Threshold detection for face segmentation

Hi
I’m using this example to do some face segmentation. I didn’t saw any attributes to handle the threshold of segmentation for the face ( for exemple to add the hair in the face detection), is there a way to do that without using a third party for segmentation.
Thank you,

Anna

As far as I’m aware you can’t adjust the threshold of segmentation. You could use clever offsets of attachment points to do simple effects, like putting a hat on someone by targeting the forehead and then going up a bit.