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[
1
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2
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.
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[
5
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ii)
e
x
tr
ac
tin
g
th
e
s
ec
r
et
m
e
s
s
a
g
e
f
r
o
m
t
h
e
co
v
er
d
ata.
T
h
er
e
is
a
ls
o
a
d
ep
en
d
en
c
y
o
f
s
ec
r
et
k
e
y
i
n
o
r
d
er
to
p
er
f
o
r
m
th
e
e
m
b
ed
d
in
g
a
n
d
ex
tr
ac
tio
n
p
r
o
ce
s
s
.
T
h
e
p
r
o
p
o
s
ed
s
y
s
te
m
d
ea
ls
w
ith
a
r
e
v
er
s
ib
le
d
ata
h
id
in
g
p
r
o
ce
s
s
co
n
s
id
er
i
m
a
g
e
as
s
ec
r
et
m
e
s
s
a
g
e
an
d
v
i
d
eo
as
co
v
er
d
ata.
A
cc
o
r
d
in
g
l
y
,
t
h
e
h
o
s
t
v
id
eo
co
n
ten
t
w
il
l
b
e
s
u
b
j
ec
ted
to
th
e
d
ata
em
b
ed
d
in
g
s
y
s
te
m
w
i
t
h
in
w
h
ic
h
th
e
s
ec
r
et
m
es
s
ag
e
in
ter
m
s
o
f
i
m
a
g
e
w
i
ll
b
e
e
m
b
ed
d
ed
.
Up
o
n
p
er
f
o
r
m
i
n
g
s
u
cc
ess
f
u
l
e
m
b
e
d
d
in
g
p
r
o
ce
s
s
,
th
e
n
ex
t
s
tep
w
il
l
b
e
to
p
er
f
o
r
m
d
ata
e
x
t
r
ac
tio
n
w
h
er
e
th
e
s
y
s
te
m
s
h
o
u
ld
ex
tr
ac
t
t
h
e
s
ec
r
et
m
ess
ag
e
(
i
m
ag
e)
f
r
o
m
th
e
en
co
d
ed
co
v
er
m
ed
ia
(
v
i
d
eo
)
.
On
e
o
f
th
e
s
ig
n
i
f
ica
n
t
m
o
tiv
a
tin
g
f
ac
to
r
s
f
o
r
ad
o
p
ti
n
g
r
ev
er
s
ib
le
d
ata
e
m
b
ed
d
in
g
s
y
s
te
m
is
t
h
a
t it
is
in
d
ep
en
d
en
t o
f
an
y
f
o
r
m
o
f
e
m
b
ed
d
i
n
g
p
r
o
ce
s
s
w
it
h
d
is
to
r
t
io
n
.
A
t
p
r
ese
n
t,
t
h
er
e
ar
e
v
ar
io
u
s
co
n
v
e
n
tio
n
a
l
ap
p
r
o
ac
h
es
f
o
r
p
er
f
o
r
m
in
g
r
e
v
er
s
ib
le
d
ata
h
id
in
g
tech
n
iq
u
e
[
7
-
9
]
.
So
m
e
o
f
t
h
e
s
ig
n
i
f
ica
n
t
ap
p
r
o
ac
h
es
ar
e
s
u
b
s
titu
t
io
n
s
u
s
i
n
g
least
s
i
g
n
i
f
ic
an
t
b
its
,
d
if
f
er
e
n
ce
ex
p
an
s
io
n
,
a
n
d
h
is
to
g
r
a
m
m
o
d
if
icatio
n
.
All
t
h
ese
ap
p
r
o
ac
h
es
d
o
h
a
v
e
ad
v
a
n
ta
g
es
as
w
ell
a
s
r
ep
o
r
tin
g
li
m
ita
tio
n
s
also
.
T
h
er
ef
o
r
e,
th
e
clea
r
s
tate
m
e
n
t
o
f
th
e
p
r
o
b
lem
o
f
t
h
e
p
r
o
p
o
s
ed
s
tu
d
y
w
ill
b
e
to
d
esig
n
a
r
ev
er
s
ib
le
d
ata
h
id
in
g
f
r
a
m
e
w
o
r
k
o
v
er
co
m
in
g
t
h
e
li
m
itati
o
n
o
f
ex
i
s
ti
n
g
s
y
s
te
m
to
i
m
p
r
o
v
e
th
e
e
m
b
ed
d
in
g
p
er
f
o
r
m
a
n
ce
.
T
h
er
ef
o
r
e,
th
e
p
r
o
p
o
s
ed
s
y
s
te
m
in
tr
o
d
u
ce
s
a
co
s
t
-
ef
f
ec
ti
v
e
ap
p
r
o
ac
h
w
h
e
r
e
b
o
th
s
ec
u
r
it
y
as
w
ell
a
s
co
m
p
u
tatio
n
al
ef
f
icie
n
c
y
o
f
r
ev
er
s
ib
ilit
y
f
ac
to
r
o
f
th
e
d
ata
h
id
in
g
s
c
h
e
m
e
is
r
etain
ed
to
its
m
a
x
i
m
u
m
lev
el.
T
h
e
o
r
g
a
n
izatio
n
o
f
t
h
e
p
r
o
p
o
s
ed
p
ap
er
is
as
f
o
llo
w
s
:
Sectio
n
1
d
is
c
u
s
s
es
ab
o
u
t
t
h
e
ex
is
t
in
g
li
ter
atu
r
es
w
h
er
e
d
if
f
er
e
n
t
tec
h
n
iq
u
es
ar
e
d
is
cu
s
s
ed
f
o
r
d
etec
tio
n
s
c
h
e
m
es
u
s
ed
in
p
o
w
er
tr
an
s
m
is
s
i
o
n
li
n
es
f
o
llo
w
ed
b
y
d
is
cu
s
s
io
n
o
f
r
esear
c
h
p
r
o
b
le
m
s
a
n
d
p
r
o
p
o
s
ed
s
o
lu
tio
n
.
Se
ctio
n
2
d
is
cu
s
s
e
s
ab
o
u
t
alg
o
r
i
th
m
i
m
p
le
m
e
n
tatio
n
f
o
llo
w
ed
b
y
r
es
u
lt a
n
al
y
s
i
s
in
Sectio
n
3
an
d
co
n
cl
u
s
i
v
e
r
e
m
a
r
k
s
ar
e
p
r
o
v
id
ed
in
Sectio
n
4
.
A
t
p
r
esen
t
th
er
e
ar
e
v
ar
io
u
s
s
t
u
d
ies
f
o
cu
s
i
n
g
o
n
r
ev
er
s
ib
le
d
ata
h
id
i
n
g
p
r
ac
tices,
s
o
m
e
o
f
w
h
ic
h
ar
e
u
p
d
ated
in
o
u
r
p
r
io
r
w
o
r
k
[
1
0
]
.
T
h
e
r
ec
en
t
w
o
r
k
o
f
W
an
g
et
al.
[
1
1
]
h
av
e
u
s
ed
b
lo
ck
tr
u
n
c
a
tio
n
co
d
in
g
u
s
in
g
ab
s
o
lu
te
m
ea
n
alo
n
g
w
i
th
e
n
cr
y
p
tio
n
u
s
i
n
g
ch
ao
s
t
h
eo
r
y
w
it
h
a
clai
m
o
f
i
m
p
r
o
v
ed
s
e
cu
r
it
y
r
o
b
u
s
t
n
ess
.
A
d
o
p
tio
n
o
f
h
is
to
g
r
a
m
mo
d
ifi
ca
tio
n
is
an
o
th
er
f
r
eq
u
e
n
tl
y
u
s
ed
ap
p
r
o
ac
h
f
o
r
en
h
an
ci
n
g
t
h
e
co
n
tr
ast
le
v
el
o
f
an
i
m
ag
e
a
s
th
e
p
r
o
ce
s
s
o
f
r
ev
er
s
ib
le
d
ata
h
id
i
n
g
(
W
u
et
al.
[
1
2
]
)
.
T
h
e
w
o
r
k
o
f
P
en
g
et
al.
[
1
3
]
a
p
p
lies
th
e
en
cr
y
p
tio
n
p
r
o
ce
s
s
b
y
a
s
er
v
ice
p
r
o
v
id
er
w
h
o
p
er
f
o
r
m
s
cip
h
er
in
g
o
f
alr
ea
d
y
cip
h
er
ed
d
ata
b
y
u
s
er
u
s
i
n
g
th
e
co
n
ce
p
t
o
f
r
ev
er
s
ib
le
ma
p
p
in
g
mo
d
el
.
T
h
e
w
o
r
k
o
f
P
u
te
au
x
a
n
d
P
u
ec
h
[
1
4
]
h
as
u
s
ed
mo
s
t
s
ig
n
ifica
n
t
b
its
o
f
in
cr
ea
s
i
n
g
th
e
e
m
b
ed
d
in
g
ca
p
ac
it
y
u
s
in
g
p
r
ed
ictive
ap
p
r
o
ac
h
.
E
x
is
ti
n
g
s
y
s
te
m
h
a
s
al
s
o
w
it
n
es
s
ed
u
s
a
g
e
o
f
cip
h
er
in
g
p
r
o
ce
s
s
o
v
er
i
m
ag
e
b
it
s
tr
ea
m
s
u
s
i
n
g
r
ev
er
s
ib
le
d
ata
h
id
in
g
ap
p
r
o
ac
h
as
s
ee
n
in
w
o
r
k
o
f
Qian
et
al.
,
[
1
5
]
.
A
d
o
p
tio
n
o
f
b
in
a
r
y
tr
ee
w
i
th
d
is
cr
ete
lab
elin
g
ap
p
r
o
ac
h
w
a
s
also
p
r
o
v
en
to
i
m
p
r
o
v
e
th
e
p
er
f
o
r
m
an
c
e
o
f
r
ev
er
s
ib
le
d
a
ta
h
id
in
g
ap
p
r
o
ac
h
[
1
6
]
.
Ho
mo
mo
r
p
h
ic
en
cryp
tio
n
is
also
clai
m
ed
o
f
o
f
f
er
in
g
b
etter
en
cr
y
p
tio
n
p
e
r
f
o
r
m
an
ce
o
v
er
m
u
lti
m
ed
ia
d
ata
[
1
7
]
.
J
ian
g
et
al.
,
[
1
8
]
h
av
e
u
s
ed
en
cryp
tio
n
o
f
th
e
b
its
tr
ea
ms
u
s
i
n
g
least
s
i
g
n
if
ican
t
b
its
o
v
e
r
a
m
es
h
m
o
d
el
f
o
r
p
er
f
o
r
m
i
n
g
r
ev
er
s
ib
le
d
ata
h
id
i
n
g
.
Xian
g
an
d
L
u
o
[
1
9
]
h
av
e
also
P
a
illi
er
en
cryp
tio
n
s
ys
te
m
w
ith
a
b
etter
o
p
tio
n
f
o
r
r
esis
ti
n
g
p
ix
el
o
v
er
s
at
u
r
atio
n
th
at
h
as
b
e
n
ef
ic
ial
asp
ec
t
o
v
er
t
h
e
p
er
f
o
r
m
an
ce
o
f
d
ata
h
id
i
n
g
ap
p
r
o
ac
h
.
A
tr
a
n
s
fo
r
ma
tio
n
-
b
a
s
ed
a
p
p
r
o
a
ch
w
a
s
u
s
ed
b
y
Z
h
a
n
g
et
al.
,
[
2
0
]
w
h
er
e
th
e
in
f
o
r
m
a
t
io
n
o
f
th
e
s
o
u
r
ce
i
m
a
g
e
i
s
tr
a
n
s
f
o
r
m
ed
to
a
n
o
th
er
i
m
a
g
e
w
i
th
s
u
p
p
o
r
tab
ilit
y
o
f
lo
s
s
les
s
r
esto
r
atio
n
p
r
o
ce
s
s
.
E
x
is
ti
n
g
ap
p
r
o
ac
h
also
u
s
ed
mu
ltip
lexin
g
a
p
p
r
o
a
c
h
ass
o
ciate
d
w
i
th
th
e
co
d
e
d
iv
is
io
n
b
y
Ma
a
n
d
S
h
i
[
2
1
]
alo
n
g
w
it
h
W
al
s
h
Had
a
m
ar
d
.
Qian
an
d
Z
h
a
n
g
[
2
2
,
2
3
]
h
a
v
e
u
s
ed
lo
w
d
en
s
ity
p
a
r
ity
ch
ec
k
o
v
er
th
e
s
er
ies
o
f
th
e
s
elec
ted
b
its
u
s
i
n
g
S
lep
i
a
n
w
o
lf
co
d
e
.
T
h
e
au
th
o
r
s
h
a
v
e
also
p
er
f
o
r
m
ed
en
cr
y
p
tio
n
o
f
th
e
b
it
s
tr
ea
m
s
o
v
er
th
e
co
n
v
e
n
tio
n
al
J
P
E
G
f
o
r
m
at.
T
h
e
ca
p
ac
ity
o
f
t
h
e
co
n
v
en
t
io
n
al
r
ev
er
s
ib
le
d
ata
h
id
i
n
g
w
as
s
u
b
j
ec
ted
to
i
m
p
r
o
v
e
m
e
n
t
u
s
i
n
g
s
p
a
r
s
e
r
ep
r
esen
ta
tio
n
as see
n
in
th
e
w
o
r
k
o
f
C
ao
et
al.
[
2
4
]
.
Qiu
et
al.
[
2
5
]
h
av
e
p
r
esen
ted
an
ad
a
p
tiv
e
s
c
h
e
m
e
w
h
er
e
in
teg
er
tr
a
n
s
fo
r
ma
tio
n
s
c
h
e
m
e
h
as
b
ee
n
u
s
ed
f
o
r
i
m
p
r
o
v
i
n
g
t
h
e
e
m
b
ed
d
i
n
g
ef
f
icie
n
c
y
in
r
ev
er
s
ib
le
d
ata
h
id
in
g
.
C
o
n
s
id
er
atio
n
o
f
m
u
l
tip
le
n
u
m
b
er
s
o
f
p
r
ed
icto
r
s
i
s
also
p
r
o
v
en
to
im
p
r
o
v
e
th
e
p
er
f
o
r
m
a
n
ce
o
f
r
ev
er
s
ib
le
d
ata
h
id
i
n
g
as
s
ee
n
in
w
o
r
k
o
f
J
af
ar
et
al.
[
2
6
]
.
Op
tima
l m
o
d
ifica
tio
n
o
f th
e
h
is
to
g
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a
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is
co
n
s
id
er
ed
in
t
h
e
w
o
r
k
o
f
H
u
et
al.
[
2
7
]
w
h
er
e
a
p
ixel
p
r
ed
ictio
n
-
b
a
s
ed
ap
p
r
o
ac
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is
u
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w
i
th
ap
p
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i
m
atio
n
o
f
th
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e
m
b
ed
d
in
g
p
er
f
o
r
m
a
n
ce
.
L
i
et
al
.
[
2
8
]
h
av
e
u
s
ed
a
h
i
s
t
o
g
r
a
m
-
s
eq
u
e
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ce
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ased
tec
h
n
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q
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e
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to
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ifica
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An
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tatio
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ased
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p
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y
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al.
[
2
8
]
w
h
er
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m
u
ltip
le
n
u
m
b
er
s
o
f
h
i
s
to
g
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ar
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s
elec
ted
.
T
h
e
w
o
r
k
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f
Z
h
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u
et
al.
[
29
]
h
as
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u
p
ervis
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lea
r
n
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mec
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Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
0
8
8
-
8708
I
n
t J
E
lec
&
C
o
m
p
E
n
g
,
Vo
l.
10
,
No
.
5
,
Octo
b
e
r
2
0
2
0
:
5
4
8
7
-
5496
5490
2.
SYST
E
M
DE
SI
G
N
T
h
e
p
r
o
p
o
s
ed
s
y
s
te
m
i
n
tr
o
d
u
c
es
a
u
n
iq
u
e
p
r
o
ce
s
s
o
f
r
ev
er
s
i
b
le
d
ata
h
id
in
g
s
c
h
e
m
e
b
y
e
m
p
h
asizi
n
g
th
e
s
ec
u
r
e
d
ata
tr
an
s
m
i
s
s
io
n
o
v
er
w
ir
eles
s
n
et
w
o
r
k
w
i
th
r
eten
tio
n
o
f
m
a
x
i
m
u
m
i
n
f
o
r
m
atio
n
.
T
h
e
p
r
i
m
e
r
esear
ch
ch
alle
n
g
e
is
to
en
s
u
r
e
th
at
w
h
ile
p
er
f
o
r
m
in
g
e
m
b
ed
d
in
g
o
f
th
e
s
ec
r
et
d
ata,
th
er
e
s
h
o
u
ld
n
o
t
b
e
s
ig
n
i
f
ica
n
t
lo
s
s
o
f
th
e
v
id
eo
co
v
er
.
A
lt
h
o
u
g
h
,
th
er
e
ar
e
ce
r
tain
ap
p
licatio
n
w
h
er
e
co
v
er
m
ed
iu
m
i
s
ab
s
o
lu
tel
y
n
o
t
s
u
b
j
ec
ted
to
an
y
f
o
r
m
o
f
d
eg
r
ad
atio
n
e.
g
.
m
ili
tar
y
,
m
ed
ical,
an
d
f
o
r
en
s
ic,
etc.
T
h
e
p
r
o
p
o
s
ed
s
y
s
te
m
in
tr
o
d
u
ce
s
a
n
o
v
el
m
ec
h
a
n
is
m
o
f
r
e
v
er
s
ib
le
d
ata
h
id
i
n
g
s
ch
e
m
e
w
h
er
e
th
e
p
ix
el
v
alu
es
ar
e
s
u
b
j
ec
ted
to
alter
atio
n
f
o
r
e
m
b
ed
d
in
g
t
h
e
s
ec
r
et
d
ata
w
it
h
in
a
v
id
eo
f
ile
.
T
h
e
p
r
im
e
o
b
j
ec
tiv
e
o
f
th
i
s
s
y
s
te
m
d
esi
g
n
is
to
en
s
u
r
e
b
etter
an
d
co
s
t
-
e
f
f
ec
ti
v
e
s
ec
u
r
ed
co
m
m
u
n
icat
io
n
.
A
co
n
tr
ib
u
to
r
y
p
ar
t
o
f
t
h
e
i
m
p
le
m
e
n
tat
io
n
i
s
it
s
u
n
iq
u
e
r
ec
o
v
er
y
p
r
o
ce
s
s
o
f
t
h
e
s
ec
r
et
d
ata
f
r
o
m
t
h
e
v
id
eo
w
it
h
o
u
t
a
n
y
d
o
m
i
n
an
t
tr
ac
es
o
f
t
h
e
d
is
to
r
tio
n
.
T
h
is
s
ec
tio
n
d
is
c
u
s
s
es
ab
o
u
t
t
h
e
i
m
p
le
m
e
n
tatio
n
s
ch
e
m
e
ad
o
p
ted
in
p
r
o
p
o
s
ed
s
y
s
te
m
w
i
t
h
r
esp
ec
t
to
s
y
s
te
m
ass
u
m
p
tio
n
,
i
m
p
le
m
e
n
tatio
n
s
t
r
ateg
y
,
a
n
d
ex
ec
u
tio
n
f
lo
w
.
2
.
1
.
Sy
s
t
e
m
a
s
s
u
m
ptio
n
T
h
e
p
r
ima
r
y
a
s
s
u
mp
tio
n
o
f
th
e
p
r
o
p
o
s
ed
s
y
s
te
m
i
s
th
a
t
th
e
b
o
th
th
e
s
ec
r
et
d
ata
to
b
e
h
id
d
en
an
d
th
e
s
o
u
r
ce
v
id
eo
,
ac
tin
g
as
a
co
v
er
f
ile,
is
u
n
ta
m
p
er
ed
an
d
r
etain
s
its
g
e
n
u
i
n
e
f
o
r
m
.
T
h
e
v
id
eo
f
ile
is
co
n
s
id
er
ed
to
b
e
th
e
u
n
co
m
p
r
e
s
s
ed
m
u
lt
i
m
ed
ia
f
ile
t
h
at
is
s
u
b
j
ec
ted
to
f
u
r
th
er
en
co
d
in
g
p
r
o
ce
s
s
.
T
h
e
s
ec
o
n
d
a
r
y
a
s
s
u
mp
tio
n
o
f
th
e
p
r
o
p
o
s
ed
s
tu
d
y
is
t
h
at
it
o
f
f
er
s
s
i
g
n
i
f
ican
t
r
o
b
u
s
tn
ess
,
p
er
ce
p
tib
ilit
y
,
s
ec
u
r
it
y
,
an
d
ca
p
ac
it
y
i
n
o
r
d
er
to
o
f
f
er
b
etter
f
o
r
m
o
f
r
ev
er
s
ib
le
d
ata
h
id
in
g
tech
n
iq
u
e.
T
h
e
tert
ia
r
y
a
s
s
u
mp
tio
n
o
f
th
e
p
r
o
p
o
s
ed
s
tu
d
y
is
t
h
at
t
h
e
tr
an
s
m
i
s
s
io
n
o
f
th
e
h
id
d
en
an
d
e
m
b
ed
d
ed
d
ata
is
ca
r
r
ied
o
u
t
b
y
a
tr
an
s
m
itter
t
h
at
is
o
p
er
atin
g
u
n
d
er
a
w
ir
eles
s
en
v
ir
o
n
m
en
t.
2
.
2
.
I
m
ple
m
ent
a
t
io
n
s
t
ra
t
eg
y
T
h
e
co
m
p
lete
i
m
p
le
m
en
ta
tio
n
s
tr
ate
g
y
o
f
th
e
p
r
o
p
o
s
ed
r
ev
er
s
ib
le
d
ata
h
id
in
g
s
ch
e
m
e
is
c
ar
r
ied
o
u
t
b
ased
o
n
p
r
o
p
o
s
ed
en
co
d
in
g
m
ec
h
a
n
i
s
m
t
h
at
co
n
s
id
er
all
t
h
e
p
o
s
i
ti
v
e
a
n
d
n
e
g
ati
v
e
asp
e
ct
o
f
v
ar
iab
le
b
lo
ck
s
ize.
T
h
e
p
r
i
m
e
co
n
tr
ad
ictio
n
is
t
h
at
a
s
m
aller
b
lo
ck
s
ize
o
f
f
er
s
b
etter
r
ed
u
ctio
n
to
th
e
p
r
o
b
ab
ilit
y
o
f
p
r
esen
ce
o
f
m
u
lt
ip
le
m
o
tio
n
s
o
v
er
a
b
lo
ck
.
Si
m
ilar
l
y
,
h
i
g
h
er
b
lo
ck
s
ize
o
f
f
er
s
ad
v
a
n
ta
g
e
o
f
co
n
tr
o
llin
g
th
e
o
v
er
h
ea
d
ass
o
ciate
d
w
it
h
p
ar
titi
o
n
i
n
g
p
r
o
ce
s
s
an
d
m
o
tio
n
v
ec
to
r
.
T
h
er
ef
o
r
e,
th
e
p
r
o
p
o
s
ed
s
y
s
te
m
i
n
teg
r
ate
s
t
h
ese
t
w
o
f
ac
ts
o
f
b
lo
ck
s
ize
i
n
o
r
d
er
to
en
h
a
n
ce
t
h
e
tr
ad
e
-
o
f
f
b
et
w
ee
n
d
is
to
r
tio
n
an
d
r
ate.
T
h
e
p
r
o
p
o
s
ed
s
ch
e
m
e
o
f
f
er
s
s
elec
tio
n
o
f
m
ac
r
o
-
b
lo
c
k
o
f
h
i
g
h
er
o
r
d
er
s
ize
s
a
n
d
n
o
t
th
e
s
m
aller
s
izes
(
e.
g
.
1
6
x
1
6
)
th
a
t
i
s
o
r
ig
i
n
all
y
d
e
f
in
ed
in
co
n
v
e
n
tio
n
a
l
H.
2
6
4
p
r
o
to
c
o
l.
T
h
e
s
elec
ted
m
ac
r
o
b
lo
ck
i
s
f
u
r
t
h
er
clas
s
i
f
ied
to
s
m
aller
s
izes
o
f
b
lo
ck
s
e.
g
.
4
x
4
o
r
8
x
8
.
T
h
is
ad
o
p
tio
n
o
f
s
tr
ateg
y
b
en
e
f
it
s
t
h
e
r
ev
er
s
ib
le
d
ata
h
id
in
g
p
r
o
ce
s
s
s
i
g
n
i
f
ican
t
l
y
a
s
it
m
i
n
i
m
ize
s
th
e
b
it
r
ate
o
f
t
h
e
f
r
a
m
e
as
t
h
e
h
o
m
o
g
en
eo
u
s
r
e
g
io
n
s
w
it
h
i
n
th
e
f
r
a
m
e
ar
e
s
u
b
j
ec
ted
to
co
d
in
g
u
s
i
n
g
a
s
m
aller
n
u
m
b
er
o
f
b
lo
ck
s
o
n
l
y
.
T
h
er
ef
o
r
e,
th
e
p
r
o
p
o
s
ed
s
y
s
te
m
ad
o
p
ts
lar
g
er
b
lo
ck
o
n
l
y
as
it
m
i
n
i
m
izes
th
e
d
ep
en
d
en
cie
s
o
f
h
ig
h
er
n
u
m
b
er
o
f
b
lo
ck
s
t
h
at
ar
e
r
eq
u
ir
ed
to
b
e
co
m
p
e
n
s
ated
o
f
an
y
m
o
tio
n
a
n
d
h
en
ce
it
m
i
n
i
m
izes
p
r
o
ce
s
s
i
n
g
ti
m
e
to
lar
g
e
ex
ten
t.
T
h
e
m
o
tio
n
co
m
p
e
n
s
atio
n
s
c
h
e
m
e
u
s
ed
i
n
p
r
o
p
o
s
ed
r
ev
er
s
ib
le
d
ata
h
id
in
g
s
c
h
e
m
e
ca
n
b
e
e
m
p
ir
icall
y
r
ep
r
esen
t
ed
as,
[x
2
y
2
]
[
(
x
1
+φ
1
)
(
y
1
+φ
2
)]
(
1
)
I
n
th
e
(
1
)
,
th
e
s
tu
d
y
co
n
s
id
er
s
th
at
th
er
e
ar
e
t
w
o
b
lo
ck
s
s
a
y
B
1
(x
1
y
1
)
an
d
B
2
(x
2
y
2
)
.
I
n
th
e
ab
o
v
e
ex
p
r
ess
io
n
,
th
e
v
ar
iab
le
φ
1
a
n
d
φ
2
r
ep
r
esen
ts
a
s
o
p
h
is
t
icate
d
m
ap
p
in
g
f
u
n
ctio
n
.
T
h
e
v
ar
i
ab
le
φ
1
is
co
m
p
u
ted
co
n
s
id
er
in
g
p
r
o
d
u
ct
o
f
b
asis
f
u
n
ct
io
n
as
w
e
ll a
s
m
o
tio
n
p
ar
am
eter
s
w
i
th
r
esp
ec
t to
th
e
a
v
ai
lab
le
p
ar
am
eter
s
o
f
m
o
tio
n
.
T
h
e
co
n
s
tr
u
ctio
n
o
f
th
e
b
asis
f
u
n
c
tio
n
μ
is
ca
r
r
ied
o
u
t
co
n
s
id
er
in
g
t
h
e
d
is
cr
ete
co
s
in
e
f
u
n
ctio
n
i
n
o
r
d
er
t
o
o
f
f
er
th
e
m
o
t
io
n
o
f
n
o
n
-
r
i
g
id
o
r
d
er
as it c
an
r
ed
u
ce
th
e
n
u
m
b
er
o
f
co
e
f
f
ic
ien
t
s
.
μ
(x
1
y
1
)
co
s
ψ
1
+
co
s
ψ
2
(
2
)
I
n
th
e
(
2
)
,
th
e
b
asis
f
u
n
ctio
n
is
s
h
o
w
n
w
it
h
r
esp
ec
t
to
b
lo
ck
s
o
f
b
o
th
v
er
tical
an
d
h
o
r
izo
n
ta
l
d
i
m
en
s
io
n
s
.
T
h
e
n
ex
t
p
ar
t
o
f
th
e
i
m
p
le
m
e
n
tatio
n
o
f
t
h
e
en
co
d
in
g
m
ec
h
an
is
m
w
ill
b
e
to
p
er
f
o
r
m
n
ec
e
s
s
ar
y
esti
m
atio
n
o
f
t
h
e
m
o
tio
n
p
ar
a
m
eter
s
th
at
w
ill
r
e
n
d
er
th
e
m
o
s
t
o
p
ti
m
al
b
lo
ck
p
r
ed
ictio
n
f
o
r
a
g
iv
e
n
r
e
f
er
en
ce
f
r
a
m
e.
T
h
er
e
ar
e
v
ar
io
u
s
s
t
u
d
ies
th
at
s
h
o
w
s
t
h
at
g
r
ad
ie
n
t
-
b
ased
i
m
ag
e
r
eg
is
tr
atio
n
ap
p
r
o
ac
h
f
o
r
th
e
p
u
r
p
o
s
e
o
f
esti
m
ati
n
g
s
u
ch
m
o
tio
n
p
ar
a
m
eter
s
.
T
h
e
p
r
im
e
co
n
tr
ib
u
tio
n
o
f
p
r
o
p
o
s
ed
s
y
s
te
m
is
th
at
it
m
ec
h
an
ize
s
th
e
g
r
ad
ien
t
-
b
ased
i
m
a
g
e
r
e
g
i
s
tr
atio
n
ap
p
r
o
ac
h
f
o
r
r
ed
u
ci
n
g
th
e
er
r
o
r
s
co
r
e
b
et
w
ee
n
t
w
o
b
lo
ck
s
B
1
(x
1
y
1
)
a
n
d
B
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2
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3
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E
x
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w
:
Algorithm for Embedding
In
put
: vid (video), e
f
(end frame), msg (message)
Output
: ess (embedded frames)
Start
1.
For
i=1:e
f
2. [f]=
g
1
(vid)
3. [b
2_msg
, b
1_msg
]=g
2
(msg)
4. [C
R
C
G
C
B
]=g
3
(e
f
)
5. [b
2
(r
i
) b
2
(g
i
) b
2
(b
i
)]=g
2
(C
R
C
G
C
B
)
6.
End
7.
For
j=1:r
8.
For
k=1:c
9
. [r
p
g
p
b
p
]=[(b
2
(r
i
) b
2
(g
i
) b
2
(b
i
)), (j,k))]
10. [r
p
g
p
b
p
]= b
1_msg
(count++)
11. r
i
g
i
b
i
(j, k)
r
p
g
p
b
p
12.
If
count==length(b
1_msg
)
13. ess
(i j k)
14.
End
15.
End
16.
End
End
T
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-
4
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x
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iz.
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p
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r
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L
in
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-
9
)
.
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h
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alg
o
r
ith
m
r
e
m
o
d
els
th
e
m
a
tr
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r
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y
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i
n
i
n
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i
n
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r
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er
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n
t
o
v
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th
e
r
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,
g
r
ee
n
,
a
n
d
b
lu
e
p
ix
els
(
L
i
n
e
-
1
0
)
.
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h
e
p
r
o
p
o
s
ed
s
y
s
te
m
e
x
tr
ac
t
s
th
e
n
e
w
v
al
u
e
o
f
i
,
j
,
a
n
d
k
to
b
e
ess
en
tial
ele
m
e
n
ts
wh
en
th
e
n
u
m
b
er
o
f
co
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n
t
i
s
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a
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t
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n
g
t
h
o
f
th
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ele
m
en
ts
o
f
t
h
e
b
in
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s
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r
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m
es
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ll
t
h
e
r
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m
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t
s
o
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n
e
w
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,
g
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n
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f
r
a
m
e
s
ar
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(
L
in
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1
1
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Fin
all
y
,
a
ll
th
e
es
s
e
n
ti
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f
r
a
m
e
s
(
ess
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(
L
in
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-
1
3
)
.
T
h
e
n
ex
t
p
ar
t
o
f
t
h
e
i
m
p
le
m
e
n
tatio
n
is
a
s
s
o
ciate
d
w
i
th
th
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en
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in
g
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p
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o
f
t
h
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f
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m
es
u
s
in
g
th
r
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d
if
f
er
en
t
v
ar
iab
les
v
iz.
i)
q
u
an
tiza
tio
n
p
ar
a
m
e
ter
,
ii)
s
p
ec
if
ic
f
r
a
m
e
s
ize,
a
n
d
iii)
s
ize
o
f
i
n
tr
a
b
lo
ck
.
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Evaluation Warning : The document was created with Spire.PDF for Python.
I
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Evaluation Warning : The document was created with Spire.PDF for Python.
I
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&
C
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p
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n
g
I
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N:
2
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o
u
t
f
o
r
n
u
m
b
er
o
f
b
its
(
NB
)
,
n
u
m
b
er
o
f
co
m
p
r
ess
ed
b
its
(
NC
B
)
,
an
d
co
m
p
r
es
s
io
n
r
atio
(
C
R
)
.
T
h
e
o
u
tco
m
e
s
h
o
w
s
t
h
at
co
m
p
r
es
s
io
n
r
atio
p
er
f
o
r
m
a
n
ce
i
s
g
o
o
d
f
o
r
r
ea
l
ti
m
e
i
m
a
g
es
a
s
w
e
ll
as
th
er
e
is
a
s
ig
n
i
f
ica
n
t
le
v
el
o
f
in
cr
e
m
en
t
o
f
o
t
h
er
f
ac
to
r
s
to
o
.
T
h
ese
p
er
f
o
r
m
a
n
ce
p
ar
am
eter
s
h
a
v
e
p
o
ten
tial
co
n
n
ec
ti
v
it
y
w
it
h
th
e
co
n
ce
p
t
o
f
r
ev
er
s
ib
le
d
ata
h
id
i
n
g
.
B
asical
l
y
,
th
e
i
n
cr
e
m
e
n
t
o
f
b
lo
ck
s
ize
w
ill
r
ed
u
ce
th
e
ca
p
ac
it
y
o
f
h
id
i
n
g
.
T
h
e
s
tu
d
y
o
u
t
co
m
e
s
h
o
w
s
t
h
at
NB
h
a
s
i
n
cr
ea
s
ed
f
o
r
r
ea
l
-
ti
m
e
f
r
a
m
e
s
as
w
ell
as c
o
lo
r
ed
i
m
a
g
e
i
n
a
v
er
ag
e
w
h
ile
it
d
o
esn
’
t
h
av
e
s
i
g
n
if
ican
t
i
m
p
r
o
v
e
m
e
n
t
in
g
r
a
y
s
ca
le
i
m
a
g
e.
Si
m
i
lar
l
y
,
N
C
B
as
w
ell
as
C
R
is
f
o
u
n
d
h
i
g
h
er
f
o
r
all
t
h
e
t
y
p
es
o
f
a
n
i
m
a
g
e
s
h
o
w
i
n
g
b
etter
co
m
p
r
ess
io
n
p
er
f
o
r
m
a
n
ce
w
h
i
le
p
er
f
o
r
m
i
n
g
r
ev
er
s
ib
le
d
ata
h
id
in
g
p
r
o
ce
s
s
.
As
r
ev
er
s
ib
le
d
ata
h
id
in
g
p
r
o
ce
s
s
w
i
ll
n
ee
d
ev
id
en
ce
t
h
at
h
o
s
t
i
m
ag
e
i
s
ex
ac
tl
y
s
i
m
i
lar
to
r
ec
o
n
s
tr
u
cted
i
m
ag
e
a
n
d
th
is
ap
p
r
o
x
i
m
a
ted
in
cr
ea
s
e
i
n
v
al
u
e
o
f
th
ese
p
er
f
o
r
m
a
n
ce
p
ar
a
m
eter
s
s
h
o
w
s
t
h
at
p
r
o
p
o
s
ed
s
y
s
te
m
o
f
f
er
s
b
etter
d
ata
r
ev
er
s
ib
ilit
y
in
h
id
in
g
.
T
ab
le
1
.
A
n
al
y
s
i
s
u
s
in
g
g
r
a
y
s
ca
le
i
m
a
g
e
F
r
a
me
si
z
e
S
I
B
V
i
d
e
o
si
z
e
N
.
B
N
.
C
.
B
C.R
Q
C
I
F
(
1
4
4
x
1
7
6
)
4
1
4
4
x
1
7
6
1
0
1
3
7
6
0
2
7
2
6
3
0
3
.
7
1
8
4
8
1
6
0
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1
9
2
1
2
2
8
8
0
0
3
3
1
6
8
2
3
.
7
0
4
8
16
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2
8
x
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2
8
9
8
3
0
4
0
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6
4
7
3
8
3
.
7
1
3
3
C
I
F
(
2
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x
3
5
2
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8
8
x
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5
2
4
0
5
5
0
4
0
8
5
1
3
8
4
4
.
7
6
2
9
8
2
8
8
x
3
5
2
4
0
5
5
0
4
0
8
6
5
7
3
9
4
.
6
8
3
9
16
3
2
0
x
3
8
4
4
9
1
5
2
0
0
1
0
1
9
2
6
9
4
.
8
2
2
3
W
V
G
A
(
4
8
0
x
8
0
0
)
4
4
8
0
x
8
0
0
4
0
5
5
0
4
0
8
6
5
7
3
9
4
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6
8
3
9
8
4
8
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8
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6
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2
2
0
6
6
4
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6
.
9
6
0
8
16
5
1
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x
8
3
2
1
7
0
3
9
3
6
0
2
4
6
9
9
4
5
6
.
8
9
8
7
H
D
(
7
2
0
x
1
2
8
0
)
4
7
2
0
x
1
2
8
0
3
6
8
6
4
0
0
0
4
0
4
3
9
6
9
9
.
1
1
5
8
8
7
3
6
x
1
2
8
0
3
7
6
8
3
2
0
0
4
1
6
7
9
6
7
9
.
0
4
1
1
16
7
0
4
x
1
2
8
0
3
6
0
4
4
8
0
0
4
2
0
0
3
2
7
8
.
5
8
1
4
T
ab
le
2
.
A
n
al
y
s
i
s
u
s
in
g
c
o
lo
r
i
m
ag
e
c
o
d
in
g
F
r
a
me
si
z
e
S
I
B
V
i
d
e
o
si
z
e
N
.
B
N
.
C
.
B
C.R
Q
C
I
F
(
1
4
4
x
1
7
6
)
4
1
4
4
x
1
7
6
4
0
5
5
0
4
1
7
8
2
1
8
2
.
2
7
5
5
8
1
6
0
x
1
9
2
4
9
1
5
2
0
2
1
3
5
0
8
2
.
3
0
2
1
16
1
2
8
x
1
9
2
3
9
3
2
1
6
1
7
4
7
2
7
2
.
2
7
6
3
C
I
F
(
2
8
8
x
3
5
2
)
4
2
8
8
x
3
5
2
1
6
2
2
0
1
6
5
5
9
1
1
3
2
.
9
0
1
1
8
2
8
8
x
3
5
2
1
6
2
2
0
1
6
5
6
0
4
5
3
2
.
8
9
4
1
16
3
2
0
x
3
8
4
1
9
6
6
0
8
0
6
4
8
3
1
2
3
.
0
3
2
6
W
V
G
A
(
4
8
0
x
8
0
0
)
4
4
8
0
x
8
0
0
6
1
4
4
0
0
0
1
4
8
3
7
1
7
4
.
1
4
1
8
4
8
0
x
8
0
0
6
1
4
4
0
0
0
1
4
8
5
4
8
4
4
.
1
3
6
16
5
1
2
x
8
3
2
6
8
1
5
7
4
4
1
6
2
7
9
4
1
4
.
1
8
6
7
H
D
(
7
2
0
x
1
2
8
0
)
4
7
2
0
x
1
2
8
0
6
8
1
5
7
4
4
1
9
2
7
9
4
1
4
.
1
8
6
7
8
7
3
6
x
1
2
8
0
1
5
0
7
3
2
8
0
2
9
0
1
0
3
3
5
.
1
9
5
8
16
7
0
4
x
1
2
8
0
1
4
4
1
7
9
2
0
2
8
4
8
8
5
3
5
.
0
6
1
T
ab
le
3
.
A
n
al
y
s
i
s
u
s
in
g
r
ea
l ti
m
e
i
m
ag
e
F
r
a
me
si
z
e
I
.
B
.
S
(
i
n
t
e
r
n
a
l
b
l
o
c
k
s
i
z
e
)
V
i
d
e
o
si
z
e
N
.
B
N
.
C
.
B
C.R
Q
C
I
F
(
1
4
4
x
1
7
6
)
4
1
4
4
x
1
7
6
4
0
5
5
0
4
1
7
7
6
6
2
2
.
2
8
2
4
8
1
6
0
x
1
9
2
4
9
1
5
2
0
2
1
3
7
4
9
2
.
2
9
9
5
16
1
2
8
x
1
9
2
3
9
3
2
1
6
1
7
1
7
2
2
2
.
2
8
9
8
C
I
F
(
2
8
8
x
3
5
2
)
4
2
8
8
x
3
5
2
1
6
2
2
0
1
6
5
5
9
0
6
5
2
.
9
0
1
3
8
2
8
8
x
352
1
6
2
2
0
1
6
5
6
0
2
8
2
.
8
9
5
16
3
2
0
x
3
8
4
1
9
6
6
0
8
0
6
4
9
7
4
4
3
.
0
2
5
9
S
I
B
W
V
G
A
(
4
8
0
x
8
0
0
)
4
4
8
0
x
8
0
0
6
1
4
4
0
0
0
1
4
8
6
4
9
0
4
.
1
3
3
2
8
4
8
0
x
8
0
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6
1
4
4
0
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1
4
8
8
8
9
0
4
.
1
2
6
6
16
5
1
2
x
8
3
2
6
8
1
5
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4
4
1
6
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6
6
0
5
4
.
1
9
0
2
H
D
(
7
2
0
x
1
2
8
0
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4
7
2
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1
2
8
0
1
4
7
4
5
6
0
0
2
8
1
2
8
8
5
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1
5
3
5
8
7
3
6
x
1
2
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0
1
5
0
7
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0
2
8
9
8
6
7
4
5
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2
0
0
1
16
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4
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1
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9
2
0
2
8
5
3
0
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8
5
.
0
5
3
4
T
h
e
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tu
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y
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tco
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p
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.
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[4
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[5
]
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.
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[6
]
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p
.
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.
[7
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Ra
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R
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[8
]
X.
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