[Insight-users] Image derivative

[Moti Freiman]

Hello,
This may be a stupid question, but i want to be sure:
I need to compute image derivative in some axis, lets say the x axis. i 
want to compute the derivative by using the central differences scheme 
(*not* sobel or iir or other methods).
Is there in ITK a prepared filtre which do this, or  should i use the 
neighbourhood iterators to compute it by myself?
Thanks,
Moti Freiman