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148 | function CiriOrdeDua(Citra)
clc, clear all, warning off all; tic;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Read Image %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
[fname,pname] = uigetfile({'*.jpg';'*.bmp';'*.png';'*.tif';'*.ppm';},'Open Image');
gambar = imread([pname fname]);
figure (1);
imwrite(gambar, 'Gambar Asli.jpg');
imshow(gambar);
title('Gambar Asli');
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Cropping Gambar %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
crop = imcrop(gambar,[2091.5 1371.5 978 852]);
figure (2);
imwrite(crop, 'Cropping Gambar.jpg');
imshow(crop);
title('Cropping Gambar');
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Resize Gambar %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
resize = imresize (crop,[256 256]);
figure (3);
imwrite(resize, 'Resize Citra.jpg');
imshow(resize);
title('Resize Citra');
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% Grayscale Gambar %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
grayscale = rgb2gray(resize); %proses Grayscaling
figure (4);
imwrite(grayscale, 'Citra Keabuan.jpg');
imshow(grayscale);
title('Citra Keabuan');
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% GLCM %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
Citra=grayscale;
mk000=ko000(Citra);
mk045=ko045(Citra);
mk090=ko090(Citra);
mk135=ko135(Citra);
MatKook=(mk000+mk045+mk090+mk135)/4;
I=[1:256];
SumX=sum(MatKook); SumY=sum(MatKook');
MeanX=SumX*I'; MeanY=SumY*I';
StdX=sqrt((I-MeanX).^2*SumX');
StdY=sqrt((I-MeanY).^2*SumY');
CiriASM=sum(sum(MatKook.^2));
CiriCON=0;CiriCOR=0;CiriVAR=0;CiriIDM=0;CiriENT=0;
for i=1:256
for j=1:256
TempCON = (i-j)*(i-j)*MatKook(i,j);
TempCOR = (i)*(j)*MatKook(i,j);
TempVAR = (i-MeanX)*(j-MeanY)*MatKook(i,j);
TempIDM = (MatKook(i,j))/(1+(i-j)*(i-j));
TempENT = -(MatKook(i,j))*(log2(MatKook(i,j)+eps));
CiriCON = CiriCON + TempCON;
CiriCOR = CiriCOR + TempCOR;
CiriVAR = CiriVAR + TempVAR;
CiriIDM = CiriIDM + TempIDM;
CiriENT = CiriENT + TempENT;
end
end
CiriCOR=(CiriCOR-MeanX*MeanY)/(StdX*StdY);
fprintf('\n\tANGULAR SECOND MOMENTS :%13.4f\n',CiriASM);
fprintf('\n\tCONTRAST :%13.4f\n',CiriCON);
fprintf('\n\tCORRELATION :%13.4f\n',CiriCOR);
fprintf('\n\tVARIANCE :%13.4f\n',CiriVAR);
fprintf('\n\tINVERS DIFFERENCE MATRIX :%13.4f\n',CiriIDM);
fprintf('\n\tENTROPY :%13.4f\n',CiriENT);
%ko000.m - MATRIKS KOOKURENSI ARAH 0 DERAJAT
function MatriksHasil=ko000(GambarAsli)
GambarAsli=double(GambarAsli);
Temp=zeros(256);
[tinggi,lebar]=size(GambarAsli);
for i=1:tinggi
for j=1:lebar-1
p=GambarAsli(i,j)+1;
q=GambarAsli(i,j+1)+1;
Temp(p,q) = Temp(p,q)+1 ;
Temp(q,p) = Temp(q,p)+1 ;
end
end
Jumlahpixel=sum(sum(Temp));
MatriksHasil=Temp/Jumlahpixel;
%ko045.m - MATRIKS KOOKURENSI ARAH 45 DERAJAT
function MatriksHasil=ko045(GambarAsli)
GambarAsli=double(GambarAsli);
Temp=zeros(256);
[tinggi,lebar]=size(GambarAsli);
for i=2:tinggi
for j=1:lebar-1
p=GambarAsli(i,j)+1;
q=GambarAsli(i-1,j+1)+1;
Temp(p,q) = Temp(p,q)+1;
Temp(q,p) = Temp(q,p)+1;
end
end
Jumlahpixel=sum(sum(Temp));
MatriksHasil=Temp/Jumlahpixel;
%ko090.m - MATRIKS KOOKURENSI ARAH 90 DERAJAT
function MatriksHasil=ko090(GambarAsli)
GambarAsli=double(GambarAsli);
Temp=zeros(256);
[tinggi,lebar]=size(GambarAsli);
for i=2:tinggi
for j=1:lebar
p=GambarAsli(i,j)+1;
q=GambarAsli(i-1,j)+1;
Temp(p,q) = Temp(p,q)+1 ;
Temp(q,p) = Temp(q,p)+1 ;
end
end
Jumlahpixel=sum(sum(Temp));
MatriksHasil=Temp/Jumlahpixel;
%ko135.m - MATRIKS KOOKURENSI ARAH 135 DERAJAT
function MatriksHasil=ko135(GambarAsli)
GambarAsli=double(GambarAsli);
Temp=zeros(256);
[tinggi,lebar]=size(GambarAsli);
for i=2:tinggi
for j=2:lebar
p=GambarAsli(i,j)+1;
q=GambarAsli(i-1,j-1)+1;
Temp(p,q) = Temp(p,q)+1 ;
Temp(q,p) = Temp(q,p)+1 ;
end
end
Jumlahpixel=sum(sum(Temp));
MatriksHasil=Temp/Jumlahpixel;
toc;
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