Human action prediction and forecasting based on visual data
Abstract
The ability to observe human movements and predict their actions is a developmental skill acquired by humans early in life. When witnessing a person performing a task, we can easily forecast their subsequent actions based on contextual cues and past experiences. In this work, we aim at developing such abilities for machines, focusing on the tasks of vision-based action prediction, action anticipation and next-active-object prediction. Action prediction is defined as the inference of an action label while the action is still ongoing. Such a capability is useful for early response and further action planning. We consider the problem of action prediction in scenarios involving humans interacting with objects. We formulate an approach that builds time series representations of the performance of the humans and the objects. Such a representation of an ongoing action is then compared to prototype actions. This is achieved by a Dynamic Time Warping (DTW)-based time series alignment framewor ...
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