LGNet: Location-Guided Network for Road Extraction From Satellite Images - Archive ouverte HAL
Article Dans Une Revue IEEE Transactions on Geoscience and Remote Sensing Année : 2023

LGNet: Location-Guided Network for Road Extraction From Satellite Images

Résumé

Road connectivity is vital in road extraction for accurate vehicle navigation. However, the segmentation-based methods fail to model the connectivity resulting in broken road segments. Therefore, we propose a location-guided network (LGNet) for promoting connectivity performance in a very effective and efficient way. Specifically, an auxiliary road location prediction (RLP) task is designed to obtain global road connectivity information, which improves the performance of road segmentation. The RLP can predict the location coordinates of the whole road with row anchors and column anchors. By aggregating the global location context to the segmentation branch with a location-guided decoder (LG-Decoder), the features can finally capture the connectivity of each road segment. Overall, LGNet has the following advantages: 1) the proposed RLP and location context guidance (LCG) can plug into any encoder–decoder network and achieve an impressive performance; 2) high computational efficiency. In comparison with the multi-branch method, our proposed LGNet requires about 6× fewer GFLOPs; and 3) superior road connectivity performance. A series of experiments are conducted on two road extraction datasets (SpaceNet and DeepGlobe), confirming the effectiveness of the LGNet.
Fichier principal
Vignette du fichier
full_text_hal_04473563.pdf (7.25 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-04473563 , version 1 (23-04-2024)

Identifiants

Citer

Jingtao Hu, Junyu Gao, Yuan Yuan, Jocelyn Chanussot, Qi Wang. LGNet: Location-Guided Network for Road Extraction From Satellite Images. IEEE Transactions on Geoscience and Remote Sensing, 2023, 61, pp.5619112. ⟨10.1109/TGRS.2023.3305031⟩. ⟨hal-04473563⟩
105 Consultations
43 Téléchargements

Altmetric

Partager

More