Analysis of head and chest movements that correspond to gaze directions during walking
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In this paper, we analyze the relationship between head and chest movements and gaze direction in both walking and non-walking conditions. In a different approach from existing studies, we aim to analyze behavior when humans intentionally gaze at a certain target from two perspectives: (1) the relationship between gaze and body movements and (2) the effects of walking on body motion. We performed three experiments: fixed target scenes (Experiment 1), moving target scenes (Experiment 2) and more realistic gazing scenes (Experiment 3). The experimental results showed a linear relationship between the head and chest directions and gaze directions regardless of walking, non-walking situations, or target movements, and stronger gaze–head correlations than gaze–chest correlations. Further, we found effects of walking that constrained rotational body movements, and that body parts with larger moments were easily affected by walking. These results suggest that the findings of existing studies in non-walking situations may be applicable to walking situations directly or with simple modifications.
KeywordsGaze direction Head and chest movements Gait analysis
This study was supported by the JST CREST “Behavior Understanding based on Intention-Gait Model” project.
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