function [ img_out ] = argb( )
%ARGB Summary of this function goes here
%   Detailed explanation goes here

[datei,pfad] = uigetfile('*.png','Bild auswählen');

curdir = pwd;
cd(pfad)
img = imrotate(imread(datei),180);
cd(curdir);

img_size = size(img);
img_farbe = img;
for m = 1:img_size(1)
    for n =1:img_size(2)
        img_farbe(m,n,1) = 244;
        img_farbe(m,n,2) = 111;
        img_farbe(m,n,3) = 9;
    end
end
img_maske = zeros(img_size(1),img_size(2));
for o = 300:600
    for p = 500:700
        img_maske(o,p)= 0.5;
    end
end
% img_maske = im2uint8(img_maske);

img_out = img;
for q = 1:img_size(1)
    for r = 1:img_size(2)
       alpha = img_maske(q,r); 
       img_out(q,r,1) = (alpha * img_farbe(q,r,1)) + ((1-alpha) * img(q,r,1));
       img_out(q,r,2) = (alpha * img_farbe(q,r,2)) + ((1-alpha) * img(q,r,2));
       img_out(q,r,3) = (alpha * img_farbe(q,r,3)) + ((1-alpha) * img(q,r,3));
    end
end

end