zigzag.m

来自「这是一个用MATLAB软件来实现的图像JPEG压缩程序源代码」· M 代码 · 共 16 行

function Z = Zigzag(S);
%Zigzag表
ZT=[0 ,1 ,5 ,6 ,14,15,27,28;
   2 ,4 ,7 ,13,16,26,29,42;
   3 ,8 ,12,17,25,30,41,43;
   9 ,11,18,24,31,40,44,53;
   10,19,23,32,39,45,52,54;
   20,22,33,38,46,51,55,60;
   21,34,37,47,50,56,59,61;
   35,36,48,49,57,58,62,63];
Z = zeros(1,64);
    for i = 1:8
        for j = 1:8
            Z(ZT(i,j)+1) = S(i,j);
        end
    end