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th
e
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m
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e
c
o
m
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re
s
s
i
o
n
p
ro
c
e
s
s
wit
h
l
e
s
s
e
r
tr
a
n
s
m
i
s
s
i
o
n
b
a
n
d
wid
t
h
.
So
i
n
th
i
s
p
a
p
e
r
we
a
r
e
p
ro
p
o
s
i
n
g
a
n
e
w
i
m
a
g
e
c
o
m
p
re
s
s
i
o
n
te
c
h
n
i
q
u
e
fo
r
th
e
c
o
m
p
re
s
s
i
o
n
o
f
th
e
s
a
te
l
l
i
te
i
m
a
g
e
s
b
y
u
s
i
n
g
th
e
Reg
i
o
n
o
f
In
te
re
s
t
(RO
I)
b
a
s
e
d
o
n
th
e
l
o
s
s
y
i
m
a
g
e
te
c
h
n
i
q
u
e
c
a
l
l
e
d
th
e
Q
u
a
n
ti
z
a
ti
o
n
e
n
c
o
d
i
n
g
a
l
g
o
ri
t
h
m
fo
r
th
e
c
o
m
p
re
s
s
i
o
n
.
Th
e
p
e
rf
o
rm
a
n
c
e
o
f
o
u
r
m
e
th
o
d
c
a
n
b
e
e
v
a
l
u
a
t
e
d
a
n
d
a
n
a
l
y
z
i
n
g
th
e
PSNR
v
a
l
u
e
s
o
f
th
e
o
u
tp
u
t
i
m
a
g
e
s
.
Key
w
ords
:
Com
p
re
s
s
i
o
n
,
L
o
s
s
y
,
Q
u
a
n
ti
z
a
ti
o
n
,
RO
I,
a
n
d
,
PS
NR
Copy
righ
t
©
2
0
1
7
In
s
titu
te
o
f
Adv
a
nc
e
d
Eng
in
e
e
ring
a
nd
Sc
ie
nc
e
.
All
righ
t
s
re
s
e
rve
d.
1.
Int
r
o
d
u
ctio
n
Me
d
i
c
al
i
m
ag
e
c
om
pres
s
i
on
b
as
ed
on
h
y
br
i
d
D
W
T
w
i
th
B
ac
k
P
r
op
ag
at
i
o
n
Neura
l
Net
w
ork
(
B
P
NN)
ap
pro
ac
h
i
s
de
s
c
r
i
b
ed
i
n
[1]
.
Com
pres
s
ed
i
m
ag
e
q
ua
l
i
t
y
i
s
i
m
prov
ed
b
y
D
W
T
tec
hn
i
qu
e
an
d
B
P
a
l
go
r
i
th
m
c
an
be
w
i
de
l
y
us
ed
as
a
l
e
arni
ng
a
l
g
orit
hm
.
Reg
i
on
of
i
nte
r
es
t
co
di
n
g
t
ec
hn
i
qu
es
f
or
m
ed
i
c
al
i
m
ag
e
c
om
pres
s
i
on
i
s
de
s
c
r
i
be
d
i
n
[
2].
RO
I
c
od
i
n
g
i
s
to
pe
r
m
i
t
the
us
e
of
arb
i
tr
ar
i
l
y
a
nd
m
ul
ti
pl
e
s
ha
p
ed
RO
Is
w
i
th
r
an
d
om
w
ei
gh
ts
de
s
c
r
i
b
i
n
g
th
e
d
eg
r
e
e
of
s
i
gn
i
f
i
c
an
c
e
f
or ev
er
y
RO
I
i
m
ag
es
.
A
n
ad
a
pti
v
e
s
am
pl
i
ng
al
g
orit
hm
i
s
u
s
ed
i
n
[3]
,
f
or
ev
al
ua
t
i
ng
the
area
d
i
f
f
e
r
en
c
e
be
t
w
e
en
th
e
pred
i
c
ted
an
d
the
c
orr
ec
t
po
i
nts
to
de
c
i
de
the
s
i
gn
i
f
i
c
an
t
c
oe
f
f
i
c
i
en
ts
.
T
he
pa
pe
r
di
s
c
us
s
ed
i
n
[
4]
us
es
th
e
h
y
br
i
d
al
go
r
i
t
hm
f
or
the
i
m
ag
e
c
om
pres
s
i
on
tec
hn
i
qu
e.
T
he
h
y
br
i
d
al
g
orit
hm
i
s
D
W
T
f
or
ac
hi
ev
i
ng
a
h
i
g
he
r
c
om
pres
s
i
on
r
ati
o
an
d
t
he
DCT
w
i
t
h
the
Huf
fm
an
al
g
orit
hm
i
s
us
ed
t
o p
r
es
er
v
e t
he
qu
a
l
i
t
y
of
th
e rec
on
s
t
r
uc
ted
i
m
ag
e.
Regi
on
of
i
nte
r
es
t
(
RO
I)
ba
s
ed
on
c
om
pres
s
i
on
of
i
m
ag
e
i
s
di
s
c
us
s
ed
i
n
[5]
f
or
c
l
as
s
i
f
i
c
ati
on
ap
p
l
i
c
ati
on
s
.
T
he
m
eth
od
i
s
a
f
us
i
on
of
bo
th
l
os
s
y
an
d
l
os
s
l
es
s
c
o
m
pres
s
i
on
a
l
o
ng
wi
th
wav
el
e
ts
tr
an
s
f
or
m
s
l
i
k
e
E
m
be
dd
ed
Z
ero
-
T
r
ee
W
av
el
et
(
E
Z
W
)
i
s
as
de
r
i
v
ed
tec
hn
i
q
ue
s
.
A
m
eth
od
to
i
nc
r
ea
s
e
th
e
c
o
m
pres
s
i
on
r
ati
o
wi
th
l
es
s
c
om
pu
tat
i
on
al
b
urde
n
i
s
di
s
c
us
s
ed
i
n
[6]
.
I
n
order
to
d
ec
om
p
os
i
ti
on
of
a
s
ub
-
bl
oc
k
i
nto
eq
u
al
s
i
z
e
d
ba
n
ds
,
the
D
CT
i
s
us
ed
as
a
ba
n
dp
as
s
f
i
l
ter an
d a
hi
gh
s
i
m
i
l
arit
y
propert
y
i
s
f
ou
n
d a
m
on
g t
h
e
ba
nd
s
.
A
n
i
m
prov
ed
S
P
IRT
al
go
r
i
thm
i
n
whi
c
h
m
os
t
of
the
en
erg
y
i
s
i
n
ten
s
e
i
n
t
h
e
l
o
w
f
r
eq
ue
nc
y
s
u
b
-
ba
n
d
af
ter
wav
el
e
t
tr
an
s
f
orm
i
s
di
s
c
us
s
ed
i
n
[7]
.
A
n
i
m
ag
e
c
om
pres
s
i
on
m
eth
od
ba
s
ed
o
n
Int
eg
er
W
av
el
et
T
r
an
s
f
or
m
(
I
W
T
)
an
d
S
V
D
i
s
d
i
s
c
us
s
ed
i
n
[8]
.
A
graph
ba
s
ed
qu
an
ti
z
at
i
on
i
s
us
ed
i
n
the
m
eth
od
b
ut
th
e
ad
ap
ti
v
e
H
uf
fm
an
c
od
i
ng
i
s
us
ed
f
or
en
tr
op
y
e
nc
od
i
ng
.
T
o
c
o
m
p
r
es
s
the
i
nf
o
r
m
ati
on
tha
t
are
s
en
t
f
or
m
on
e
pl
ac
e
to
a
no
t
he
r
b
y
m
ea
ns
of
the
l
o
w
f
r
eq
ue
nc
y
c
oe
f
f
i
c
i
en
ts
t
he
LZ
W
al
go
r
i
t
hm
i
s
us
ed
i
n
[9]
.
T
hi
s
c
om
pres
s
i
on
al
g
orit
hm
i
s
do
ne
f
or
the
RO
I
ba
s
ed
ex
tr
ac
ted
i
m
ag
e.
T
he
s
tat
i
s
ti
c
s
an
al
y
s
i
s
as
s
oc
i
at
ed
wi
th
d
i
f
f
er
en
c
e
i
m
ag
e
i
s
d
i
s
c
us
s
ed
i
n
[1
0].
T
he
pa
p
er
i
s
ba
s
e
d
on
the
s
tat
i
s
t
i
c
al
a
na
l
y
s
i
s
m
ea
s
ure
w
he
n
c
o
m
pa
r
ed
w
i
th
the
c
om
pres
s
i
on
of
th
e
l
os
s
l
es
s
i
m
ag
e.
2.
P
r
o
p
o
se
d
S
y
st
em
O
ur
propos
ed
s
y
s
tem
i
s
a
m
eth
od
of
l
os
s
y
ba
s
ed
i
m
ag
e
c
om
pres
s
i
on
s
c
he
m
e
ba
s
ed
on
the
qu
an
t
i
z
ati
on
en
c
o
d
i
ng
al
g
orit
hm
.
In
thi
s
m
eth
od
t
he
c
om
pres
s
i
on
i
s
do
ne
b
y
ex
tr
ac
ti
ng
the
Evaluation Warning : The document was created with Spire.PDF for Python.
IJE
E
CS
IS
S
N:
2
50
2
-
4
75
2
Q
ua
nt
i
z
ati
on
E
nc
od
i
n
g
A
l
g
orit
h
m B
as
ed
S
at
el
l
i
t
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m
ag
e Co
m
pres
s
i
on
(
A
n
an
d
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)
741
RO
I
r
eg
i
o
ns
f
r
o
m
the
orig
i
na
l
s
ate
l
l
i
t
e
i
m
ag
es
.
T
he
n
the
c
om
pres
s
i
on
al
go
r
i
thm
of
qu
an
ti
z
at
i
o
n
en
c
od
i
ng
i
s
ap
pl
i
e
d a
n
d i
s
c
o
m
pres
s
ed
. T
he
f
r
a
m
ew
ork
o
f
th
e s
y
s
tem
i
s
s
ho
wn i
n
F
ig
ure
1.
3.
E
xtrac
t
ion
of
RO
I
T
he
RO
I
ex
tr
ac
ti
on
proc
es
s
i
s
the
f
i
r
s
t
s
tep
i
n
ou
r
pr
o
po
s
ed
s
y
s
tem
.
T
hi
s
RO
I
i
m
ag
e
i
s
the
i
m
ag
es
tha
t
are
us
e
d
f
or
the
c
om
pres
s
i
on
proc
es
s
s
o
as
to
i
nc
r
ea
s
e
ou
r
c
o
m
pres
s
i
on
ac
c
urac
y
.
T
he
s
y
s
tem
i
s
s
ai
d
t
o
b
e
as
t
he
l
os
s
y
c
om
pres
s
i
on
m
eth
od
.
T
he
r
ea
s
on
f
or
thi
s
i
s
du
e
to
the
us
ag
e
of
the
RO
I
i
m
ag
e
f
or
the
c
o
m
pres
s
i
on
proc
es
s
.
F
r
o
m
the
RO
I
i
m
ag
es
the
l
os
s
y
c
o
m
pres
s
i
on
i
s
d
on
e
b
y
us
i
ng
th
e q
ua
nt
i
z
at
i
on
en
c
o
di
n
g a
l
go
r
i
t
hm
.
F
i
gu
r
e
1
.
F
r
am
ew
ork
of
th
e p
r
op
os
e
d i
m
ag
e c
om
pres
s
i
on
s
y
s
tem
4.
Q
u
ant
iz
atio
n
E
n
cod
ing
A
l
g
o
r
it
h
m
T
he
qu
an
t
i
z
at
i
on
al
go
r
i
t
hm
i
s
a
t
y
p
e
of
the
c
om
pres
s
i
on
a
l
go
r
i
thm
tha
t
i
s
us
ed
f
or
th
e
c
o
m
pres
s
i
on
proc
es
s
.
Her
e
the
RO
I
i
m
ag
es
ex
tr
ac
ted
f
r
o
m
the
orig
i
na
l
i
m
ag
es
ar
e
tak
en
as
th
e
i
np
ut
f
or
the
qu
an
ti
z
a
ti
o
n
e
nc
od
i
ng
i
s
us
ed
f
or
c
o
m
pre
s
s
i
on
.
T
ha
t
al
l
o
w
s
the
pro
b
ab
i
l
i
t
y
de
ns
i
t
y
m
od
el
i
ng
f
un
c
t
i
on
s
b
y
the
protot
y
p
e
v
ec
tors
.
T
hi
s
u
s
ua
l
l
y
wor
k
s
b
y
ob
t
ai
ni
n
g
the
v
a
l
ue
s
b
y
m
ea
ns
of
en
c
od
i
ng
m
ul
ti
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d
i
m
en
s
i
on
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Ref
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DC
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IEEE
2
8
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An
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a
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In
t
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Bi
o
l
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So
c
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e
ty
.
2006
:
4
7
6
7
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7
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0
.
Evaluation Warning : The document was created with Spire.PDF for Python.