A composition for making a polyurethane foam includes a non-fugitive tertiary amine urethane catalyst and an alkylated polyamine crosslinking additives. The inlet port of the gun manifold is directly coupled with a reservoir of adhesive hot melt liquid that is fixedly attached to the manifold. The secondary scheduling mechanism can use a round robin technique or variant thereof, or any other scheduling methodology. The output image is produced as a sum of the brightness levels in the input image and the blurred image in dependence on the ring likelihoods. The first and second lens groups are arranged in order from a magnification side.