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[
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,
[
2
]
.
T
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e
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th
e
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ili
tar
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n
ce
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er
ativ
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n
ts
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co
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p
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s
.
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h
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.
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in
t
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m
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s
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g
e
[
4
]
.
I
n
o
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w
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d
s
,
th
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a
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m
o
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to
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ter
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it.
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to
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th
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f
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llo
w
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co
m
p
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n
en
t
[
5
]
;
a)
T
h
e
co
v
er
m
ed
ia
(
i
m
a
g
e,
au
d
i
o
,
v
id
eo
,
tex
t,
o
th
er
)
th
at
w
ill
h
id
e
d
ata
.
b)
Th
e
s
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r
et
m
e
s
s
a
g
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(
i
m
ag
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au
d
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,
v
id
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,
te
x
t,
o
th
er
)
B
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t
t
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m
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t
w
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is
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Ho
w
e
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th
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ca
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all
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lt
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m
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as secr
et
m
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ag
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s
.
c)
T
h
e
s
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ctio
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(
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m
b
ed
d
in
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m
)
w
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ca
n
ca
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(
s
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s
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-
1
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if
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K)
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al
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m
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ag
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[4
]
,
[
5]
.
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-
lin
er
a
n
d
lin
er
f
ilter
i
n
g
’
s
,
r
an
d
o
m
n
o
is
e
ad
d
itio
n
,
r
o
tatio
n
,
s
ca
lin
g
,
an
d
lo
o
s
e
co
m
p
r
ess
io
n
[
1
1
]
,
[
1
2
]
.
A
ll th
i
s
is
s
h
o
w
n
in
Fig
u
r
e
1
:
Fig
u
r
e
1
.
A
p
p
licatio
n
f
ea
t
u
r
es
in
th
e
i
m
a
g
e
s
te
g
a
n
o
g
r
ap
h
y
I
f
th
er
e
is
a
p
ictu
r
e
w
it
h
an
i
m
p
lan
ted
m
e
s
s
a
g
e
th
at
i
s
s
tea
d
y
f
r
o
m
w
h
er
e
th
e
p
ictu
r
e
s
ar
e
d
r
aw
n
an
d
th
e
e
m
b
ed
d
ed
alg
o
r
it
h
m
is
u
n
d
etec
tab
le.
Fo
r
in
s
tan
ce
,
i
n
u
tili
zi
n
g
t
h
e
co
m
m
o
tio
n
s
e
g
m
en
t
o
f
a
n
ad
v
a
n
ce
d
p
ictu
r
e
s
te
g
a
n
o
g
r
ap
h
y
s
tr
ate
g
y
is
n
ee
d
ed
i
n
o
r
d
er
t
o
e
m
b
ed
a
s
ec
r
et
m
ess
a
g
e.
T
h
is
is
d
o
n
e
w
ith
o
u
t
r
o
lli
n
g
o
u
t
m
ea
s
u
r
ab
le
i
m
p
r
o
v
e
m
e
n
t to
t
h
e
n
o
is
e
i
n
t
h
e
ca
r
r
ier
.
T
h
e
in
f
a
cilit
y
to
d
etec
t t
h
e
h
id
d
en
m
es
s
ag
e
i
s
i
n
f
o
r
m
atio
n
b
y
th
e
m
ea
s
u
r
e
m
en
t
o
f
t
h
e
s
ec
r
et
m
es
s
ag
e
a
n
d
t
h
e
co
n
f
ig
u
r
at
io
n
o
f
t
h
e
co
v
er
i
m
a
g
e
co
n
t
e
n
t
[
1
1
]
.
Me
an
w
h
ile,
in
v
is
ib
ili
t
y
(
p
er
ce
p
tu
al
tr
an
s
p
ar
en
c
y
)
is
an
id
ea
t
h
at
d
ep
en
d
s
o
n
h
u
m
an
v
is
u
al
o
r
s
o
u
n
d
s
y
s
te
m
s
.
T
h
e
i
m
p
lan
ted
d
ata
b
ec
o
m
e
s
s
u
b
tle
i
f
a
n
o
r
m
al
h
u
m
a
n
b
ein
g
is
a
n
ab
le
to
r
ec
o
g
n
ize
b
et
w
e
en
t
h
e
b
ea
r
er
s
w
it
h
co
n
ce
aled
d
ata,
an
d
th
e
o
n
es
w
it
h
o
u
t
th
e
d
ata
[
1
1
]
,
[
1
2
]
.
I
t
is
ess
e
n
tial
t
h
at
t
h
er
e
is
n
o
s
i
g
n
i
f
ican
t
d
eg
r
ad
atio
n
o
r
an
y
lo
s
s
o
f
p
er
ce
p
tu
al
q
u
al
it
y
o
f
t
h
e
co
v
er
in
th
e
e
m
b
ed
d
in
g
p
r
o
ce
s
s
.
Secu
r
it
y
is
t
h
e
f
i
n
al
f
ea
t
u
r
e
in
t
h
e
e
m
b
ed
d
ed
alg
o
r
ith
m
i
s
s
a
f
e
i
f
th
ese
i
s
n
o
r
e
m
o
v
al
to
th
e
i
n
f
o
r
m
at
io
n
ev
e
n
a
f
ter
it
is
b
ei
n
g
d
is
co
v
er
ed
b
y
an
attac
k
er
.
A
f
ter
all
it d
ep
en
d
s
o
n
th
e
to
tal
i
n
f
o
r
m
atio
n
o
f
th
e
e
m
b
ed
d
ed
alg
o
r
it
h
m
a
n
d
th
e
s
e
cr
et
k
e
y
[
1
0
]
,
[
1
2
]
.
3.
RE
L
AT
E
D
R
E
VI
E
W
T
h
e
r
ev
ie
w
is
b
ased
o
n
t
wo
p
ar
ts
w
h
ich
ar
e
i
m
a
g
e
c
o
m
p
r
es
s
io
n
t
y
p
es
a
n
d
p
r
o
p
o
r
t
io
n
f
ile
f
o
r
m
at
u
s
ed
.
3
.
1
.
I
m
a
g
e
Co
m
pre
s
s
io
n T
y
p
es
Fo
r
th
e
b
eg
i
n
n
i
n
g
it
e
x
p
lo
r
e
th
e
ca
u
s
es
o
f
th
e
s
elec
tio
n
o
f
r
esear
ch
er
s
in
th
e
t
w
o
t
y
p
es
o
f
i
m
a
g
e
co
m
p
r
es
s
io
n
i
n
th
e
u
s
e
o
f
d
a
ta
co
n
ce
al
m
e
n
t.
A
cc
o
r
d
in
g
to
Fig
u
r
e
2
th
e
lo
s
s
y
co
m
p
r
es
s
io
n
h
as
t
h
e
lar
g
e
s
t
p
r
o
p
o
r
tio
n
co
m
p
ar
ed
to
th
e
l
o
s
s
les
s
co
m
p
r
es
s
io
n
.
T
h
is
is
b
ec
au
s
e
v
ar
y
s
m
all
f
ile
s
ize
an
d
a
lo
t
o
f
to
o
ls
,
p
lu
g
i
n
s
an
d
s
o
f
t
w
ar
e
s
u
p
p
o
r
t
th
e
lar
g
est
p
r
o
p
o
r
tio
n
.
I
n
ad
d
iti
o
n
,
th
e
r
elu
cta
n
ce
o
f
s
o
m
e
r
es
ea
r
ch
er
b
ec
au
s
e
o
f
q
u
alit
y
d
e
g
r
ad
es
w
ith
t
h
e
h
ig
h
est
p
r
o
p
o
r
tio
n
o
f
co
m
p
r
es
s
io
n
th
at
m
a
k
e
it
h
ar
d
to
r
etu
r
n
t
o
it
is
o
r
ig
in
al
s
iz
e
af
ter
co
m
p
r
es
s
in
g
p
r
o
ce
s
s
.
M
ea
n
w
h
ile,
t
h
e
lo
s
s
les
s
co
m
p
r
e
s
s
io
n
is
lo
w
a
m
o
n
g
s
o
m
e
r
ese
ar
ch
er
s
w
h
o
b
elie
v
e
th
at
it
is
ac
t
u
all
y
n
o
t
a
lo
s
s
o
f
q
u
alit
y
la
s
t
r
ath
er
a
s
li
g
h
t
d
ec
r
ea
s
e
in
i
m
ag
e
f
ile
s
ize
s
.
it
m
a
y
also
b
e
f
o
r
m
th
ei
r
v
ie
w
t
h
at
lar
g
er
f
ile
s
t
h
an
if
y
o
u
w
er
e
to
u
s
e
lo
s
s
y
co
m
p
r
ess
io
n
[1
]
,
[
3
]
,
[
5
]
,
[
7
]
,
[
8
]
,
[
12
]
,
[
13
]
-
[
5
0
]
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
d
o
n
esia
n
J
E
lec
E
n
g
&
C
o
m
p
Sci
I
SS
N:
2502
-
4752
A
n
a
lytica
l R
ev
iew
o
n
Gra
p
h
ic
a
l F
o
r
ma
ts
Used
in
I
ma
g
e
S
teg
a
n
o
g
r
a
p
h
ic
C
o
mp
r
ess
io
n
(
R
o
s
h
id
i D
in
)
443
Fig
u
r
e
2
.
I
m
a
g
e
co
m
p
r
es
s
io
n
t
y
p
e
s
th
a
t u
s
ed
in
last
d
ec
ad
e
3
.
2
.
G
ra
ph
ica
l F
ile
F
o
r
m
a
t
Used
T
h
er
e
ar
e
f
iv
e
m
aj
o
r
g
r
ap
h
ica
l
f
ile
f
o
r
m
ats
u
s
ed
w
h
ich
is
s
h
o
w
n
i
n
Fi
g
u
r
e
3
.
T
h
e
lar
g
est
p
r
o
p
o
r
tio
n
is
r
ep
r
esen
ted
b
y
r
ester
f
o
r
m
a
t
f
o
llo
w
ed
b
y
v
ec
to
r
f
o
r
m
at,
r
a
w
f
o
r
m
at
a
n
d
co
m
p
o
u
n
d
f
o
r
m
at
o
f
t
h
e
s
m
al
les
t
p
r
o
p
o
r
tio
n
s
is
th
e
m
etad
ata
f
o
r
m
at.
Fig
u
r
e
3
.
P
er
ce
n
tag
e
r
esear
ch
o
f
g
r
ap
h
ical
f
ile
f
o
r
m
at
s
u
s
ed
Mo
s
t
r
esear
ch
er
s
te
n
d
to
s
tu
d
y
an
d
u
s
e
r
aster
f
o
r
m
at
as
t
h
e
y
b
eliev
e
t
h
at
t
h
e
g
r
ap
h
ics
ar
e
h
ig
h
l
y
s
u
itab
le
f
o
r
n
o
n
-
li
n
er
ar
t
i
m
ag
es
s
u
c
h
as
d
ig
italized
p
h
o
to
g
r
ap
h
s
,
s
ca
n
n
ed
ar
t
w
o
r
k
o
r
d
etailed
g
r
ap
h
ics.
T
h
is
is
b
ec
au
s
e
th
er
e
ar
e
s
u
b
j
ec
tiv
e
ch
r
o
m
atic
g
r
ad
atio
n
s
u
n
d
ef
i
n
ed
lin
e
s
,
s
h
ap
es,
a
n
d
co
m
p
lex
co
m
p
o
s
i
tio
n
p
r
esen
t
in
r
aster
f
o
r
m
at.
Ho
wev
er
,
th
e
d
is
ad
v
an
ta
g
e
o
f
th
is
f
o
r
m
at
i
s
t
h
e
i
m
ag
e
m
i
g
h
t
s
u
f
f
er
f
r
o
m
a
m
alad
y
ca
lled
i
m
ag
e
d
e
g
r
ad
atio
n
b
ec
au
s
e
r
aster
i
m
ag
e
ar
e
p
ix
e
l
-
b
a
s
ed
.
A
s
a
r
es
u
lt,
t
h
e
i
m
ag
e
m
ig
h
t
g
et
b
l
u
r
r
y
an
d
i
m
p
r
ec
is
e
w
h
e
n
b
lo
w
n
u
p
,
j
ag
g
ed
,
an
d
r
o
u
g
h
li
k
e
w
is
e
s
ee
n
in
p
h
o
to
g
r
ap
h
ic,
i
m
a
g
e.
I
n
u
p
-
clo
s
e,
a
p
er
s
o
n
ca
n
s
ee
in
d
i
v
id
u
al
p
i
x
els
co
m
p
r
i
s
e
th
e
i
m
ag
e.
Fo
r
ex
a
m
p
le,
r
aster
-
b
ased
lo
g
o
ca
n
b
e
m
ag
n
i
f
ied
to
1
0
0
0
[
1
5
]
,
[
46
]
-
[
4
9
]
.
W
h
en
s
tu
d
y
i
n
g
in
d
ep
th
t
h
e
s
tu
d
y
o
f
w
h
ic
h
t
y
p
es
o
f
r
aster
i
m
a
g
es
r
esear
ch
er
s
p
r
ef
er
to
s
t
u
d
y
j
p
eg
is
t
h
e
m
o
s
t
p
o
p
u
lar
as
it
h
as
h
ig
h
co
n
tr
o
lled
d
eg
r
ee
o
f
co
m
p
r
e
s
s
io
n
is
ch
ar
ac
ter
ized
b
y
s
m
a
ll
f
ile
s
ize.
T
h
e
f
o
r
m
at
is
co
m
p
a
tib
le
a
s
if
d
is
p
lay
s
e
x
ac
tl
y
h
o
w
th
e
i
m
ag
e
s
ap
p
ea
r
to
b
e
in
an
y
b
r
o
w
s
er
s
,
te
x
t
a
n
d
g
r
ap
h
ic
p
r
o
g
r
am
m
er
s
,
o
n
all
co
m
p
u
te
r
s
,
tab
lets
an
d
m
o
b
ile
d
ev
ices
.
I
t
is
in
d
ee
d
ap
p
licab
le
to
b
e
u
s
ed
in
f
u
ll
-
co
lo
r
r
ea
lis
tic
i
m
a
g
e
w
i
th
m
an
y
co
l
o
r
an
d
co
n
tr
ast
tr
an
s
itio
n
s
as
th
e
p
ict
u
r
e
q
u
a
lit
y
i
s
h
i
g
h
w
it
h
s
m
a
ll
d
eg
r
ee
o
f
co
m
p
r
es
s
io
n
.
A
l
l
t
h
e
ab
o
v
e
r
ea
s
o
n
s
m
ad
e
t
h
is
g
e
n
r
e
a
f
a
v
o
r
ite
f
o
r
r
esear
ch
er
s
to
s
t
u
d
y
an
d
ch
o
o
s
e
i
n
t
h
eir
r
esear
ch
[
5
]
,
[
16
]
,
[
26
]
-
[
41
]
,
[
5
0
]
.
4.
CO
NCLU
SI
O
N
T
h
e
m
o
s
t
o
b
v
io
u
s
f
i
n
d
in
g
to
e
m
er
g
e
f
r
o
m
th
is
s
tu
d
y
is
b
y
s
t
u
d
y
i
n
g
th
e
r
esear
ch
r
ela
ted
to
th
e
co
n
ce
al
m
e
n
t
o
f
d
ata
d
u
r
i
n
g
t
h
e
las
t
d
ec
ad
e
an
d
f
in
d
i
n
g
o
u
t
t
h
e
r
ea
s
o
n
s
f
o
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[4
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F
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Da
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Evaluation Warning : The document was created with Spire.PDF for Python.
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F
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