说明: function P = block_divide(I,K) % P=block_divede(I) % [row,col]=size(I),row%K==0, and col%K==0 % divide matrix I into K*K block,and reshape to % a K^2*N matrix % example: % I=imread('lena.jpg'); % P=block_divide(I,4); % 计算块的个数:R*C个 [row,col]=size(I);
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