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Predicting Positions of People in Human-Robot Conversational Groups

Talkat HRI 2022 · 2022-03-07..03-10· [robotics]
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System builds heat maps of where people stand relative to an anchor participant by aligning formations with transformation matrices, trains a classifier on SALSA and Babel (80/20 train/test; Babel = 35 min, 7 people), and implements two models to estimate true group size from partial detections and to predict locations of undetected participants. Evaluation uses confusion matrices with strong diagonals, slightly lower accuracy on noisy SALSA, and on-robot demos succeed at detecting missing members and turning the robot toward predicted positions.

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