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Example of a gait sequence for a subject (every fifth frame of a sequence): (a) RGB image sequence, (b) pose sequence with OpenPose, (c) pose sequence with AlphaPose, (d) pose sequence with HRNet. HRNet consistently generates accurate skeletons, while AlphaPose and OpenPose struggle with keypoint detection during self-occlusions, especially at the right shoulder in side views, with OpenPose occasionally losing body segments during leg swings.
