求程序解释

[冰山之客]

SCALE=8;
[M,N,K]=size(dh);
dh1=dh(1:SCALE:M,1:SCALE:N,1:3);
I=rgb2gray(dh1);



dh1=dh(1:SCALE:M,1:SCALE:N,1:3);这一步做什么 什么意思:)

[yhcode]

dh1存放对dh下采样(8下采样)的结果。1:2:5 = [1 1+2 1+2+2] = [1 3 5] 看看MATLAB的冒号操作