  The analysis of human motion opens up a wide range of possibilities, such as
realistic training simulations or authentic motions in robotics or animation.
One of the problems underlying motion analysis is the meaningful comparison of
actions based on similarity measures. Since the motion analysis is
application-dependent, it is essential to find the appropriate motion
similarity method for the particular use case. This state of the art report
provides an overview of human motion analysis and different similarity modeling
methods, while mainly focusing on approaches that work with 3D motion data. The
survey summarizes various similarity aspects and features of motion and
describes approaches to measuring the similarity between two actions.
