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8/14/2019 Báo cáo xly

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GVHD: VÕ TRUNG DŨNG

Thành viên nhm :

H! tên: "##V:

N$%&'n ()n$ B*nh +,---...

N$%&'n Vi/t (01n$ +,---23+

N$%&'n Thành N$%&ên +,--.44

T5 6ê Hoàn$ #7n +,--

N$%&'n V8n Thi9n +,--

; tài ,<: =ma$> t?an@Ao?m



; tài ,<:

=ma$> T?an@Ao?m: ?>aC an o?i$inal ima$> nam>C l>na,.4tiA AinC th> Eo%?i>? t?an@Ao?m oA th> ima$>4 Hint: %@> AAt@hiAt anC AAt.F lot th> lo$ ma$nit%C> oA th> .D DET oA th> $?a&@cal> ima$> Iith c>nt>? @hiAt>C4 C>@i$n anC al& th> t?%ncation IinCoI@ Ci@c%@@>C in th> cla@@ to J>> .K,.4K anC L4.K oA th> DET co>AAici>nt@4 al& th> .D inv>?@> DET to ?>con@t?%ct th> ima$> Ao? >ach oA th> t?%ncat>C@>ct?a4 lot th> ?>con@t?%ct>C ima$>@4 com%t> th> M#NR val%> Ao? >ach oA th> ?>con@t?%ct>C ima$>@4



(oC> cho toàn ài:

function baitaplon_xu_ly_anh

%%%%%%%% nhap anh va FFTI = imread('C:\!er!\"I#$\e!&top\lena)*tif'+,

im!ho-(I+, fi.ure, FF = fft)(I+,

ima.e!c(//0lo.(1ab!(FF+++, colormap(.ray+, fi.ure, ima.e!c(an.le(FF++, colormap(.ray+, fi.ure,

%%%%%%%%%%%%%%%%%%%%%%%%%%

ima.e!c(//0lo.(1ab!(fft!hift(FF++++, colormap(.ray+, fi.ure, ima.e!c(an.le(FF++, colormap(.ray+, fi.ure,

%%%%%%%%%%%%%%%%%%tao bo loc thon. thap cutoff = /*2, cutoff = /*2 l3y )% h4 !5 FT

%%%%%%%%%%%%% /*/6266 l3y )*% h4 !5 FT %%%%%%%%%%%%%% /*/726$$ l3y 8*)% h4 !5 FT

n = //////,if cutoff 9 / cutoff ; /*

error('cutoff fre<uency mu!t be bet-een / and /*'+, end if rem(n+ >= / n 9 error('n mu!t be an inte.er ;= '+, end ro-! = ), col! = ),

x = (one!(ro-!+ 0 ?:col!@ A (fix(col!B)+1++Bcol!, y = (?:ro-!@' 0 one!(col!+ A (fix(ro-!B)+1++Bro-!,

radiu! = !<rt(x*) 1 y*)+,

f = *B (*/ 1 (radiu! *B cutoff+*()0n++,

%%%%%%%%%%%%%%%%%%%%%%%%%%%% nhan tron. mien tan !o FFcen = fft!hift(FF+, FFf = FFcen *0 f,

%%%%%%%%%%%%%%%%%%%%%%%% ve lai pho !au &hi loc ima.e!c(//0lo.(1ab!(FFf+++, colormap(.ray+,



fi.ure, ima.e!c(an.le(FFf++, colormap(.ray+, fi.ure, %%%%%%%%%%%%%%%%%%%%% &hoi phuc anh

reFFf = fft!hift(FFf+,

D = ifft)(reFFf+, D = uint$(D+, im!ho-(D+ %%%%%%%%%tinh E#G = /, for i = dran.e(:)+ for H = dran.e(:)+ = 1 (I(iH+AD(iH++), end, end, = double(+,

J = B()0)+, KLi = )M, K = (KLi0KLi+BJ,

E#G = /0lo.(K+

?>aC an o?i$inal ima$> nam>C l>na,.4tiA



coC> :

I = imread('C:\!er!\"I#$\e!&top\lena)*tif'+, im!ho-(I+,

AinC th> Eo%?i>? t?an@Ao?m oA th> ima$>4(oC> :

FF = fft)(I+, ima.e!c(//0lo.(1ab!(FF+++, colormap(.ray+,

fi.ure, ima.e!c(an.le(FF++, colormap(.ray+,



lot th> lo$ ma$nit%C> oA th> .D DET oA th> $?a&@cal> ima$> Iith c>nt>? @hiAt>C4

(oC>:

ima.e!c(//0lo.(1ab!(fft!hift(FF++++, colormap(.ray+,

fi.ure, ima.e!c(an.le(FF++, colormap(.ray+, fi.ure,

C>@i$n anC al& th> t?%ncation IinCoI@ Ci@c%@@>C in th> cla@@ to J>> .K,.4K anC L4.K oA th> DET co>AAici>nt@4

(oC> :

cutoff = /*/726$$,%%%%%%%%% cutoff = /*2 l3y )% h4 !5 FT %%%%%%%%%%%%% /*/6266 l3y )*% h4 !5 FT %%%%%%%%%%%%%% /*/726$$ l3y 8*)% h4 !5 FT

n = //////,if cutoff 9 / cutoff ; /*

error('cutoff fre<uency mu!t be bet-een / and /*'+, end if rem(n+ >= / n 9 error('n mu!t be an inte.er ;= '+,

end ro-! = ),

col! = ),x = (one!(ro-!+ 0 ?:col!@ A (fix(col!B)+1++Bcol!,y = (?:ro-!@' 0 one!(col!+ A (fix(ro-!B)+1++Bro-!,radiu! = !<rt(x*) 1 y*)+,f = *B (*/ 1 (radiu! *B cutoff+*()0n++,im!ho-(f+



al& th> .D inv>?@> DET to ?>con@t?%ct th> ima$> Ao? >ach oA th> t?%ncat>C@>ct?a4 lot th> ?>con@t?%ct>C ima$>@4

com%t> th> M#NR val%> Ao? >ach oA th> ?>con@t?%ct>C ima$>@4

(oC>:%%%%%%%%%%%%%%%%%%%%%%%%%%%% nhan tron. mien tan !o

FFcen = fft!hift(FF+, FFf = FFcen *0 f,

%%%%%%%%%%%%%%%%%%%%%%%% ve lai pho !au &hi loc ima.e!c(//0lo.(1ab!(FFf+++, colormap(.ray+, fi.ure, ima.e!c(an.le(FFf++, colormap(.ray+, fi.ure, %%%%%%%%%%%%%%%%%%%%% &hoi phuc anh

reFFf = fft!hift(FFf+,

D = ifft)(reFFf+,

D = uint$(D+, im!ho-(D+

%%%%%%%%%tinh E#G = /, for i = dran.e(:)+ for H = dran.e(:)+

= 1 (I(iH+AD(iH++), end,

end, = double(+, J = B()0)+, KLi = )M, K = (KLi0KLi+BJ,

E#G = /0lo.(K+



M#NR O ,3<423<-

M#NR O ,3<423<-



M#NR O ,3<423<-

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