% name of the file that contains the image
filename = 'depth_im1.png';

% load the image into the matrix X
X = imread(filename);

% display the image
figure;
imshow(X);

% display the image as a mesh
figure;
mesh(double(X));
axis equal;

% display the image as a surface
figure;
surf(double(X));
axis equal;

% display the image as a shaded surface
figure;
surfl(double(X));
axis equal;
colormap pink;
shading interp;
