%zad1
%clear all;
f=imread('11.bmp');
c = rgb2gray(f);
%th = 100;
%d = c<th;
%e=imhist(c);
%bar(e);
%otsu = graythresh(f);
%imshow(otsu);

%zad2
%a=cv.cvtColor(f, 'RGB2XYZ');
%imshowpair(f,a, 'montage');
%IZ = a(:,:,3);
%figure;
%imshow(IZ);

%d = c<100;
%e = c<90;
%imshowpair(d,e, 'montage');
%wynik=bitxor(d,e);
%figure;
%imshow(wynik);
%suma=sum(wynik(:));

%zad3
%Mean_Method = cv.adaptiveThreshold(c, 'MaxValue', 255, 'Method', 'Mean', 'Type', 'Binary','BlockSize', 3, 'C',2);
%Gaussian_Method = cv.adaptiveThreshold(c, 'MaxValue', 255, 'Method', 'Gaussian', 'Type', 'Binary', 'BlockSize', 3, 'C',2);
%figure;
%imshowpair(Mean_Method,Gaussian_Method, 'montage')
%wynik_zad3 = bitxor(Mean_Method, Gaussian_Method);
%figure;
%imshow(wynik_zad3);

%zad4
szumienie_solipieprz = imnoise(c, 'salt & pepper');
szumienie_gaussian = imnoise(c, 'gaussian');
imshowpair(szumienie_solipieprz, szumienie_gaussian, 'montage');
wynik_zad4 = bitxor(Mean_Method, Gaussian_Method);
figure;
imshow(wynik_zad4);