A method for deriving accurate body size measures of a user from a sequence of 2D images includes: a) automatically guiding the user through a sequence of body poses and motions b) scanning the body of said user by obtaining a sequence of raw 2D images of said user as captured by at least one camera during said guided sequence of poses and motions c) analyzing the behavior of said user to ensure that the user follows the provided instructions d) extracting and encoding 2D shape data descriptors from said sequence of images by using a 2D shape analyzer (2DSA) and e) integrating said 2D shape descriptors and data representing the users position, pose and rotation into a 3D shape model.
