gusucode.com > 《MATLAB图像与视频处理实用案例详解》代码 > 《MATLAB图像与视频处理实用案例详解》代码/第 15 章 基于小波的图像压缩技术/idwt_process.m
function y = idwt_process(ya, yd, lf, hf) alen = length(ya); dlen = length(yd); while dlen - alen >= 0 yai = upsample_prcoess(ya); yai = conv(yai, lf); ydi = yd(dlen-alen+1:dlen); ydi = upsample_prcoess(ydi); ydi = conv(ydi, hf); ya = yai + ydi; yd = yd(1:dlen-alen); alen = length(ya); dlen = length(yd); end y = ya;