clear all;
close all;

p = imread("Tygrys.bmp");
I = cv.cvtColor(p,'RGB2XYZ');
IZ = I(:,:,2);
th = graythresh(IZ) * 255;
B = IZ < th;
imshow(B);
IG = cv.cvtColor(p,'RGB2GRAY');
th = graythresh(IG) * 255;
C = IG < th;

figure;
imshow(C);

D = bitxor(B,C);
figure;
imshow(D);

sum(D(:));
IMGmean = cv.adaptiveThreshold(IG);
IMGgaussian = cv.adaptiveThreshold(IG, 'Method', 'Gaussian');

figure;
imshow(IMGmean);
figure;
imshow(IMGgaussian);

IMGNgaussian = imnoise(IG, 'gaussian');