roipoly and imdilate for multiple regions without "for" loop- Is there any faster way?

Hello,

I have two 100x40 matrices, X and Y, where each row of X and Y specifies a polygon boundary points, i.e. roipoly(I, X(2,:), Y(2,:) ) gives me a mask corresponds to my second polygon.

Is there any way that I can compute the polygon masks for all my 100 polygons without a for loop?

Also I need to dilate each polygon, but both roipoly and imdilate takes a long time in a for loop.

I'm wondering if there's any faster way to calculate roipoly and dilate multiple regions.

Thanks