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8/18/2019 DSIP Case Studies
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A 1.
1.
DWT D W T. I ,
(DWT) . A
, F : ( ).
1.1.
T DWT H A H. F
2 , H , . T ,
: 2 − 1 ff .
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O (
), N (
). W . C .
2. A
T , ,
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, . P
. DWT
.
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1. B
T . F
E , C/ ,
, .. .
T . T
.
I , .
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A 2.
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I . V
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5
A 3: C A C AA
C :
1. C .
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1931: 700 , 546.1 , 435.8 .
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T I P RGB (, ),
CMY CMYK (), HIS ( .
8/18/2019 DSIP Case Studies
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W RGB CMY ,
, , . T, , , (HSI) , .T
I=(R + G + B)/3
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A 4: A C
1.
H
. G
. I
. T
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2. F . T
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,
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3.
I , ,
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, ( ). T
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A 5. A C C A
A
T
. I , (DWT)
. A ,
F T : ( ).
( ). N
JPEG 2000 ECW , REDCODE, BBC' D,
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F . T
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/
. A 1D 2D "
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T ,
. T FIR DSP,
MACP , FIR . T
/ , :
( )1
1,12
H =
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A
( )1
1, 12
G = −
O , :
W A 2D , H
,
1 10 0 0 0 0 0
2 2
1 10 0 0 0 0 0
2 2
1 10 0 0 0 0 0
2 2
1 10 0 0 0 0 0
2 2
1 10 0 0 0 0 0
2 2
1 10 0 0 0 0 0
2 2
1 10 0 0 0 0 0
2 2
1 10 0 0 0 0 0
2 2
N
H W
G
= =
− − − −
I 44 . T .
T FIR DSP MACP .
T , , 4 ,
, , ,
. T (
), , , . B
.
T
N N T W AW =
First half: Applying 1D
Transformation to Rows of Image
Second half: Applying 1D
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T , . L
. T
:
1
N
T
N A W TW
− −=% ( )
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A 6: BIOMETRIC AUTHENTICATION
T . T
:
• S , PIN
• S , ATM
• S , . T
T , ,
, , B.
A B
,
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T :
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T .
1> E I
.
2> T G,
. C,
. T
. T ,
. C .
S .
F . I ,
. N . I
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A 7. C BA A A
C (CBIR), (QBIC)
(CBVIR)
, , . (
[1]
CBIR ). C ( ).
"C"
, , / . T ''
, , ,
. CBIR
. A
,
. T
.
CBIR ,
( ),
.
I, CBIR , . T,
, T
D S ( ).
A CBIR , . T,
.
T CBIR :
W W
W CBIR
H
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3.
D ,
. I ,
. T
(.. , ). T
.
4.
T
. I
. S
, .
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Application 9. Colour Image Smoothing And Sharpening
T . I
, .
A M ( ):
F = ('', [7, 7], 5)
7 7 , 5.
T
.
U , . T '':
F = ('');
(2,2,1), (), ('O P S');
= (, F, '');
(2,2,2), (), ('S P');
M = (, F, '');
(2,2,3), (M), ('E ');
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A 10.
,
F: W E S.
T D W:
•
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• :
• :
• :
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ACA AA
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.
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L ,
.
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.
CAACC AA
• : .
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W
E
W
E W
W
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• : A . A . M,
.
• : A
. A . T
.
B CBC
I , RGB
YCC.
T X YCC .
CC
Y 0.29 0.58 0.11 R
C = 0.16 0.33 0.50 G
C 0.50 0.41 0.81 B
T Y . T C C .
T 4:2:2 4:1:1 .
D :
.
S S T .
• B (B): T LSB . G ,
8 , (.., ), ,
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; , . F , LSB, .
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. T ,
, ,
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.
C , . T
. T
C (C), (),
(), D L T (DLT) D H T (DHT).
T
(HVS) . F , HVS
, . I ,
,
. O ,
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; , , ,
. T ,
.
• C (C):CT F T,
. T ,
.
DCT . S
,
, . H,
. A
, , . DCT G DCT
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,
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T . W DWT
. T 2D (DWT)
, 3 1 . T ;
1/4 . T 2D DWT 1D DWT . T DWT (LL)
(HL), (LH) (HH) . T
( )
/ () . T
. T
, (LH, HL, HH).
E ,
. T DWT
.
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Application 11.
I ,
( , ). T /
.I (, , .) .
M ,
.
T ,
. E
, , , .
A .
W , M (Medical imaging is the technique and
process used to create images of the human body (or parts and function thereof) for clinical purposes) ,
3D
M .
1.
A CT .
C . F ,
R ,
.
2. C
T .
I .
L ,
, , . T ,
, .
L
( )
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. T .
F S : C () O I, C () S .
3. :
PCX BMP, TGA,TIFF
DPCM P C
A LZW GIF TIFF
PNG, MNG, TIFF
C
4. :
. T
. E
. T .
C . T ,
.
. T . A F DCT
, .
F
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A 12.
• B ( , ) ( S J K) (, ) ( M N)
• C ( , ) ( )
• (, ) = ∑ ∑ (, ) . ( +, + )
o F = 0, 1, 2, . . M1o =0, 1, 2, . . .N1
• S
• T
• A (0, 0) A , .• (, )
• T W .
A
T
I ( , )
T
W = 0, 1, 2, . . M1
=0, 1, 2, . . .N1
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C ,
T γ (, ) 1 +1
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A 13.
. A , ,
. M,
.
C ,
. O ,
, .
F ,
(
,
).
T ,
, (
),
.
C C
H BOK BOK RLE B OK LZ G B
A C
G .F: GZIP, BZIP, BOA.
A: PKZIP.
F : NTFS.
M.
I: GIF, JPEG, CD.
S: MP3.
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V: MPEG, DX, HDTV.
C.
ITUT T4 G 3 F.
V.42 .
D.
G
E . R , '
3.
AAAABBBAABBBBBCCCCCCCCDABCBAAABBBBCCCD
4A3BAA5B8CDABCB3A4B3CD
A: . R 0 1, . "F "
. A: B , _JPEG (J P E G).
. !
V
A:
C
1.
2.
3.
4. 2 3 . I
(64 )
R K K K K K K KK K K R R K K K
K K R R R R G G
K K B C C C R R
G G G M C B R R
B B B M Y B B R
G G G G G G G R
G R R R R G R R
C H
=================================R 19 00
K 17 01
G 14 10
B 7 110
C 4 1110
M 2 11110
Y 1 11111
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A 14. AAC B A C
A
. T
, . T
.
ANPR ,
. S
. ANPR ,
.
:
1. P .
2. P .
3. N .
4. C .
5. O .
6. S/G .
T .
D (),
. A
.
1. T
CCTV . A , A
.
2. O ;
. A ,
. T ,
. A
.
3. T . A
. A
. C
. F C .
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A 15. C
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Application 16. Handwritten And Printed Character Recognition
1. C
H
, , . T
" " ( ) . A,
" ", .
H . H,
,
.
C
O .
T . T
[1] , . T
. T . Y
.
C
A
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.
N . T
. E
. I . N
; ,
.
F ,
.
S :
• A R
• P
• P
• N • A
• I
• I T . Y
.
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O
PDA, / .
T .
T
.
T :
• .
• , , , .
• ,
.
2. C :
T
.
• C ( ) : () (
)
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C C
T
. T
, .
T
. T . A
: , , ().
I, . I ,
. I C .
I , . H,
.T O , , . A
. T
.
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C
I , . H,
,
T :
● P ( ).
● T .
● T "."
● E , .● T . S ( ).
● T, . I , . O
, .