I've got a specific question and a related more general one... Why does imextendedmax() not give for example 9 in A(3,3) as a max? Generally... what is the best way for finding multiple maxes/peaks? The nice thing about imextended max is it allows a threshold where presumably everything under that threshold is not counted whereas imregionalmax and findpeaks are more general, less effective.

A=round(rand(5)*10)

A =

 1     5     4     8     3
 5     1     8     8     3
 9     3     9     1     2
 9     7     3     5     9
 6     3     5     6     8

B=imextendedmax(A,8)

B =

 1     1     1     1     1
 1     1     1     1     1
 1     1     1     1     1
 1     1     1     1     1
 1     1     1     1     1