According to SVD technique A=U*S*V'. But when I apply SVD to my image, I am not able to retrieve my original image. Is that because S matrix is not taking the all the eigen values? Eventhough, I had to get a partially correct image?

4 vues (au cours des 30 derniers jours)
[u,s,v]=svd(a); ap=u*s; a=ap*v;

Réponse acceptée

Roger Stafford
Roger Stafford le 20 Fév 2018
Modifié(e) : Roger Stafford le 20 Fév 2018
You've left off the transpose operator at the last step:
ap*v';
It's a very small character, but it's all-important!
Round-off errors may cause tiny differences between your original a and the restored a. If the image pixels in the original a were all integers, just do a round on the result and that should restore it exactly.

Plus de réponses (0)

Catégories

En savoir plus sur Eigenvalues 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!

Translated by