How this PCA code written here .can someone plz explain.
2 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
Im adding this PCA function into DWTPCAv code but i dont undrstand what is happening with this code.here ca is the dwt coefficient plzz help
[ca{i},ch{i},cv{i},cd{i}] = dwt2(a{i},'db3');
[fca m1]=fuse_pcaany(ca,n);
function [y1 a1] = fuse_pcaany(ca,n)
for i=1:1:n
M(:,i)=ca{i}(:);
end
[V, D] = eig(cov(M));
[z1 s1] = size(D);
for i=1:1:s1
D1(i)=D(i,i);
end
D2=max(D1(i));
for i=1:1:s1
if D1(i)==D2;
a1 = V(:,i)./sum(V(:,i));
end
end
[z2 s2]=size(ca{1});
% and fuse
y1=zeros(z2,s2);
for i=1:1:n
y = a1(i)*ca{i};
y1=y1+y;
end
0 commentaires
Réponses (0)
Voir également
Catégories
En savoir plus sur Dimensionality Reduction and Feature Extraction dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!