How can i use roifilt2 with a function that has more than 1 parameter?

I need to use roifilt2 with a function that needs more than one parameter apart from the input image. i.e

 I=imread('my_image');

 BW=I>10;

 fun=@chenvese;

 roifilt2(I,BW,fun);

The function chenvese(File Exchange)that performs active contour without edges, is defined as

 seg= chenvese(I,mask,num_iter,mu, method)

How can i pass these parameters through roifilt2? I would prefer this option than setting default values at the function, if no input is given.

Thanks for any ideas.