antiquantifier.asv

来自「EZW的matlab程序 基于小波变换对图像进行压缩编码的研究」· ASV 代码 · 共 18 行

function [quantifierMat,threshold,rIlist,quantiflagOld]=antiquantifier(T1,level,rIlist,quantiflag,quantiflagOld)
quantifierMat=[];
maxInterValue=2*T1;
threshold=T1/2^(level-1);
intervalNum=maxInterValue/threshold-1;
for i=1:intervalNum
    quantifierMat=[quantifierMat;threshold*i threshold*(i+0.5) threshold*(i+1) threshold*(i+0.25) threshold*(i+0.75)];
end

rIlen=length(rIlist);
flaglen=length(quantiflag);
for r=1:rIlen
    rIlist(r)=2*rIlist(r)+quantiflagOld(r);
end
for f=rIlen+1:flaglen
    rIlist(f)=1;
end
quantiflagOld=quantiflag;