Acta Optica Sinica, Volume. 44, Issue 24, 2428011(2024)
Fast Cascade Retrieval Method for UAV Images with GNSS Rejection
Figures & Tables(13)
Fig. 1. Rapid cascade retrieval process of UAV images under GNSS rejection conditions
Table 1. ISFFRN structure
View tableTable 1. ISFFRN structure
Device Structure Feature encoder CONV 1a (3, 3, 64, 2) CONV 1b (3, 64, 64, 2) CONV 2a (3, 64, 128, 2) CONV 2b (3, 128, 128, 2) CONV 3a (3, 128, 256, 1) CONV 3b (3, 256, 256, 1) Feature decoder CONV Pa (3, 256, 256, 1) CONV Pb (1, 256, 65, 1) Descriptor decoder CONV Da (3, 256, 256, 1) CONV Db (1, 256, 256, 1)
Table 2. Hardware experiment environment
View tableTable 2. Hardware experiment environment
Category Configuration Type number NVIDIA Jetson AGX Orin Memory 64 GB 256-bit LPDDR5 CPU 12-core Arm Cortex-A78AE 64-bit 2.2 GHz GPU NVIDIA Ampere architecture System Ubuntu 22.04 Environment Python 3.10, torch 2.2.0
Table 3. Experimental image data table
View tableTable 3. Experimental image data table
Data Vienna Chicago Satellite images UAV images Satellite images UAV images Spatial resolution /(m/pixel) 1.0 0.6 1.0 0.6 Top left corner coordinates 16.3526E, 48.2349N 16.4031E, 48.2110N 87.7048W, 41.9046N 87.6872W, 41.8864N Bottom right corner coordinates 16.4563E, 48.1505N 16.4233E, 48.1975N -87.6363W, 41.8524N 87.6517W, 41.8559N Projection WGS 84 WGS 84 WGS 84 WGS 84 Product of surface /km² 72.178 2.248 32.920 10.028
Table 4. Rapid retrieval results of UAV images
View tableTable 4. Rapid retrieval results of UAV images
Image region ToCP@6 of initialretrieval /% ToCP@1 of initial
retrieval /%
ToCP@1 of secondaryretrieval /% Average time /s Initial retrieval Secondary retrieval Vienna 50 0 100 0.1638 0.2401 Chicago 50 0 100 0.1702 0.3042
Table 5. Efficiency comparison of image retrieval methods
View tableTable 5. Efficiency comparison of image retrieval methods
Image region ToCP@6 /% ToCP@1 /% Average total time /s Only secondary retrieval Cascaderetrieval Only secondary retrieval Cascaderetrieval Only secondary retrieval Cascade retrieval Vienna 100 50 100 100 1.3284 0.4039 Chicago 100 50 100 100 1.9924 0.4744
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Han Gao, Ying Yu, Li Li, Lei Li, Liang Song, Lei Zhang. Fast Cascade Retrieval Method for UAV Images with GNSS Rejection[J]. Acta Optica Sinica, 2024, 44(24): 2428011
Paper Information
Category: Remote Sensing and Sensors
Received: May. 14, 2024
Accepted: Jun. 17, 2024
Published Online: Dec. 17, 2024
The Author Email: Ying Yu (yuying5559104@163.com)
CSTR:32393.14.AOS241011
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