function?P?=?block_divide（IK）
%?P=block_divede（I）
%?[rowcol]=size（I）row%K==0?and?col%K==0
%?divide?matrix?I?into?K*K?blockand?reshape?to?
%?a?K^2*N?matrix
%?example:
%?I=imread（‘lena.jpg‘）;
%?P=block_divide（I4）;

%?計算塊的個數：R*C個
[rowcol]=size（I）;
R=row/K;
C=col/K;

%?預分配空間
P=zeros（K*KR*C）;?????
for?i=1:R
????for?j=1:C
????????%?依次取K*K?圖像塊
????????I2=I（（i-1）*K+1:i*K（j-1）*K+1:j*K）;
????????%?將K*K塊變為列向量
????????i3=reshape（I2K*K1）;
????????%?將列向量放入矩陣
????????P（:（i-1）*R+j）=i3;
????end
end

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????559??2012-10-25?09:58??BP神經網絡實現圖像壓縮\block_divide.m

?????文件???????1061??2014-05-16?11:58??BP神經網絡實現圖像壓縮\bp_imageCompress.m

?????文件????????820??2014-05-16?00:06??BP神經網絡實現圖像壓縮\bp_imageRecon.m

?????文件??????18332??2014-05-16?11:58??BP神經網絡實現圖像壓縮\comp.mat

?????文件??????66614??2012-11-19?22:44??BP神經網絡實現圖像壓縮\lena.bmp

?????文件????????391??2012-10-25?10:01??BP神經網絡實現圖像壓縮\re_divide.m

?????目錄??????????0??2013-02-22?11:00??BP神經網絡實現圖像壓縮

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????????????????87777????????????????????7