gusucode.com > BP神经网络实现图像压缩 > BP神经网络实现图像压缩/re_divide.m
function I=re_divide(P,col,K) % I=re_divide(P) % P: K^2*N matrix % example: % I=re_divide(P); % I=uint8(I*255); % imshow(I) % 计算大小 [~,N]=size(P); m=sqrt(N); % 将向量转为K*K矩阵 b44=[]; for k=1:N t=reshape(P(:,k),K,K); b44=[b44,t]; end % 重新排布K*K矩阵 I=[]; for k=1:m YYchonggou_ceshi1=b44(:,(k-1)*col+1:k*col); I=[I;YYchonggou_ceshi1]; end