reshape matlab To RESHAPE the number of elements must not ch

使用imread读取到的图片的数据是一个三维的矩阵.你把它当做二维来处理是错误的!所以出错了!
再问： 那怎么弄啊？
再答： tupian='F:\matlab\tupian\green.bmp' Message_a=double(imread(tupian)); N1=size(Message_a,1); N2=size(Message_a,2); N3=size(Message_a,3); n=N1*N2*N3; Message=round(reshape(Message_a,1,n)./256); 或者 tupian='F:\matlab\tupian\green.bmp' Message_a=double(imread(tupian)); Message=round(Message_a(:)/256);