
o
f
twar
e
d
ev
elo
p
m
e
n
t
k
its
an
d
co
n
ten
t
p
r
o
d
u
ctio
n
to
o
ls
,
s
o
m
e
o
f
w
h
i
ch
allo
w
n
o
n
-
p
r
o
g
r
a
m
m
er
s
to
b
u
ild
MA
R
ap
p
s
[
9
]
.
M
o
b
ile
d
e
v
ices
h
av
e
a
wid
e
r
a
n
g
e
o
f
s
en
s
o
r
s
an
d
ca
n
r
ec
eiv
e
h
elp
f
r
o
m
r
em
o
te
s
er
v
er
s
to
co
n
s
tr
u
ct
m
o
r
e
co
m
p
licated
MA
R
ap
p
licatio
n
s
.
B
ased
o
n
p
r
o
x
im
ity
s
en
s
o
r
s
,
v
is
u
al
r
ef
er
en
ce
s
,
m
ap
s
,
a
n
d
p
r
ec
is
e
e
n
v
ir
o
n
m
en
tal
i
n
f
o
r
m
atio
n
,
MA
R
d
ev
ices
ca
n
d
eliv
er
a
lo
t
o
f
r
ea
l
-
tim
e
in
f
o
r
m
atio
n
.
GPS
an
d
d
etailed
m
ap
p
i
n
g
m
ak
e
n
av
ig
atio
n
ea
s
ier
.
V
is
u
al
an
aly
s
is
an
d
g
r
o
win
g
im
ag
e
c
o
llectio
n
s
en
ab
le
o
b
ject
r
ec
o
g
n
itio
n
.
A
d
v
an
ce
d
g
r
ap
h
ics
s
h
o
w
u
s
er
in
ter
f
ac
es.
T
h
ese
q
u
alities
allo
w
r
ea
l
-
tim
e
m
er
g
in
g
o
f
th
e
ac
tu
al
an
d
v
ir
tu
a
l
wo
r
ld
s
an
d
in
f
o
r
m
atio
n
o
v
er
lay
o
f
th
e
u
s
er
'
s
en
v
ir
o
n
m
en
t
f
o
r
v
a
r
io
u
s
p
u
r
p
o
s
es
[
1
0
]
.
T
h
r
ee
r
ec
en
t
te
ch
n
o
lo
g
ical
d
ev
elo
p
m
en
ts
h
av
e
b
o
o
s
ted
MA
R
r
esear
ch
.
First
is
th
e
r
is
e
o
f
d
ed
icate
d
MA
R
d
ev
ices
lik
e
Mi
cr
o
s
o
f
t
Ho
lo
len
s
,
Go
o
g
le
Glass
,
Ma
g
ic
L
ea
p
,
an
d
E
p
s
o
n
Mo
v
er
i
o
B
T
-
3
0
0
,
1
co
m
b
in
ed
with
p
o
wer
f
u
l
d
ev
el
o
p
er
to
o
ls
lik
e
AR
C
o
r
e
an
d
AR
Kit.
Mo
b
ile
d
ev
ice
p
er
f
o
r
m
an
ce
an
d
s
en
s
o
r
in
te
g
r
atio
n
ad
v
an
ce
m
en
ts
.
T
h
ir
d
,
co
m
p
u
ter
v
is
io
n
(
C
V)
im
p
r
o
v
em
e
n
ts
.
MA
R
b
en
ef
its
en
ter
tain
m
en
t,
ad
v
er
ti
s
in
g
,
ed
u
ca
tio
n
,
n
av
i
g
atio
n
,
m
ain
ten
an
ce
,
an
d
m
o
r
e
[
1
1
]
.
R
esear
ch
er
s
in
d
icate
d
th
at
AR
h
as
g
r
ea
t
p
o
ten
tial
an
d
b
en
e
f
its
in
teac
h
in
g
an
d
lear
n
in
g
c
o
n
tex
ts
d
u
e
to
its
r
ap
id
g
r
o
wth
[
1
2
]
.
I
n
a
th
r
ee
-
d
im
e
n
s
io
n
al
wo
r
l
d
,
we
u
s
e
two
-
d
im
en
s
io
n
al
m
ed
ia
f
o
r
te
ac
h
in
g
.
AR
with
ed
u
ca
tio
n
al
co
n
ten
t
m
ak
es
le
ar
n
in
g
f
u
n
an
d
ef
f
ec
tiv
e
[
1
3
]
.
Ma
n
y
AR
ap
p
licatio
n
s
ar
e
r
elate
d
to
ed
u
ca
tio
n
[
1
4
]
.
AR
is
u
s
ed
in
m
an
y
s
ec
to
r
s
lik
e
m
ed
ical
an
d
e
n
g
in
ee
r
in
g
w
h
er
e
AR
g
r
ap
h
i
cs
v
is
u
alize
th
r
ee
-
d
im
en
s
io
n
al
o
b
jects.
A
s
tu
d
y
f
o
u
n
d
th
at
AR
m
o
d
els
en
g
ag
e
p
u
p
ils
m
o
r
e
th
a
n
s
cr
ee
n
-
b
a
s
ed
o
r
th
o
g
o
n
al
an
d
g
r
ap
h
ical
g
r
a
p
h
ics.
E
n
g
in
ee
r
in
g
g
r
ap
h
ic
co
u
r
s
es
b
en
ef
it
f
r
o
m
th
e
tan
g
ib
le
an
d
AR
ap
p
r
o
ac
h
.
An
o
th
er
ex
p
er
im
en
t
c
r
ea
ted
a
m
ec
h
an
i
ca
l
en
g
in
ee
r
in
g
teac
h
i
n
g
ap
p
li
ca
tio
n
.
I
t
em
p
lo
y
s
W
eb
3
D
a
n
d
AR
s
ce
n
ar
io
s
to
v
is
u
alize
3
D
th
in
g
s
to
p
r
o
m
o
t
e
lear
n
in
g
.
T
h
e
ex
p
e
r
im
en
t
m
ay
b
e
e
d
u
ca
tio
n
al
[
1
5
]
.
Dig
ita
l
g
r
ap
h
ics
is
o
n
e
o
f
th
e
f
astes
t
-
ch
an
g
in
g
I
T
f
ield
s
.
C
h
ar
ac
ter
s
ar
e
s
ig
n
if
ican
t
to
co
m
p
u
ter
g
r
ap
h
ics
r
esear
c
h
er
s
b
ec
au
s
e
th
e
y
co
n
v
ey
in
f
o
r
m
atio
n
to
v
iewe
r
s
[
1
6
]
.
Un
ity
T
ec
h
n
o
lo
g
ie
s
'
Un
ity
3
D
en
g
in
e
cr
ea
tes
v
id
eo
g
am
es
an
d
s
im
u
latio
n
s
f
o
r
co
m
p
u
ter
s
,
c
o
n
s
o
les,
an
d
m
o
b
ile
d
ev
ices
u
s
in
g
an
ea
s
y
-
to
-
u
s
e
p
r
o
g
r
a
m
m
in
g
e
n
v
ir
o
n
m
en
t
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t J I
n
f
&
C
o
m
m
u
n
T
ec
h
n
o
l
I
SS
N:
2252
-
8
7
7
6
A
n
d
r
o
id
mo
b
ile
3
D
a
u
g
men
te
d
r
ea
lity e
n
g
in
ee
r
in
g
d
ev
ices d
esig
n
u
s
in
g
…
(
M
o
h
a
ma
d
A
z
im
I
b
r
a
h
im
)
685
[
1
7
]
.
T
h
e
en
g
in
e
c
r
ea
tes
3
D,
2
D,
i
n
ter
ac
tiv
e
s
im
u
latio
n
s
,
an
d
o
th
e
r
e
x
p
er
ien
ce
s
.
Fil
m
,
au
to
m
o
b
iles
,
ar
ch
itectu
r
e,
en
g
in
ee
r
in
g
,
co
n
s
tr
u
ctio
n
,
an
d
ed
u
ca
tio
n
h
a
v
e
u
s
ed
th
e
en
g
in
e
o
u
ts
id
e
o
f
v
id
eo
g
am
es.
I
t'
s
ea
s
y
f
o
r
b
e
g
in
n
e
r
s
b
u
t
p
o
wer
f
u
l
f
o
r
ex
p
er
ts
.
Un
ity
lets
d
ev
elo
p
e
r
s
g
en
er
ate
ap
p
licatio
n
s
f
o
r
PC
,
Ma
c,
W
eb
,
I
OS,
An
d
r
o
id
,
a
n
d
W
in
d
o
ws
Ph
o
n
e
with
o
u
t
in
f
r
astru
ctu
r
e
ch
a
n
g
es.
AR
ap
p
s
an
d
g
am
es
m
ay
b
e
cr
ea
ted
with
th
e
Un
ity
3
D
Vu
f
o
r
ia
SDK
p
lu
g
-
i
n
[
1
8
]
.
I
t
lets
Vu
f
o
r
ia
SDK
ex
ten
s
io
n
p
lu
g
-
in
s
d
etec
t
an
d
tr
a
ck
u
n
d
er
th
e
p
o
r
ts
,
en
ab
lin
g
AR
ap
p
s
an
d
g
am
es.
I
t
h
as
n
u
m
er
o
u
s
g
am
e
d
ev
elo
p
m
en
t
b
o
x
f
u
n
ctio
n
s
.
Un
i
ty
3
D
ca
n
ad
d
s
u
n
s
h
in
e,
f
o
g
,
win
d
,
s
k
y
b
o
x
,
wate
r
,
a
m
b
ien
t
m
u
s
ic,
an
d
an
im
ated
v
id
eo
to
th
e
v
ir
tu
al
s
ce
n
e
[
1
9
]
.
I
t
is
a
p
r
o
f
ess
io
n
al
g
am
e
e
n
g
in
e
in
clu
d
i
n
g
im
ag
e
s
,
au
d
io
,
an
d
a
lev
el
d
ev
el
o
p
m
en
t
in
ter
f
ac
e.
De
v
elo
p
er
s
m
ay
cr
ea
te
3
D
v
id
eo
g
am
es,
ar
ch
itectu
r
al
v
is
u
aliza
tio
n
,
r
ea
l
-
tim
e
3
D
an
im
atio
n
,
an
d
m
o
b
ile,
d
esk
to
p
,
o
n
lin
e,
an
d
co
n
s
o
le
ap
p
s
u
s
in
g
th
e
Un
ity
3
D
en
g
in
e
[
2
0
]
.
Un
ity
u
s
es
C
#
.
Un
ity
u
s
es
o
n
ly
o
b
ject
-
o
r
ien
ted
s
c
r
ip
tin
g
lan
g
u
ag
es.
Var
iab
les,
f
u
n
ctio
n
s
,
a
n
d
class
es a
r
e
th
e
m
ain
s
y
n
tax
in
s
cr
ip
tin
g
lan
g
u
a
g
es [
2
1
]
.
An
d
r
o
id
h
as
b
ec
o
m
e
th
e
wo
r
ld
'
s
m
o
s
t
p
o
p
u
lar
o
p
er
atin
g
s
y
s
tem
f
o
r
m
an
y
r
ea
s
o
n
s
.
An
d
r
o
id
Stu
d
io
,
Go
o
g
le'
s
o
f
f
icial
I
DE
,
is
b
ase
d
o
n
J
etB
r
ain
s
'
I
n
telliJ
I
DE
A
s
o
f
twar
e
an
d
d
esig
n
ed
f
o
r
An
d
r
o
id
p
r
o
g
r
am
m
in
g
.
An
d
r
o
id
Stu
d
io
s
u
p
p
o
r
ts
Ma
c,
W
in
d
o
ws,
an
d
L
in
u
x
[
2
2
]
.
An
d
r
o
id
Stu
d
io
f
ea
tu
r
es
co
d
e
tem
p
lates,
Gr
ad
le
-
b
ased
b
u
ild
s
y
s
tem
,
Gith
u
b
in
teg
r
atio
n
,
a
n
d
a
n
em
u
lato
r
to
d
ev
elo
p
A
n
d
r
o
id
ap
p
s
[
2
3
]
.
A
PK
f
iles
o
f
An
d
r
o
i
d
Stu
d
io
ap
p
licatio
n
s
ar
e
u
p
lo
ad
ed
to
Go
o
g
le
Play
[
2
4
]
.
Ma
r
k
er
-
b
ased
A
u
g
m
en
te
d
R
ea
lity
(
MBA
R
)
is
a
tech
n
o
lo
g
y
th
at
co
m
b
in
es
co
m
p
u
ter
v
is
io
n
a
n
d
c
o
m
p
u
ter
g
r
ap
h
ics
tech
n
iq
u
es
to
cr
ea
te
an
im
m
er
s
iv
e
an
d
in
ter
ac
tiv
e
au
g
m
en
ted
r
ea
lity
ex
p
er
ien
ce
.
On
e
o
f
t
h
e
ea
r
lies
t
MBAR
s
y
s
tem
s
,
AR
T
o
o
lKit
,
was
d
ev
elo
p
ed
in
1
9
9
9
at
th
e
Un
i
v
er
s
ity
o
f
W
ash
in
g
to
n
an
d
u
t
ilized
a
2
D
m
ar
k
er
r
ec
o
g
n
itio
n
tec
h
n
iq
u
e
b
ased
o
n
th
e
id
en
tific
atio
n
o
f
f
id
u
cial
m
a
r
k
er
s
.
AR
T
o
o
lKit
was
ab
le
t
o
tr
ac
k
th
e
m
ar
k
e
r
s
in
r
ea
l
-
tim
e
an
d
b
ec
am
e
a
p
o
p
u
lar
p
latf
o
r
m
f
o
r
th
e
d
ev
el
o
p
m
en
t
o
f
au
g
m
en
ted
r
ea
lity
ap
p
licatio
n
s
[
2
5
]
.
Sin
ce
th
en
,
MBAR
tech
n
o
lo
g
y
h
as
ev
o
lv
ed
to
i
n
clu
d
e
a
v
a
r
i
ety
o
f
m
ar
k
er
r
ec
o
g
n
itio
n
a
n
d
tr
ac
k
in
g
tec
h
n
iq
u
es,
in
cl
u
d
in
g
n
atu
r
al
f
ea
t
u
r
e
tr
ac
k
in
g
,
o
p
tical
f
lo
w,
an
d
im
ag
e
r
ec
o
g
n
itio
n
.
I
m
ag
e
r
ec
o
g
n
itio
n
,
also
k
n
o
wn
as
tem
p
late
m
atch
in
g
,
in
v
o
lv
es
m
atch
in
g
a
tem
p
late
im
ag
e
o
f
th
e
m
ar
k
er
to
th
e
c
u
r
r
en
t
ca
m
er
a
f
r
am
e
to
d
eter
m
in
e
th
e
lo
ca
tio
n
an
d
o
r
ien
tatio
n
o
f
th
e
m
a
r
k
er
s
[
2
6
]
.
I
n
ed
u
ca
tio
n
,
MBAR
h
as b
e
en
u
s
ed
to
cr
ea
te
in
ter
ac
tiv
e
lear
n
in
g
ex
p
er
ien
ce
s
,
wh
er
e
v
ir
tu
al
o
b
jects
an
d
s
im
u
latio
n
s
ar
e
o
v
er
laid
o
n
to
r
ea
l
-
wo
r
ld
s
ce
n
es
to
p
r
o
v
id
e
a
m
o
r
e
en
g
ag
in
g
an
d
in
ter
ac
tiv
e
lear
n
in
g
ex
p
er
ien
ce
[
2
7
]
.
MBAR
o
f
f
er
s
m
an
y
b
en
ef
its
,
s
u
ch
as
its
ab
ilit
y
to
p
r
o
v
id
e
a
m
o
r
e
im
m
er
s
iv
e
an
d
in
ter
ac
tiv
e
ex
p
er
ien
ce
an
d
its
p
o
ten
tial
to
en
h
an
ce
lear
n
in
g
an
d
p
r
o
b
lem
-
s
o
lv
in
g
s
k
ills
,
th
er
e
ar
e
also
ch
allen
g
es a
s
s
o
ciate
d
with
tech
n
o
lo
g
y
.
2.
RE
S
E
ARCH
M
E
T
H
O
D
2
.
1
.
M
a
r
k
er
-
ba
s
ed
v
s
m
a
r
k
e
rless
Ma
r
k
er
-
b
ased
a
u
g
m
e
n
ted
r
ea
l
ity
(
AR
)
is
o
f
ten
p
r
e
f
er
r
ed
o
v
er
m
ar
k
er
less
AR
in
ce
r
tain
s
itu
atio
n
s
d
u
e
to
s
ev
er
al
r
ea
s
o
n
s
.
First,
m
ar
k
er
-
b
ased
AR
is
s
im
p
ler
to
im
p
lem
en
t
s
in
ce
it
d
o
es
n
o
t r
eq
u
ir
e
s
o
p
h
is
ticated
co
m
p
u
ter
v
is
io
n
alg
o
r
ith
m
s
.
T
h
is
m
ak
es
it
a
g
o
o
d
ch
o
ice
f
o
r
AR
ap
p
licatio
n
s
th
at
n
e
ed
to
b
e
d
e
v
elo
p
e
d
q
u
ick
ly
o
r
o
n
a
tig
h
t
b
u
d
g
et.
Seco
n
d
,
m
ar
k
er
-
b
ased
AR
ca
n
p
r
o
v
id
e
h
ig
h
ac
cu
r
ac
y
in
ter
m
s
o
f
p
lacin
g
v
ir
tu
al
co
n
ten
t,
as
th
e
m
ar
k
er
s
p
r
o
v
id
e
a
clea
r
r
ef
er
en
ce
p
o
in
t.
T
h
is
ca
n
b
e
p
ar
ticu
la
r
ly
u
s
ef
u
l
in
ap
p
licatio
n
s
wh
er
e
p
r
ec
is
e
p
o
s
itio
n
in
g
is
im
p
o
r
ta
n
t,
s
u
ch
as in
m
ed
ical,
in
d
u
s
tr
i
al,
o
r
m
ilit
ar
y
co
n
te
x
ts
.
I
n
ad
d
itio
n
,
m
ar
k
er
-
b
ased
AR
p
r
o
v
id
es
a
m
o
r
e
s
tr
aig
h
tf
o
r
war
d
u
s
er
ex
p
e
r
ien
ce
,
as
th
e
m
ar
k
er
s
ac
t
as
a
clea
r
r
ef
er
en
ce
p
o
in
t
f
o
r
th
e
v
ir
tu
al
co
n
ten
t.
T
h
is
ca
n
b
e
h
elp
f
u
l
in
s
itu
atio
n
s
wh
e
r
e
th
e
u
s
er
n
ee
d
s
to
q
u
ick
l
y
u
n
d
er
s
t
an
d
th
e
r
elatio
n
s
h
ip
b
etwe
en
th
e
p
h
y
s
ical
an
d
v
ir
t
u
al
elem
en
ts
.
Mo
r
eo
v
er
,
m
ar
k
er
-
b
ased
AR
ca
n
b
e
less
ex
p
e
n
s
iv
e
s
in
ce
it
d
o
es
n
o
t
r
eq
u
ir
e
co
m
p
lex
c
o
m
p
u
t
er
v
is
io
n
alg
o
r
ith
m
s
,
m
ak
i
n
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it
a
g
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o
d
ch
o
ice
f
o
r
b
u
d
g
et
-
s
en
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itiv
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p
r
o
jects.
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ally
,
m
ar
k
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-
b
ased
AR
s
y
s
tem
s
ar
e
o
f
ten
m
o
r
e
p
o
r
tab
l
e
s
in
ce
th
ey
d
o
n
o
t
r
eq
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ir
e
a
h
ig
h
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p
er
f
o
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a
n
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m
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u
tin
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er
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ased
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b
e
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g
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o
d
ch
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ice
f
o
r
AR
ap
p
licatio
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th
at
r
eq
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e
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s
im
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le,
ac
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r
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e,
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d
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u
d
g
et
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f
r
ien
d
l
y
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o
lu
tio
n
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r
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s
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aig
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o
r
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u
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er
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e
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ce
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t
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p
ar
ticu
la
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ly
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s
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l
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licatio
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th
at
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ig
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is
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ilit
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t
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r
tan
t c
o
n
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id
er
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s
.
2
.
2
.
F
l
o
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rt
Fig
u
r
e
1
s
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o
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tem
ap
p
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lo
wch
ar
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D.
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er
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ich
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a
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it.
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ir
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e.
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ices
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3
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m
o
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el
with
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ter
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es o
n
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s
e
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is
ap
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licatio
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.
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astl
y
,
th
e
e
x
it o
p
tio
n
is
to
q
u
it th
e
a
p
p
licatio
n
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
2
5
2
-
8
7
7
6
I
n
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f
&
C
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m
m
u
n
T
ec
h
n
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l
,
Vo
l.
1
5
,
No
.
2
,
J
u
n
e
20
2
6
:
6
8
3
-
6
9
8
686
Fig
u
r
e
1
.
Ap
p
licatio
n
f
lo
wc
h
a
r
t
2
.
3
.
Arc
hite
ct
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d
ia
g
ra
m
Fig
u
r
e
2
-
4
d
ep
ict
th
e
s
y
s
tem
ar
ch
itectu
r
al
d
ia
g
r
am
,
wh
ich
i
n
clu
d
es
in
p
u
t,
p
r
o
ce
s
s
,
an
d
o
u
tp
u
t.
T
h
e
in
p
u
t
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a
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r
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ce
s
s
o
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p
r
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d
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g
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e
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E
D
ap
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n
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ic
h
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ce
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ch
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3
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m
o
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el
d
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n
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s
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g
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len
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er
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I
n
ter
f
ac
e
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d
AR
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licatio
n
d
ev
elo
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m
en
t
u
s
in
g
Un
ity
3
D
an
d
I
m
ag
e
T
r
ac
k
er
u
s
in
g
Vu
f
o
r
ia.
Fu
r
th
e
r
m
o
r
e,
it
s
h
o
w
s
th
e
p
r
o
ce
s
s
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ich
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o
w
th
e
u
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er
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n
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ce
s
s
AR
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D
b
y
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e
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ap
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licatio
n
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n
d
s
ca
n
n
in
g
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h
e
tar
g
eted
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ag
e.
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astl
y
,
f
o
r
th
e
o
u
tp
u
t,
wh
e
n
th
e
co
r
r
esp
o
n
d
in
g
m
a
r
k
er
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id
en
tifie
d
,
th
e
3
D
m
o
d
el
o
f
th
e
m
ar
k
er
is
s
u
p
er
im
p
o
s
ed
o
n
t
h
e
s
m
ar
tp
h
o
n
e'
s
s
cr
ee
n
.
Fig
u
r
e
2
illu
s
tr
ates
th
e
p
r
o
ce
s
s
o
f
d
e
v
elo
p
in
g
an
au
g
m
en
ted
r
ea
lity
(
AR
)
ap
p
licatio
n
u
s
in
g
Un
ity
3
D
an
d
v
ar
io
u
s
s
u
p
p
o
r
tin
g
to
o
ls
.
Fig
u
r
e
2
(
a)
s
h
o
ws
th
e
d
e
v
elo
p
m
en
t
o
f
th
e
a
p
p
licatio
n
'
s
u
s
er
in
ter
f
ac
e
in
Un
ity
3
D,
wh
er
e
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ter
ac
tiv
e
elem
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ts
s
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ch
as
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u
tto
n
s
,
m
en
u
s
,
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d
n
av
ig
atio
n
to
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ls
ar
e
d
esig
n
ed
to
en
h
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ce
u
s
er
in
ter
ac
tio
n
with
in
th
e
AR
en
v
ir
o
n
m
en
t.
Fig
u
r
e
2
(
b
)
p
r
esen
ts
th
e
cr
ea
tio
n
o
f
en
g
in
ee
r
in
g
eq
u
i
p
m
en
t
3
D
m
o
d
els
u
s
in
g
B
len
d
er
An
im
at
io
n
T
o
o
ls
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T
h
is
s
tep
in
v
o
lv
es
d
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ac
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ate
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d
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ep
r
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o
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en
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ee
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g
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r
m
ac
h
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n
er
y
to
b
e
u
s
ed
in
th
e
ap
p
licatio
n
.
I
n
Fig
u
r
e
2
(
c)
,
th
e
im
ag
e
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g
ets
ar
e
u
p
l
o
ad
e
d
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to
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e
Vu
f
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r
ia
E
n
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in
e.
T
h
es
e
im
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ets
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as
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l
m
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at,
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iz
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,
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ig
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r
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3
D
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te
n
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Fin
ally
,
Fig
u
r
e
2
(
d
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illu
s
tr
ates
th
e
o
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er
all
d
ev
elo
p
m
en
t
o
f
th
e
AR
ap
p
licatio
n
in
Un
ity
3
D,
wh
er
e
th
e
u
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ter
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3
D
m
o
d
els,
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d
im
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e
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ts
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e
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teg
r
ated
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r
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d
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ce
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f
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lly
f
u
n
ctio
n
al
au
g
m
en
ted
r
ea
lity
e
x
p
er
ien
ce
.
(
a)
(
b
)
(
c)
(
d
)
Fig
u
r
e
2
.
I
n
p
u
t
b
y
u
s
in
g
Un
ity
3
D;
(
a)
ap
p
licatio
n
’
s
u
s
er
in
te
r
f
ac
e
d
ev
el
o
p
m
en
t,
(
b
)
d
esig
n
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f
e
n
g
in
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r
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n
g
eq
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ip
m
en
t 3
D
m
o
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els u
s
in
g
B
len
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er
an
im
atio
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to
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ls
,
(
c
)
u
p
l
o
ad
im
ag
e
tar
g
ets in
Vu
f
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r
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e
n
g
in
e,
an
d
(
d
)
d
e
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elo
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e
n
t o
f
t
h
e
au
g
m
e
n
ted
r
ea
lity
ap
p
licatio
n
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t J I
n
f
&
C
o
m
m
u
n
T
ec
h
n
o
l
I
SS
N:
2252
-
8
7
7
6
A
n
d
r
o
id
mo
b
ile
3
D
a
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Fig
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r
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illu
s
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ates
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ter
ac
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s
with
th
e
a
u
g
m
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ted
r
ea
lity
(
AR
)
ap
p
lic
atio
n
o
n
a
s
m
ar
tp
h
o
n
e.
Fig
u
r
e
3
(
a)
s
h
o
w
s
th
e
s
ca
n
n
in
g
o
f
an
im
a
g
e
tar
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et,
o
r
m
ar
k
er
,
wh
ic
h
r
e
p
r
esen
ts
th
e
en
g
i
n
ee
r
in
g
eq
u
ip
m
en
t.
T
h
e
s
m
ar
tp
h
o
n
e
’
s
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m
er
a
d
etec
ts
th
is
m
ar
k
er
t
o
in
itiate
th
e
AR
ex
p
er
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ce
.
On
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th
e
m
ar
k
e
r
is
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ec
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ized
,
th
e
ap
p
licatio
n
o
v
er
lay
s
th
e
co
r
r
esp
o
n
d
in
g
3
D
m
o
d
el
o
n
to
th
e
r
ea
l
-
wo
r
ld
v
iew.
Fig
u
r
e
3
(
b
)
d
ep
icts
th
e
AR
ap
p
licatio
n
b
ein
g
in
s
talled
o
n
th
e
s
m
ar
tp
h
o
n
e.
T
h
is
s
tep
en
s
u
r
es
th
at
u
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er
s
h
av
e
ac
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to
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e
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ess
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to
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e
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ex
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ce
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en
a
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em
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is
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alize
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ter
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r
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ee
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g
m
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els th
r
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h
th
eir
m
o
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ile
d
e
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ices.
(
a)
(
b
)
Fig
u
r
e
3
.
Pro
ce
s
s
(
a)
s
ca
n
th
e
im
ag
e
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et
(
m
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r
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er
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f
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h
e
e
n
g
in
ee
r
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g
eq
u
i
p
m
en
t u
s
in
g
s
m
ar
tp
h
o
n
e’
s
ca
m
e
r
a
an
d
(
b
)
AR
ap
p
licatio
n
b
ein
g
in
s
talled
o
n
s
m
ar
tp
h
o
n
es
Fig
u
r
e
4
.
Ou
t
p
u
t f
o
r
s
m
ar
tp
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o
n
e
’
s
s
cr
ee
n
an
d
3
D
m
o
d
el
with
its
in
f
o
r
m
atio
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2
.
4
.
P
r
o
t
o
t
y
pe
d
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n
Fig
u
r
e
5
illu
s
tr
ates
th
e
p
r
o
t
o
ty
p
e
m
o
d
el
o
f
th
e
AR
E
D
ap
p
s
wh
ich
c
o
n
s
is
ts
o
f
th
r
ee
cr
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cial
co
m
p
o
n
en
ts
to
en
s
u
r
e
th
e
ap
p
licatio
n
r
u
n
s
p
r
o
p
er
ly
f
o
r
s
m
ar
tp
h
o
n
e
d
is
p
lay
(
A)
,
ca
m
e
r
a
(
B
)
an
d
im
ag
e
tar
g
e
t
(
C
)
.
T
h
e
im
ag
e
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g
et
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s
et
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1
0
s
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ec
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ied
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g
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ee
r
in
g
e
q
u
ip
m
en
t.
T
h
e
tar
g
et
im
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e
(
C
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will
b
e
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ca
n
n
ed
an
d
tr
ac
k
e
d
b
y
t
h
e
ca
m
er
a
(
B
)
th
u
s
ac
tiv
atin
g
th
e
AR
s
o
f
twar
e
to
d
is
p
lay
th
e
3
D
m
o
d
el
o
n
th
e
s
m
ar
tp
h
o
n
e'
s
d
is
p
lay
(
A)
.
I
n
ad
d
itio
n
to
d
is
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in
g
th
e
3
D
m
o
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el
o
n
t
h
e
s
m
ar
tp
h
o
n
e'
s
d
is
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(
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,
u
s
er
s
co
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ld
in
ter
ac
t
with
it
an
d
r
ea
d
th
e
ac
co
m
p
a
n
y
in
g
in
f
o
r
m
atio
n
.
C
o
n
s
eq
u
en
tly
,
1
0
d
is
tin
ct
im
ag
e
tar
g
ets
will
y
ield
a
3
D
m
o
d
el
o
f
ea
ch
o
f
th
e
1
0
d
if
f
er
e
n
t e
n
g
i
n
e
er
in
g
eq
u
ip
m
en
t.
Fig
u
r
e
5
.
Pro
t
o
ty
p
e
d
esig
n
2
.
5
.
H
a
rdwa
re
C
h
o
o
s
in
g
th
e
h
ar
d
war
e
is
th
e
in
itial
s
tep
in
d
eter
m
in
i
n
g
th
e
p
latf
o
r
m
o
n
wh
ich
AR
E
D
will
b
e
d
ep
lo
y
e
d
.
C
o
n
s
id
er
atio
n
s
f
o
r
AR
ap
p
licatio
n
h
ar
d
war
e
in
cl
u
d
e
th
e
d
is
p
lay
r
eso
lu
tio
n
,
ca
m
er
a
m
eg
a
p
ix
els,
p
r
o
ce
s
s
o
r
,
a
n
d
R
AM
.
T
h
e
AR
d
ev
ice
p
latf
o
r
m
ch
o
s
en
f
o
r
AR
E
D
t
o
r
u
n
is
an
a
n
d
r
o
id
s
m
ar
tp
h
o
n
e.
T
h
e
s
p
ec
if
icatio
n
s
o
f
s
m
ar
tp
h
o
n
es u
s
ed
ar
e
lis
ted
in
T
a
b
le
1
.
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H
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R
A
M
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B
2
.
6
.
So
f
t
wa
re
T
h
e
s
o
f
twar
e
u
s
ed
to
b
u
ild
A
R
E
D
p
lay
s
a
c
r
u
cial
p
ar
t
in
d
e
s
ig
n
in
g
AR
ap
p
licatio
n
s
.
A
co
llectio
n
o
f
s
o
f
twar
e
lis
ted
in
tab
le
2
b
elo
w
m
u
s
t w
o
r
k
to
g
eth
er
t
o
cr
ea
t
e
th
e
AR
en
v
ir
o
n
m
en
t sy
s
tem
.
Un
ity
3
D
E
n
g
in
e
is
u
s
ed
as
th
e
p
r
im
ar
y
to
o
l
f
o
r
cr
ea
t
in
g
th
e
AR
ap
p
licatio
n
.
T
h
is
en
g
in
e
is
u
s
ed
in
c
o
n
ju
n
ctio
n
with
B
len
d
er
An
im
atio
n
T
o
o
ls
,
wh
ic
h
is
u
s
ed
to
g
e
n
er
ate
h
ig
h
-
q
u
ality
3
D
m
o
d
els
th
at
ar
e
ess
en
tial
f
o
r
an
im
m
er
s
iv
e
AR
ex
p
er
ien
ce
.
Ad
d
itio
n
ally
,
An
d
r
o
id
Stu
d
io
,
a
wid
ely
u
s
ed
I
DE
,
is
u
s
ed
to
ex
ec
u
te
th
e
p
r
o
g
r
am
o
n
An
d
r
o
id
s
m
ar
tp
h
o
n
es.
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h
is
s
o
f
twar
e
e
n
ab
les th
e
AR
E
D
s
y
s
tem
to
b
e
co
m
p
atib
le
with
a
wid
e
r
a
n
g
e
o
f
an
d
r
o
id
d
ev
ices.
T
ab
le
2
.
So
f
twar
e
v
er
s
io
n
S
o
f
t
w
a
r
e
V
e
r
si
o
n
To
o
l
s
W
i
n
d
o
w
s OS
W
i
n
d
o
w
s 1
0
P
r
o
6
4
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b
i
t
U
n
i
t
y
3
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e
n
g
i
n
e
Ed
i
t
o
r
2
0
2
2
.
1
.
2
3
f
1
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l
e
n
d
e
r
a
n
i
ma
t
i
o
n
B
l
e
n
d
e
r
3
.
4
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u
f
o
r
i
a
e
n
g
i
n
e
V
u
f
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r
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a
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i
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2
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n
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r
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p
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n
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n
d
r
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P
i
e
3.
RE
SU
L
T
S AN
D
D
I
SCU
SS
I
O
N
3
.
1
.
M
o
bil
e
a
pp
lica
t
io
n desi
g
n
E
q
u
atio
n
s
T
h
is
p
r
o
g
r
a
m
allo
wed
u
s
er
s
to
v
iew
a
3
D
en
g
in
ee
r
in
g
d
ev
ice
m
o
d
el.
Usi
n
g
AR
,
u
s
er
s
ca
n
s
ca
n
an
im
ag
e
ta
r
g
et
with
t
h
eir
s
m
ar
tp
h
o
n
e'
s
ca
m
er
a
to
g
en
er
ate
a
n
AR
en
v
ir
o
n
m
e
n
t
with
3
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m
o
d
els
s
u
p
er
im
p
o
s
ed
o
n
th
e
s
m
ar
tp
h
o
n
e'
s
s
cr
ee
n
.
T
h
e
3
D
en
g
in
ee
r
in
g
d
ev
ice
m
o
d
el
r
ea
cts
in
r
e
al
tim
e
an
d
f
o
llo
ws
th
e
AR
m
ar
k
er
,
allo
win
g
u
s
er
s
to
r
o
tate
an
d
s
ca
le
it
v
ia
to
u
ch
in
p
u
t
to
v
iew
it
f
r
o
m
v
ar
io
u
s
an
g
les.
Fu
r
th
er
m
o
r
e
,
th
e
i
n
f
o
r
m
atio
n
ab
o
u
t
ea
c
h
co
r
r
esp
o
n
d
in
g
e
n
g
in
ee
r
in
g
d
ev
ice
will
b
e
d
is
p
lay
ed
to
t
h
e
u
s
er
f
o
r
th
em
t
o
lear
n
ab
o
u
t
th
at
s
p
ec
if
ic
d
ev
ice.
T
h
e
lay
o
u
t
o
f
th
e
AR
E
D
m
o
b
ile
ap
p
'
s
u
s
er
in
ter
f
ac
e
is
d
ep
icted
in
Fig
u
r
e
6
.
Fig
u
r
e
6
(
a)
a
s
cr
ee
n
s
h
o
t
o
f
th
e
a
p
p
licatio
n
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s
m
ain
m
en
u
,
Fig
u
r
e
6
(
b
)
a
u
s
er
g
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id
e
o
n
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w
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u
s
e
th
e
ap
p
licatio
n
,
an
d
Fig
u
r
e
6
(
c
)
m
ar
k
er
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b
ased
im
ag
e
tr
ac
k
er
i
n
s
tr
u
ctio
n
s
,
ar
e
all
p
r
o
v
i
d
ed
i
n
Fig
u
r
e
6
.
T
h
e
u
s
er
in
ter
f
ac
e
is
th
e
in
ter
ac
tio
n
b
et
wee
n
th
e
d
ev
ice
a
n
d
th
e
u
s
er
.
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u
r
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.
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I
n
ter
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ac
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(
a
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m
ain
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u
i
n
ter
f
ac
e
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b
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m
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r
k
er
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er
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d
(
c)
I
n
ter
ac
tio
n
in
t
er
f
ac
e
Fig
u
r
e
7
d
ep
icts
th
e
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u
tp
u
t o
f
th
e
'
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m
ag
e
T
r
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m
ar
k
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in
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ich
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er
s
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t th
e
ca
m
er
a
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th
e
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ar
k
e
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d
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e
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y
s
tem
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lay
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e
co
r
r
esp
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n
d
in
g
3
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m
o
d
el
o
f
t
h
e
en
g
i
n
ee
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g
d
ev
ice
a
n
d
its
in
f
o
r
m
atio
n
.
A
to
tal
o
f
ten
im
ag
e
tar
g
ets
wer
e
d
ev
elo
p
ed
.
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ig
u
r
e
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(
a
)
is
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wer
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p
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ly
,
F
ig
u
r
e
7
(
b
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is
m
u
lti
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u
r
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m
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t
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p
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eter
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r
ar
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m
o
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eter
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(
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clam
p
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eter
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h
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s
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th
e
AR
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D
ap
p
licatio
n
.
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h
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r
esp
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n
s
es
ar
e
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llect
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o
u
g
h
a
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ies
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o
n
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ia
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s
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h
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ar
ticip
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t
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p
r
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ted
with
f
o
u
r
ca
teg
o
r
ies
o
f
q
u
esti
o
n
s
to
ac
q
u
ir
e
o
p
in
io
n
s
o
n
v
ar
io
u
s
to
p
ics.
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h
e
c
ateg
o
r
ies
ar
e
th
e
u
s
er
'
s
b
ac
k
g
r
o
u
n
d
,
u
s
er
'
s
ex
p
er
ien
ce
with
AR
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d
u
s
er
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s
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p
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ce
with
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D
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p
licatio
n
.
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ik
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t
s
ca
le
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aly
s
is
i
s
u
s
ed
to
ev
alu
ate
r
esp
o
n
s
es
to
L
ik
er
t
-
ty
p
e
q
u
esti
o
n
s
,
wh
ich
ar
e
co
m
m
o
n
ly
u
s
ed
in
s
u
r
v
ey
s
an
d
q
u
esti
o
n
n
air
es
[
2
8
]
.
I
t
in
v
o
lv
es
th
e
d
is
tr
ib
u
tio
n
o
f
r
esp
o
n
s
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o
n
a
s
ca
le
th
at
r
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g
es
f
r
o
m
s
tr
o
n
g
ly
ag
r
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to
s
tr
o
n
g
ly
d
is
ag
r
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to
u
n
d
er
s
tan
d
t
h
e
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es,
p
er
ce
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tio
n
s
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an
d
o
p
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io
n
s
o
f
a
g
r
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u
p
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f
p
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le
a
n
d
id
en
tify
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atter
n
s
an
d
tr
en
d
s
in
th
e
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ata.
T
h
is
m
eth
o
d
is
u
s
ed
to
g
et
p
ar
ticip
an
t
ex
p
o
s
u
r
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to
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g
en
er
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l
an
d
t
h
eir
e
x
p
er
ien
ce
u
s
in
g
AR
E
D
ap
p
licatio
n
.
Fig
u
r
e
8
illu
s
tr
ates
th
e
p
ar
ticip
an
t’
s
ag
e
p
er
ce
n
tag
e
s
u
r
v
e
y
s
f
o
r
th
e
p
ar
ticip
an
t
’
s
d
em
o
g
r
ap
h
ic.
Mo
s
t
o
f
th
e
p
ar
ticip
an
ts
ar
e
b
etwe
en
1
9
-
3
0
y
ea
r
s
o
ld
with
7
3
.
9
%.
W
h
ile
th
e
r
esp
o
n
d
en
ts
with
ag
es
ab
o
v
e
3
0
ar
e
1
5
.
2
%
an
d
o
n
l
y
1
0
.
9
% o
f
t
h
o
s
e
u
n
d
er
1
8
y
ea
r
s
o
ld
.
Fig
u
r
e
9
s
h
o
ws
th
e
o
cc
u
p
atio
n
o
f
t
h
e
p
ar
ticip
an
ts
.
Mo
s
t
o
f
th
em
ar
e
s
tu
d
e
n
ts
with
7
1
.
7
%,
wh
ile
1
9
.
6
%
ar
e
wo
r
k
in
g
,
an
d
8
.
7
%
o
f
r
esp
o
n
d
e
n
ts
ar
e
r
etir
e
d
.
Su
r
v
ey
q
u
esti
o
n
s
wer
e
d
esig
n
ed
to
ascer
tain
th
e
Par
ticip
an
t’
s
g
en
er
al
k
n
o
wled
g
e
o
f
AR
.
Fig
u
r
e
1
0
illu
s
tr
at
es
Par
ticip
an
t’
s
r
ep
li
es
if
th
ey
ev
er
h
ea
r
d
o
f
AR
b
ef
o
r
e.
T
h
e
r
esu
lts
in
d
icate
th
at
9
3
.
5
%
o
f
p
a
r
ticip
an
ts
h
av
e
h
ea
r
d
o
f
AR
.
On
ly
6
.
5
%
h
av
e
n
o
t
h
ea
r
d
o
f
AR
.
Fig
u
r
e
1
1
d
is
p
lay
s
r
esp
o
n
d
e
n
ts
'
ex
p
er
ien
ce
r
ate
with
AR
o
n
a
L
ik
er
t
s
ca
le
o
f
1
to
5
,
1
b
ei
n
g
n
o
t
f
am
iliar
an
d
5
b
ein
g
v
e
r
y
f
am
iliar
.
6
5
.
2
%
o
f
p
ar
ticip
an
ts
p
ic
k
ed
le
v
el
5
as
th
ey
ar
e
v
er
y
ex
p
er
ien
c
ed
with
AR
.
Nex
t,
1
5
.
2
% p
ick
e
d
lev
el
4
a
n
d
8
.
7
% o
f
r
esp
o
n
d
en
ts
ev
alu
ated
th
em
s
elv
es o
n
lev
el
3
wh
ich
th
e
y
k
n
o
w
a
litt
le
ab
o
u
t
AR
.
4
.
3
%
r
an
k
ed
th
em
s
elv
es
o
n
lev
el
2
,
wh
er
ea
s
6
.
5
%
o
f
r
esp
o
n
d
en
ts
p
ick
ed
lev
el
1
as
t
h
ey
ar
e
n
o
t
f
a
m
iliar
with
AR
at
all.
Mo
s
t o
f
th
e
r
esp
o
n
d
e
n
ts
h
av
e
u
s
ed
o
r
e
x
p
er
ie
n
ce
d
s
o
m
e
ty
p
e
o
f
AR
b
ef
o
r
e.
Fig
u
r
e
8
.
Ag
e
o
f
p
ar
ticip
an
ts
Fig
u
r
e
9
.
Occ
u
p
atio
n
o
f
p
a
r
ticip
an
ts
Fig
u
r
e
1
0
.
Kn
o
wled
g
e
o
n
a
u
g
m
en
ted
r
ea
lity
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
t J I
n
f
&
C
o
m
m
u
n
T
ec
h
n
o
l
I
SS
N:
2252
-
8
7
7
6
A
n
d
r
o
id
mo
b
ile
3
D
a
u
g
men
te
d
r
ea
lity e
n
g
in
ee
r
in
g
d
ev
ices d
esig
n
u
s
in
g
…
(
M
o
h
a
ma
d
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z
im
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b
r
a
h
im
)
691
Fig
u
r
e
1
1
.
E
x
p
e
r
ien
ce
o
n
au
g
m
en
ted
r
ea
lity
Fig
u
r
e
1
2
illu
s
tr
ates
th
e
an
aly
s
is
o
f
p
ar
ticip
an
ts
’
r
esp
o
n
s
es
to
wh
eth
er
AR
is
im
p
o
r
ta
n
t
in
th
e
f
u
tu
r
e
.
8
2
.
6
%
o
f
r
esp
o
n
d
e
n
ts
in
d
icate
d
th
at
AR
wo
u
ld
b
e
b
en
ef
icial
in
th
e
f
u
tu
r
e,
wh
ile
1
7
.
4
%
ex
p
r
ess
ed
u
n
ce
r
tain
ty
.
Par
ticip
an
ts
ag
r
ee
th
at
AR
tech
n
o
lo
g
y
is
im
p
o
r
tan
t
in
th
e
f
u
tu
r
e.
B
ased
o
n
th
e
s
u
r
v
ey
,
t
h
e
r
esu
lts
o
f
th
is
s
tu
d
y
h
a
v
e
p
r
o
v
id
e
d
v
alu
ab
le
in
s
ig
h
ts
in
to
t
h
e
p
er
ce
p
tio
n
s
an
d
ex
p
er
ien
ce
s
o
f
y
o
u
n
g
,
s
tu
d
en
t
p
ar
ticip
an
ts
r
eg
ar
d
in
g
AR
.
Mo
s
t
p
ar
ticip
an
ts
wer
e
f
o
u
n
d
to
b
e
y
o
u
n
g
,
s
tu
d
e
n
ts
h
ad
a
h
i
g
h
k
n
o
wled
g
e
o
f
AR
,
h
ad
p
r
io
r
e
x
p
er
ien
ce
with
AR
,
an
d
b
eliev
ed
th
at
AR
i
s
i
m
p
o
r
tan
t
f
o
r
th
e
f
u
tu
r
e
.
T
h
is
s
u
g
g
ests
th
at
th
i
s
d
em
o
g
r
a
p
h
ic
is
well
-
in
f
o
r
m
e
d
an
d
e
n
g
ag
e
d
with
AR
tech
n
o
lo
g
y
a
n
d
h
as
a
s
tr
o
n
g
u
n
d
er
s
tan
d
in
g
o
f
its
p
o
ten
tial
ap
p
licatio
n
s
an
d
b
en
ef
its
.
Fig
u
r
e
1
3
s
h
o
ws
th
e
r
es
p
o
n
s
e
o
n
th
e
ea
s
in
ess
to
h
an
d
l
e
AR
E
D,
o
n
a
s
ca
le
o
f
1
to
5
,
f
r
o
m
v
e
r
y
d
if
f
icu
lt
to
v
er
y
ea
s
y
b
ased
o
n
t
h
eir
o
p
in
io
n
r
eg
ar
d
i
n
g
th
eir
ex
p
er
ien
ce
with
AR
E
D
ap
p
licatio
n
.
T
h
e
h
ig
h
es
t
v
o
te
is
lev
el
5
(
v
er
y
ea
s
y
)
with
2
7
v
o
tes,
s
ec
o
n
d
is
lev
el
4
(
ea
s
y
)
with
1
4
v
o
tes.
L
astl
y
,
th
ir
d
is
lev
el
3
(
I
n
ter
m
e
d
iate)
with
5
v
o
tes.
I
t is p
o
s
s
ib
le
to
d
r
aw
th
at
AR
E
D
is
ea
s
y
to
u
s
e.
Fig
u
r
e
1
0
.
Kn
o
wled
g
e
o
n
a
u
g
m
en
ted
r
ea
lity
Fig
u
r
e
1
1
.
E
x
p
e
r
i
en
ce
o
n
au
g
m
en
ted
r
ea
lity
Fig
u
r
e
1
4
illu
s
tr
ates
th
e
p
ar
ticip
an
t'
s
s
atis
f
ac
tio
n
with
th
e
o
v
er
all
d
esig
n
o
f
AR
E
D.
An
s
wer
s
ar
e
g
r
ad
ed
o
n
a
s
ca
le
o
f
1
to
5
,
f
r
o
m
p
o
o
r
to
ex
ce
llen
t.
Mo
s
t
o
f
th
e
r
esp
o
n
d
en
ts
,
4
7
.
8
%
o
f
th
em
r
ate
le
v
el
5
(
ex
ce
llen
t)
is
s
atis
f
ied
with
th
e
d
esig
n
.
3
7
%
o
f
th
e
r
esp
o
n
d
en
t’
s
r
ate
lev
el
4
(
g
o
o
d
)
.
1
0
.
9
%
g
iv
e
a
r
atin
g
o
f
lev
el
3
(
i
n
ter
m
ed
iate)
a
n
d
o
n
ly
4
.
3
%
g
iv
e
a
lev
el
2
(
b
a
d
)
r
atin
g
.
Fig
u
r
e
1
5
illu
s
tr
ates
th
e
r
esp
o
n
s
es
to
th
e
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
2
5
2
-
8
7
7
6
I
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&
C
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T
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h
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,
Vo
l.
1
5
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No
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u
n
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20
2
6
:
6
8
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-
6
9
8
692
is
s
u
e
o
f
wh
eth
er
AR
E
D
h
elp
s
th
e
u
s
er
in
u
n
d
er
s
tan
d
i
n
g
t
h
e
en
g
in
ee
r
in
g
d
e
v
ices.
T
h
is
is
e
v
a
lu
ated
o
n
a
s
ca
le
o
f
1
to
5
,
with
1
b
ein
g
th
e
le
ast
h
elp
f
u
l
an
d
5
b
ein
g
th
e
m
o
s
t
h
elp
f
u
l.
On
ly
4
.
3
%
o
f
p
a
r
ticip
an
ts
s
tate
th
at
AR
E
D
is
in
ef
f
ec
tiv
e
wh
ich
p
ick
ed
lev
el
2
,
w
h
ile
6
.
5
%
s
tate
th
at
th
ey
ar
e
n
eu
tr
al
with
le
v
el
3
.
Me
an
wh
ile,
2
6
.
1
%
o
f
p
ar
ticip
an
ts
a
g
r
ee
t
h
at
AR
E
D
h
elp
s
th
em
u
n
d
e
r
s
tan
d
with
lev
el
4
a
n
d
th
e
m
ajo
r
ity
6
3
%
v
o
ted
f
o
r
lev
el
5
in
d
icatin
g
AR
E
D
ar
e
v
er
y
h
elp
f
u
l
in
u
n
d
er
s
tan
d
in
g
e
n
g
in
ee
r
in
g
d
ev
ices.
I
t
ca
n
b
e
s
aid
th
at
AR
E
D
ar
e
u
s
ef
u
l in
h
elp
i
n
g
u
s
er
s
u
n
d
er
s
t
an
d
en
g
in
ee
r
in
g
eq
u
ip
m
en
t w
h
en
u
s
in
g
it.
Fig
u
r
e
1
4
.
AR
E
D’
s
d
esig
n
r
ate
Fig
u
r
e
1
5
.
Help
to
u
n
d
er
s
tan
d
en
g
in
ee
r
in
g
d
ev
ice
s
u
r
v
ey
Fig
u
r
e
1
6
r
e
p
r
esen
ts
th
e
p
ar
ti
cip
an
t'
s
o
p
in
io
n
s
o
n
wh
eth
e
r
AR
will
b
e
u
s
ed
as
a
n
e
d
u
ca
ti
o
n
al
to
o
l
in
th
e
f
u
tu
r
e.
8
2
.
6
%
o
f
p
ar
ticip
a
n
ts
f
av
o
r
th
e
p
o
s
s
ib
ilit
y
,
wh
ile
th
e
r
em
ain
in
g
1
7
.
4
%
ar
e
d
o
u
b
tf
u
l.
T
h
e
m
ajo
r
ity
ag
r
ee
th
at
AR
ca
n
b
e
a
c
r
u
c
ial
to
o
l
f
o
r
f
u
tu
r
e
ed
u
ca
ti
o
n
.
Fig
u
r
e
1
7
s
h
o
ws
a
co
m
p
ar
i
s
o
n
o
f
p
ar
ticip
a
n
ts
'
p
r
ef
er
en
ce
s
b
etwe
en
AR
an
d
co
n
v
en
tio
n
al
b
o
o
k
s
.
Acc
o
r
d
in
g
to
th
e
p
ie
ch
ar
t,
8
4
.
8
% o
f
p
a
r
ticip
an
ts
p
r
ef
er
AR
o
v
er
b
o
o
k
s
,
w
h
ile
th
e
r
em
ain
i
n
g
1
5
.
2
%
p
r
e
f
er
b
o
o
k
s
o
v
er
AR
.
T
h
is
in
d
icate
s
th
at
AR
at
tr
ac
ts
m
o
r
e
in
ter
est
th
an
b
o
o
k
s
ac
co
r
d
in
g
t
o
p
ar
tic
ip
an
ts
.
Fig
u
r
e
1
6
.
Fu
tu
r
e
ed
u
ca
tio
n
al
to
o
ls
Fig
u
r
e
1
7
.
Pre
f
er
AR
E
D
th
an
b
o
o
k
s
Evaluation Warning : The document was created with Spire.PDF for Python.