psnr.m

来自「基于等均值等方差的图象矢量量化Matlab程序」· M 代码 · 共 18 行

fpho=im2double(sig);
fpho1=im2double(re_re_sig);
g0=255^2;
g1=0;
g2=0;
for i=1:512
    for j=1:512
        g1=g1+(fpho(i,j)-fpho1(i,j))^2;        
    end
end
for i=1:512
    for j=1:512
        g2=g2+fpho(i,j)^2;        
    end
end
MSE=(g1*255*255)/(512*512)
PSNR15=10*log10(g0/MSE)
SNR15=10*log10(g2/g1)