Table 4.

Performance comparison in the second protocol between different methods via MPJPE and AMPJPE from the Human 3.6M synthetic test dataset

Millisecond	80 ms	160 ms	320 ms	400 ms	560 ms	1000 ms	AMPJPE	INV
Zero-velocity	24.4	45.6	78.6	91.1	110.0	138.6	93.4	-
siMLPea	23.7	42.0	81.8	99.4	132.4	176.2	111.1
STSGCNa	38.7	63.9	92.2	108.0	132.9	164.1	115.8
MMixer-3Da	16.0	33.4	66.9	80.8	101.9	130.6	84.6
LTD	16.7	33.5	65.6	79.1	100.4	133.1	84.5
PGBIG	13.3	29.5	61.6	75.3	97.2	132.0	81.7
DMGNN	15.9	31.4	60.4	72.3	92.4	126.2	78.9	$\surd$
MMixer-Euler	13.8	29.5	60.5	73.0	92.0	124.0	77.9	$\surd$
Ours	11.4	26.9	57.1	69.6	89.4	123.9	75.8	$\surd$

The best are highlighted in bold. $_{}^{\mathrm{a}}$indicates the model with a simple network (parameter < 0.2 M). INV indicates whether the method possesses size and view angle invariance