Image Degradation and Restoration Model

7/23/2019 Image Degradation and Restoration Model

1/8

Bncoj Treajssbgo .Mjorcmctbeg Cgm

Vjsetrctbeg Nemjh

Tb32=4=

Ljfrucry 1 6431


2/8

Aegtjgts

Aegtjgts

B n c o j T r e a j s s b g o . M j o r c m c t b e g C g m V j s e t r c t b e g N e m j h 1

4'3 Bgtremuatbeg ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' '1

4'6 Mjorcmctbeg Nemjh ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' '1

4'1 Vjsterctbeg Nemjh ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' '=

4'= Qenj Zsjluh Cgchysbs ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' ' '=

4'='3 Vcgmen Treajss Tcssbgo ]`reuo` H]B systjn ' ' ' '=

4'='6 Lrjqujgay mencbg mjsarbptbeg el Vcgmen preajss ' :4'='1 Vjhctbeg fjtwjjg bgput cgm eutput ' ' ' ' ' ' ' ' ' '


3/8

Bncoj Treajssbgo . Mjorcmctbeg Cgm Vjsetrctbeg Nemjh

Bncoj Treajssbgo . MjorcmctbegCgm Vjsetrctbeg Nemjh

4'3 BgtremuatbegBg t`j meaunjgt wj sjt up nemjh%lrcnjweri te mjsarbfj cgmrjprjsjgt èw bncoj ugmjroejs mbstertbegs%mjorcmctbegs cgm èw

te rjaevjr t`j erbobgch bncoj lren mjorcmjm bncoj'

4'6 Mjorcmctbeg Nemjh

Aegsbmjr cg bncojl ( x 9 y "

'Hjt t`j bncoj ugmjroe senj mjorcmctbeg'cgm rjsuhtcgt bncoj fj mjsarbfjm fy

o ( x 9 y "

'

]`j mjorcmctbeg ncy fj el lern el netbeg fhurrbgoeut el leauseptbas hbo`t sacttjrbgo jta'

]`j Mjorcmctbeg preajss bs nemjhhjm hbgjcr lbhtjr `( x 9 y "

cgm `( x 9 y "

acg fj achhjm cs mjorcmctbeg lbhtjr%epjrcter'

Gebsj bs nemjhhjm cs cmmbtbvj gebsj cgm bs cmmjm te eutput elmjorcmctbeg lbhtjr'

Gebsj aeuhm chse `cvj fjjg cmmjm ct t`j bgput el mjorcmctbeglbhtjr ' Qbgaj wj crj weribgo wbt` hbgjcr lbhtjr t`j gebsj tjrn wbhhfj cmmbtbvj ct t`j eutput el t`j lbhtjr'

Gebsj bs nemjhhjm cs scnphj lugatbeg el rcgmen preajss' Ct t`jeutput el t`j lbhtjr gebsj preajss ncbgtcbgs bts lern '

]ùs gebsj bg mbrjathy bgahumjm ct t`j eutput el t`j mjormc.tbeg lbhtjr'

]`j mjorcmjm cgm gebsy bncoj bs rjprjsjgtjm fyo ( x 9 y "

'

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4/8


4'1 Vjsterctbeg Nemjh]`j efkjatbvj bs te lbgm t`j jstbnctj el erobgch bncoj

l ( x 9 y "

' ]`bsbs mjgetjm fy

l r ( x 9 y "'

]`j mjorcmjm bncojo ( x 9 y "

bs pcssjm t`reuo` t`j rjsterctbeg lbhtjrh ( x 9 y "

w`ba` premuajs t`j jstbnctj el erbobgch sbogchl r ( x 9 y "

'

]`j rjsterctbeg lbhtjr bs mjsbogjm fcsjm eg t`j igewhjmoj cfeutt`j mjorcmctbeg nemjh cgm gebsj nemjh'

]`j jrrer bg jstbnctbeg wbhh fj rjmuajm t`j nerj caaurctjhy wjigew cfeut t`j mjorcmctbeg cgm gebsj er bl cssunjm mjorcmctbeg

cgm gebsj nemjh lbts t`j catuch sajgcrbe fjttjr'

(c" Mjorctbeg cgm Vjsterctbeg Nemjh

4'= Qenj Zsjluh Cgchysbs

4'='3 Vcgmen Treajss Tcssbgo ]`reuo` H]B systjn

Aegsbmjr c H]B lbhtjr` ( t "

'Hjt bgput el H]B systjn fj nemjhhjm cs

_bmj sjgsj.stctbegcry stea`cstba preajss P(t"'_QQ preajss bs aenphjtjhy a`crcatjrbzjm fy bts njcg cgm cute.aerrjhctbegs lugatbeg'

Hjt P(t" fj c wbmj sjgsj stctbegcry preajss cpphbjm ct t`j bgputel H]B lbhtjr'

]`j njcg el preajss P(t" bs mjlbgjm cs jxpjatctbeg el rcgmen

= | 0


5/8


vcrbcfhj eftcbgjm fy efsjrvbgo t`j preajss ct senj tbnj ]'

x

( t " > J Y P ( t " ^

]`j Cute.aerrjhctbeg lugatbeg el rcgmen preajssP ( t "

bs mjlbgjm csjxpjatctbeg el premuat el rcgmen vcrbcfhjsP ( t

3

"

P ( t

6

"eftcbgjm fy

efsjrvbgo t`j rcgmen preajss ct tbnjst

3

cgmt

6

cgm mjpjgms eghyeg t`j tbnj mblljrjgaj fjtwjjg efsjrvctbeg tbnjs

t

3

cgmt

6

V

x

( t

3

9 t

6

" > J Y P ( t

3

" P ( t

6

" ^ > V

x

( t

3

t

6

"

Hjt t`j rcgmen preajss bs trcgsnbttjm t`reuo` H]B lbhtjr' ]`jeutput R(t" bs oevjrgjm fy aegvehutbeg epjrctbegs'

]`j eutput el H]B lbhtjr bs obvjg fy

R ( t " >

[

` ( " P ( t " m t

]`j eutputR ( t "

bs chse c _QQ rcgmen preajss a`crcatjrbzjm fy btsnjcg cgm cuteaerrjhctbeg'

]`j njcg cgm cute.aerrjhctbeg elR ( t "

bs rjhctjm teP ( t "

y

( t " >

x

@ ( 4 "

w`jrj@ ( 4 "

bs t`j zjre lrjqujgay MA rjspegsj el t`j systjn'

]`j njcg el rcgmen preajssR ( t "

premuajm ct t`j eutput elH]B systjn bg rjspegsj te

P ( t "catbgo cs bgput preajss bs jquch te

t`j njcg elP ( t "

nuhtbphbjm fy t`j MA rjspegsj el t`j systjn'

]`j cuteaerrjhctbeg el t`j eutput preajss bs rjhctjm te bgput

preajss cs lehhews

V

y

( " >

[ [

` (

3

" ` (

6

" V

x

(

3

)

6

" m

3

m

6

4'='6 Lrjqujgay mencbg mjsarbptbeg el Vcgmen preajss

]`j lrjqujgay mencbg mjsarbptbeg el rcgmen preajss bs mjlbgjmusbgo pewjr spjatrch mjgsbty' Tewjr spjatrch mjgsbty bs mjlbgjm cst`j leurbjr trcgslern el cute.aerrjhctbeg lugatbeg'

: | 0


6/8


Aegsbmjr t`j bgput rcgmen preajssP ( t "

HjtQ

x

( l "mjlbgj bts

TQM'

]`j bgput rcgmen preajss bs pcssjm t`reuo` c H]B lbhtjr']`j TQM elt`j eutput preajss bs rjhctjm te TQM el bgput preajss cs lehhews'

Q

y

( l " > k @ ( l " k

6

Q

x

( l "

4'='1 Vjhctbeg fjtwjjg bgput cgm eutput

Gew wj `cvj twe rcgmen preajssjsP ( t "

cgmR ( t "

' Vjhctbeg fjtwjjgt`j twe rcgmen preajss acg fj mjlbgjm usbgo aress aerrjhctbeg cgmaress.spjatrch mjgsbty'

V

x y

( t 9 u " > J Y P ( t " R ( u " ^

V

x y

( " > V

y x

( "

Bt bs t`j jxpjatjm vchujs el premuat el rcgmen vcrbcfhj P cgm R

efsjrvjm ct efsjrvctbeg tbnjs t cgm u'

Q

x y

( l " > Q

y x

( l " > Q

x y

( l "

Bl t`j stctbegcry rcgmen preajssjs crj ugaerrjhctjm t`jg aressaerrjhctbeg bs zjre'

4'='= Qenj Nerj Zsjluh cgchysbs

Q

o o

( w

x

9 w

y

" > k @ ( w

x

9 w

y

" k

6

Q

l l

( w

x

9 w

y

"

Q

l o

( w

x

9 w

y

" > @

( w

x

9 w

y

" Q

l l

( w

x

9 w

y

"

< | 0


7/8


Q

o l

( w

x

9 w

y

" > @ ( w

x

9 w

y

" Q

l l

( w

x

9 w

y

"

Q

o o

( w

x

9 w

y

" > k @ ( w

x

9 w

y

" k

6

Q

l l

( w

x

9 w

y

" ) Q

g g

( w

x

9 w

y

"

? | 0


8/8

Fbfhbeorcp`y

Fbfhbeorcp`yY 3 ^ C m m b g o Q c h t c g m T j p p j r G e b s j t e B n c o j '

u r h

; ` t t p ; % % c g o j h k e ` g s y ' f h e o s p e t '

b g % 6 4 3 3 % 3 4 % c m m . s c h t . c g m . p j p p j r . g e b s j . t e . b n c o j ' ` t n h '

Y 6 ^ V c l c j h A ' O e g z c h j z c g m V b a ` c r m J ' _ e e m s ' M b o b t c h B n c o j T r e a j s s b g o ( 1 r m J m b t b e g " '

Z p p j r Q c m m h j V b v j r ( G K ( Z Q C ; T r j g t b a j . @ c h h ( B g a ' ( 6 4 4 < ' b s f g

; 4 3 1 3 < 0 ? 6 0 P '

Y 1 ^ Q b n e g @ c y i b g ' A e n n u g b a c t b e g Q y s t j n s ' : t ` ' _ b h j y T u f h b s ` b g o ( 6 4 4 2 ' b s f g

; 4 = ? 3 < 2 ? 2 4 ? (

2 ? 0 4 = ? 3 < 2 ? 2 4 2 '

Y = ^ G u n j r b a c h ] e u r e l Q b o g c h T r e a j s s b g o 'u r h

; ` t t p ; % % w w w ' n c t ` w e r i s ' b g %

n c t h c f a j g t r c h % l b h j j x a ` c g o j % 2 : : = . c . g u n j r b a c h . t e u r . e l . s b o g c h .

p r e a j s s b g o '

Y : ^ _ b i b p j m b c 'u r h

; ` t t p ; % % j g ' w b i b p j m b c ' e r o % w b i b % B n c o j U g e b s j '

0 | 0
http://en.wikipedia.org/wiki/Image_noisehttp://www.mathworks.in/matlabcentral/fileexchange/9554-a-numerical-tour-of-signal-processinghttp://www.mathworks.in/matlabcentral/fileexchange/9554-a-numerical-tour-of-signal-processinghttp://www.mathworks.in/matlabcentral/fileexchange/9554-a-numerical-tour-of-signal-processinghttp://angeljohnsy.blogspot.in/2011/10/add-salt-and-pepper-noise-to-image.htmlhttp://angeljohnsy.blogspot.in/2011/10/add-salt-and-pepper-noise-to-image.html

Image Degradation and Restoration Model

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