We are trying to create a technology so that robots eventually can interact with humans," said Cornelia Fermüller, an associate research scientist at UMIACS. "So they need to understand what humans are doing. For that, we need tools so that the robots can pick up a human's actions and track them in real time. We are interested in understanding all of these components. How is an action performed by humans? How is it perceived by humans? What are the cognitive processes behind it?