FGSR: A Fine-Grained Ship Retrieval Dataset and Method in Smart Cities

Table 4

The ablation study of our proposed method. We denote Trans. as the transformer module in our proposed MBIM.

Method	Rank-1	Rank-5	Rank-10	Rank-20	Rank-40	mAP
Ours w/o PFM	90.4	92.8	94.3	96.2	98.3	90.4
Ours w/o OM	91.8	92.4	95.6	97.2	99.3	91.3
Ours w/o MBIM	89.5	91.2	94.0	95.8	97.5	90.0
Ours w/o trans.	90.3	92.5	94.4	96.6	98.1	90.8
Ours	94.3	95.7	98.4	99.5	100	92.4