Fuzzy qualitative complex actions recognition

Understanding actions is a complex issue in many aspects. However, most of the literature on action recognition deals with only simple actions. In this paper, we proposed the fuzzy qualitative robot kinematics framework to complex actions over time, e.g. walk then run and over the body, walk while wave hand etc. The human limbs is modelled as articulated rigid bodies and its motion is represented by a series of such models in terms of time. With this, we eventually converted the human motion analysis into a conventional robotic problem which has been well studied. Experimental results has shown that the action model built in this manifold offers few advantages. e.g. handles the tradeoffs in the off-the-shelf tracking algorithm and avoid using generative model where the size of the training data typically goes as the square of the number of states.