def compute_feature_4_per_frame(frame):
jid = 3
head = np.asarray([frame[3 * jid], frame[3 * jid + 1], frame[3 * jid + 2]])
jid = 0
root = np.asarray([frame[3 * jid], frame[3 * jid + 1], frame[3 * jid + 2]])
up = np.asarray([0.0, 1.0, 0.0])
angle = angle_between(head - root, up)
return angle
def compute_feature_3_per_frame(frame):
jid = 4
r_shoulder = np.asarray([frame[3 * jid], frame[3 * jid + 1], frame[3 * jid + 2]])
jid = 2
neck = np.asarray([frame[3 * jid], frame[3 * jid + 1], frame[3 * jid + 2]])
jid = 7
l_shoulder = np.asarray([frame[3 * jid], frame[3 * jid + 1], frame[3 * jid + 2]])
angle = angle_between(neck - l_shoulder, r_shoulder - l_shoulder)
return angle
def compute_feature_5_per_frame(frame):
jid = 3
head = np.asarray([frame[3 * jid], frame[3 * jid + 1], frame[3 * jid + 2]])
jid = 2
neck = np.asarray([frame[3 * jid], frame[3 * jid + 1], frame[3 * jid + 2]])
jid = 1
spine = np.asarray([frame[3 * jid], frame[3 * jid + 1], frame[3 * jid + 2]])
angle = angle_between(head - neck, spine - neck)
return angle
