1. A system for human body representation, the system comprising: an imaging system configured to image a person having an exterior pose and a shape; a modeler configured to deform an articulated tree-structured skeleton model having non-rigid parts to the exterior pose, the deformation including adapting lengths of the non-rigid parts of the articulated tree-structured skeleton to the exterior pose of the person, and to deform a mesh template to the shape with the adapted lengths normalized; and a memory configured to store the human body representation of the person based on the deformed skeleton model and the deformed mesh template.