how to compare histograms

15 visualizaciones (últimos 30 días)
sakshi Garg
sakshi Garg el 18 de Abr. de 2015
Respondida: Youssef Khmou el 19 de Abr. de 2015
i want to compare two histograms of lbp images.
i tried using pdist2 but it is showing erroneous results.
please help
  2 comentarios
Image Analyst
Image Analyst el 18 de Abr. de 2015
So you have two vectors of 256 elements each, which are most likely going to be different for each index. So, what does "compare" mean to you? And do you know that two images can have the same histogram and look totally different?
sakshi Garg
sakshi Garg el 19 de Abr. de 2015
basically, i want to implement face recognition by histogram matching. so i need a code to compare 1 histogram with many others and find the best match. this match might be in terms of the minimum distance between the two histograms.
if anyone could provide a code for the same, it would be of great help.
thanks in advance

Iniciar sesión para comentar.

Respuestas (1)

Youssef  Khmou
Youssef Khmou el 19 de Abr. de 2015
Many approaches exist for this purpose, the easiest way is the root mean square error metric, the minimum value means best match from all samples, f1 and f2 are two normalized histograms that we want to compare :
rmse= sqrt(mean((f1-f2).^2));

Categorías

Más información sobre Histograms 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