How to calculate Multi Block DCT of an image where block size are 2x2; 4x4 and 8x8? Thanks

2 vues (au cours des 30 derniers jours)

Mohammad Manzurul Islam le 6 Fév 2018

0
Lien

Utiliser le lien direct vers cette question

https://fr.mathworks.com/matlabcentral/answers/380967-how-to-calculate-multi-block-dct-of-an-image-where-block-size-are-2x2-4x4-and-8x8-thanks

Commenté : Mohammad Manzurul Islam le 6 Fév 2018

Hi, I am trying to calculate MBDCT of a 2D gray image where block size is 2x2 or 4x4 or 8x8. I have used dct2 function before. But as far I understand, dct2 function calculates the entire image matrix. So can you please tell me how to code this? Thanks a lot for your kind guidance.

0 commentaires
Afficher -2 commentaires plus anciensMasquer -2 commentaires plus anciens

Connectez-vous pour commenter.

Connectez-vous pour répondre à cette question.

Réponses (1)

Abhishek Ballaney le 6 Fév 2018

0
Lien

Utiliser le lien direct vers cette réponse

https://fr.mathworks.com/matlabcentral/answers/380967-how-to-calculate-multi-block-dct-of-an-image-where-block-size-are-2x2-4x4-and-8x8-thanks#answer_303678

https://in.mathworks.com/help/images/ref/dct2.html

1 commentaire
Afficher -1 commentaires plus anciensMasquer -1 commentaires plus anciens

Mohammad Manzurul Islam le 6 Fév 2018

As i said, I need to apply dct on blocks of image. For example, the blocks may be 2x2 or 4x4 or any other block size. And image can be of any size.

Connectez-vous pour commenter.

Connectez-vous pour répondre à cette question.

Catégories

Image Processing and Computer Vision Image Processing Toolbox Image Filtering and Enhancement Neighborhood and Block Processing

En savoir plus sur Neighborhood and Block Processing 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