低自由度ロボットにおける感情表現：Reachy Miniを用いた知覚評価
Emotional Expression in Low-Degrees-of-Freedom Robots: Assessing Perception with Reachy Mini
低自由度で非人間的な表現しかできないロボットReachy Miniの感情表現を、オンライン実験で100人がどう知覚するかを調べた論文。正確な感情認識は限定的だが、覚醒度や感情価などの感情の大まかな意味は伝わり、社会的評価にも影響することが示された。
詳しい要約
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2. 先行研究と比べてどこがすごい？
3. 技術・手法の肝は？
4. どうやって有効だと検証した？
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著者: Amit Rogel, Elmira Yadollahi, Guy Laban
分類: cs.RO, cs.HC
原文アブストラクト
Emotion expression is central to human--robot interaction, yet little is known about how people interpret affect on robots with sparse, non-anthropomorphic expressive capabilities. This study examined how people perceive emotional expressions displayed by Reachy Mini (Pollen Robotics and Hugging Face), a low-degree-of-freedom (low-DoF) robot with a constrained and distinctly non-human expressive repertoire. In an online within-subjects study, 100 participants viewed 10 short video clips of Reachy Mini expressing different emotions and, for each clip, identified the perceived emotion, rated its valence and arousal, and evaluated the robot on social-perception traits. Exact emotion recognition was modest overall and varied considerably across expressions, with anger, sadness, and interest recognized more reliably than emotions such as love, pleasure, shame, and disgust. However, participants were generally more successful at recovering broader affective meaning than exact emotion labels, particularly along valence and arousal dimensions. Emotional expressions also shaped social evaluation, as positive expressions were perceived as warmer and more sociable than negative ones, and animacy varied less across conditions. These findings suggest that even constrained robotic expressions can communicate affective meaning and influence social impressions, positioning Reachy Mini as a useful benchmark for studying affective communication in low-DoF robots.
