程序：A=imread('C:\Documents and Settings\董正坤\桌面\2003huidu.jpg');
B=imread('C:\Documents and Settings\董正坤\桌面\2010huidu1.jpg');
[a,b]=size(A)
z = zeros(a,b);
sum = z;
s=z;
n=0;
m=0;
K=0;
l=0;
cells = z;
for i=1:a
    for j=1:b
        if A(i,j)>=127
           cells(i,j)=0;
          else
           cells(i,j)=1;
            n=n+1;
        end
    end
end
%////////////////////////////////////////////
[a1,b1]=size(B)
z1=zeros(a1,b1);
sum1=z1;
cells1=z1;
for i=1:a1
    for j=1:b1
        if B(i,j)>=127
           cells1(i,j)=0 ;
        else
           cells1(i,j)=1;
          l=1+l;
        end
    end
end
  fprintf('2003年图像的像素为：%d',n);
  fprintf('2010年图像的像素为：%d',l);