Tugas prak 5

Nama : Marlinni Nim : 0804105010051 Kelompok : 02

Tugas 5 pratikum pengolahan citra digital

Penapisan pada domain frekuensi

citraawal= double (imread('airplane.tiff')); % resize citra 128x128 piksel

citra = imresize (citraawal,[256 256]); citra = citra/max (max(citra));

[s1,s2] = size (citra); figure (1);

imshow (citra)

% transformasi fourier fourier = fft2 (citra); figure (2);

imshow (fourier)

diameter =500;

imshow (uint8 (ct*256))

% ukuran tapis dengan diameter 400 diameter =400;

diameter2 = diameter.*ones (s1,s2) ct = power (fourier,diameter); figure (3);

imshow (uint8 (ct*256))

% ukuran tapis dengan diameter 100 diameter =100;

diameter2 = diameter.*ones (s1,s2) ct = power (fourier,diameter); figure (3);

imshow (uint8 (ct*256))

% citra dikembalikan ke domain spasial kembali = ifft2 (fourier);

figure (8);