dithering.m

clear;
clc;

img = imread("images/baboon.jpg");
img = rgb2gray(img);

[img_height, img_width] = size(img);


d1 = [
	0 128;
	192 64
];

d2 = [
	0 128 32 160;
	192 64 224 96;
	48 176 16 144;
	240 112 208 80
];

% Membuat matriks threshold yang ukurannya sama dengan matriks citra
threshold_img_d1 = repmat(d1, round(img_width/2), round(img_height/2));
threshold_img_d2 = repmat(d2, round(img_width/4), round(img_height/4));

% Melakukan dithering citra dengan membandingkan matriks citra dgn matriks threshold
dith_img_d1 = img > threshold_img_d1;
dith_img_d2 = img > threshold_img_d2;

% Plotting
subplot(1,3,1), imshow(img);
title("Citra Original");

subplot(1,3,2), imshow(dith_img_d1);
title("Hasil Dithering dengan D1");

subplot(1,3,3), imshow(dith_img_d2);
title("Hasil Dithering dengan D2");

%imwrite(img, "original.jpg");
%imwrite(dith_img_d1, "dith1.jpg");
%imwrite(dith_img_d2, "dith2.jpg");