lib/utils/vis.py [147:158]:
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    mid_shoulder = (
        kps[:2, dataset_keypoints.index('right_shoulder')] +
        kps[:2, dataset_keypoints.index('left_shoulder')]) / 2.0
    sc_mid_shoulder = np.minimum(
        kps[2, dataset_keypoints.index('right_shoulder')],
        kps[2, dataset_keypoints.index('left_shoulder')])
    mid_hip = (
        kps[:2, dataset_keypoints.index('right_hip')] +
        kps[:2, dataset_keypoints.index('left_hip')]) / 2.0
    sc_mid_hip = np.minimum(
        kps[2, dataset_keypoints.index('right_hip')],
        kps[2, dataset_keypoints.index('left_hip')])
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lib/utils/vis.py [351:362]:
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            mid_shoulder = (
                kps[:2, dataset_keypoints.index('right_shoulder')] +
                kps[:2, dataset_keypoints.index('left_shoulder')]) / 2.0
            sc_mid_shoulder = np.minimum(
                kps[2, dataset_keypoints.index('right_shoulder')],
                kps[2, dataset_keypoints.index('left_shoulder')])
            mid_hip = (
                kps[:2, dataset_keypoints.index('right_hip')] +
                kps[:2, dataset_keypoints.index('left_hip')]) / 2.0
            sc_mid_hip = np.minimum(
                kps[2, dataset_keypoints.index('right_hip')],
                kps[2, dataset_keypoints.index('left_hip')])
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