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Erosi.m
52 lines (45 loc) · 1.16 KB
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Erosi.m
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% Inisialisasi
img = imread('c:/Gambar/harimau.jpg');
Grayscale = rgb2gray(img);
img2 = not(im2bw(Grayscale));
SE = [1 1 1;1 1 1;1 1 1];
% Operasi erosi
A = img2;
B = SE;
hotx = 1;
hoty = 1;
[ta, la]=size(A);
[tb, lb]=size(B);
Xb = [];
Yb = [];
jum_anggota = 0;
%Menentukan koordinat piksel bernilai 1 pada H
for baris = 1 : tb
for kolom = 1 : lb
if B(baris, kolom) == 1
jum_anggota = jum_anggota + 1;
Xb(jum_anggota) = -hotx + kolom;
Yb(jum_anggota) = -hoty + baris;
end
end
end
AB = ones(ta, la); % Beri nilai satu semua pada hasil erosi
% Memproses erosi
for baris = 1 : ta
for kolom = 1 : la
for indeks = 1 : jum_anggota
if A(baris, kolom) == 1
xpos = kolom + Xb(indeks);
ypos = baris + Xy(indeks);
if (xpos >= 1) && (xpos <= la) && ...
(ypos >= 1) && (ypos <= ta)
AB(ypos, xpos) = 0;
end
end
end
end
end
figure,
subplot(1,3,1), imshow(img), title('Citra Asli');
subplot(1,3,2), imshow(img2), title('Citra Biner');
subplot(1,3,3), imshow(AB), title('Operasi Erosi');