logeqim.m

来自「完整的独立分量分析(ICA)程序包,可以用来进行盲源分离」· M 代码 · 共 27 行

function Y = logeqim(X)

xmax = max(max(X));
xmin = min(min(X));
[N,M]=size(X);
tmpmean1=mean(X);
tmpstd1=std(X);
tmpvalue1=tmpstd1/tmpmean1;
for (k =1:N)
    for(j=1:M)
        if (xmin<=0)
           X(k,j)=X(k,j)-xmin+1;
        elseif (xmin>=0) & (xmin<1)
            X(k,j)=X(k,j)+1;
        else
            X(k,j)=X(k,j);
       end
    end
end
x1max = max(max(X));
x1min = min(min(X));


for (r=1:N)
    Y(r,:)=((log(X(r,:))-log(x1min))*255/(log(x1max)-log(x1min)));
end