Abstract

We present a novel metric for information capacity of fullbody movements. It accommodates HCI scenarios involving continuous movement of multiple limbs. Throughput is calculated as mutual information in repeated motor sequences. It is affected by the complexity of movements and the precision with which an actor reproduces them. Computation requires decorrelating co-dependencies of movement features (e.g., wrist and elbow) and temporal alignment of sequences. HCI researchers can use the metric as an analysis tool when designing and studying user interfaces. Author Keywords Information capacity; full-body movement; measurement; throughput; gesture-based interfaces; information theory ACM Classification Keywords H.5.m. Information interfaces and presentation (e.g., HCI):