Table 2.

The impact of the number of samples for IoU regression.

Numbers	AP	AP${}_{50}$	AP${}_{60}$	AP${}_{70}$	AP${}_{80}$	AP${}_{90}$
32	38.9	57.8	53.5	47.1	36.1	15.3
64	39.0	57.8	53.6	47.2	36.1	15.5
128	39.1	57.9	53.8	47.2	36.4	15.5