num_classes

[yuzhixiaobo]

I see that the calculation of loss_cardinality includes a background class, so should num_class be set to the actual number of categories plus 1.

[iiiidyllic]

I see that the calculation of loss_cardinality includes a background class, so should num_class be set to the actual number of categories plus 1.

Have you tried it later? Does this make sense?

[BikiniBottom1]

我在目标检测的时候设置numclass为2（背景和目标），结果证明是对的