% eecs 556, 2003, exam 2, problem 1
load hw7image;
s = hw7image;
w = 10*randn(size(hw7image));
y =  s + w;  % noisy measurement

s2 = conv2([1 1 1 1 1]'/5,s);
s2 = s2(3:end-2,:);
y2 = s2 + w;  % blurred and noisy measurement