function g = apply_point_transform(f,T)
% Function to apply the transformation in T to the image f

[nr nc] = size(f);
g = zeros(nr,nc);

% Loop over all the pixels 
for idx1 = 1:nr
  for idx2 = 1:nc
    % Pull out the gray level from f
    r = f(idx1,idx2);
    %Index into T to find the new gray level
    s = T(r+1);
    % Load the new gray level into the output image g
    g(idx1,idx2) = s;
  end
end