For a living person it's better to scan using multiple cameras setup. My example of game environment, mostly photoscanned http://i.imgur.com/nxZQAZe.jpg
You should add stuff in side the... hole. Bellow is an example: http://www.digitalarmadagamestudios.com/mod_images/turbine_waterfan_highpoly_radiosity2.jpg (credit goes to darkmatter for model)