Why dice similarity is so low for those two images?

3 visualizaciones (últimos 30 días)
Stelios Fanourakis
Stelios Fanourakis el 12 de Sept. de 2019
Editada: Image Analyst el 16 de Sept. de 2019
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 comentario
Stelios Fanourakis
Stelios Fanourakis el 12 de Sept. de 2019
Has something to do with the Bitdepth? At one pic is 8 and the other is 1.

Iniciar sesión para comentar.

Respuesta aceptada

Image Analyst
Image Analyst el 12 de Sept. de 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 comentarios
Stelios Fanourakis
Stelios Fanourakis el 15 de Sept. de 2019
So I might stick with SSIM. I believe it is more accurate for my occasion. Thanks Image Analyst
Image Analyst
Image Analyst el 16 de Sept. de 2019
Editada: Image Analyst el 16 de Sept. de 2019
You might also want ot check out htis Universal Image Quality Index:

Iniciar sesión para comentar.

Más respuestas (0)

Categorías

Más información sobre Geometric Transformation and Image Registration en Help Center y File Exchange.

Community Treasure Hunt

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

Start Hunting!

Translated by