Why dice similarity is so low for those two images?

2 visualizzazioni (ultimi 30 giorni)
Please see attached images. Even in the eye seem that are very close one image to the other since they are more or less the same with different post processing values.
Yet the dice(x,y) gives me only 0.00272479564032698
where it should give me close to 1. With that number it tells me that those two have nothing in common which is not true.
What am I doing wrong?
  1 Commento
Stelios Fanourakis
Stelios Fanourakis il 12 Set 2019
Has something to do with the Bitdepth? At one pic is 8 and the other is 1.

Accedi per commentare.

Risposta accettata

Image Analyst
Image Analyst il 12 Set 2019
Because not many of the white pixels are in the same location in the two images. Maybe you can try imregister() first to align them, and then try again.
  15 Commenti
Image Analyst
Image Analyst il 16 Set 2019
Modificato: Image Analyst il 16 Set 2019
You might also want ot check out htis Universal Image Quality Index:

Accedi per commentare.

Più risposte (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by