How can I apply a butterworth filter using imfilter?

Hi all- I'm trying to use imfilter to apply a 1-D Butterworth filter to each pixel of a time series... I'm using imfilter to vectorize my filtering instead of looping over each pixel. The only ways to create a Butterworth filter I can find are...

[a,b] = butter(...) - numerator and denominator form

[z,p,k] = butter(...) - zero & pole form

[A,B,C,D] = butter(...) - state space form

d=fdesign.highpass(...);hd=design(d,'butter'...); - filter object form

From the documentation in imfilter and fspecial, it looks like imfilter takes a filter as a 'correlation kernel'.. I see there are functions to convert z-p to 'SOS' form,'transfer function polynomials','state-space' form, but none to get the 'correlation kernel' out of it which I can use to apply the filter using imfilter. And as for the filter object created with fdesgin, the only thing I can get out of it is the 'SOS matrix', and the 'scale values'.

Is there a way to get this correlation kernel for a Butterworth filter so that I can apply it using imfilter? So for example I would have a filter b which I could make 1-D and apply to my matrix with...

b=myfilter;

H = ones(1,1,length(b));

H(1,1,:)=b;

M_filtered=imfilter(M,H)

Forgive me if I'm missing something obvious about filter design(I'm no expert yet) and thanks in advance!