obraz1 = imread('1.jpg');                         % Colour Image
obraz11 = rgb2gray(obraz1);                       % Grayscale Image
x = 0:size(obraz11,2)-1;
y = 0:size(obraz11,1)-1;
[X,Y] = meshgrid(x,y);
figure(1)
meshc(X, Y, obraz11)                              % Mesh Plot
grid on
xlabel('X')
ylabel('Y')
zlabel('Intensity')
colormap jet