seinzumtode https://blog.hatena.ne.jp/seinzumtode/ how to code something https://seinzumtode.hatenadiary.jp/ 画像処理 MATLAB DCT-IIの定義式 ただし function show_dct_basis clear; close all; m = 8; N = m*m; function F=getBasisF(u,v) F = zeros(m,m); for y=0:m-1 for x=0:m-1 F(y+1,x+1) = sqrt(2/m) * calcC(u)*calcC(v) ... * cos(((2*x+1)*u*pi)/(2*m)) ... * cos(((2*y+1)*v*pi)/(2*m)); end end end function C=calcC(k) if k==0 C=1/sqrt(2); … 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fseinzumtode.hatenadiary.jp%2Fentry%2F20171123%2F1511468787" title="２次元DCT（離散コサイン変換）の基底 - how to code something" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> https://cdn-ak.f.st-hatena.com/images/fotolife/s/seinzumtode/20171124/20171124052614.png Hatena Blog https://hatena.blog 2017-11-23 05:26:27 rich https://seinzumtode.hatenadiary.jp/entry/20171123/1511468787 1.0 100%