1. A method of generating three dimensional body data of a subject; said method comprising: receiving one or more images of the subject from a digital imaging device; partitioning the one or more images into a plurality of segments; analysing the segments of the one or more images to determine the probability that the subject is located in the segment; identifying one or more distributions within the or each partitioned image, each distribution relating to a property of the one or more images; utilising the probabilities and the distributions to produce one or more unique probability maps representing the subject; comparing the one or more unique probability maps with a database of representations of three dimensional bodies to determine a best mapping between the or each unique probability map and a representation determined from the database; and generating three dimensional body data of the subject based on the best mapping.