Accurate 3-DoF Camera Geo-Localization via Ground-to-Satellite Image Matching

We address the problem of ground-to-satellite image geo-localization, that is, estimating the camera latitude, longitude and orientation (azimuth angle) by matching a query image captured at the ground level against a large-scale database with geotagged satellite images. Our prior arts treat the abo...

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Veröffentlicht in:IEEE transactions on pattern analysis and machine intelligence. - 1979. - 45(2023), 3 vom: 11. März, Seite 2682-2697
1. Verfasser: Shi, Yujiao (VerfasserIn)
Weitere Verfasser: Yu, Xin, Liu, Liu, Campbell, Dylan, Koniusz, Piotr, Li, Hongdong
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:IEEE transactions on pattern analysis and machine intelligence
Schlagworte:Journal Article
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245 1 0 |a Accurate 3-DoF Camera Geo-Localization via Ground-to-Satellite Image Matching 
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520 |a We address the problem of ground-to-satellite image geo-localization, that is, estimating the camera latitude, longitude and orientation (azimuth angle) by matching a query image captured at the ground level against a large-scale database with geotagged satellite images. Our prior arts treat the above task as pure image retrieval by selecting the most similar satellite reference image matching the ground-level query image. However, such an approach often produces coarse location estimates because the geotag of the retrieved satellite image only corresponds to the image center while the ground camera can be located at any point within the image. To further consolidate our prior research finding, we present a novel geometry-aware geo-localization method. Our new method is able to achieve the fine-grained location of a query image, up to pixel size precision of the satellite image, once its coarse location and orientation have been determined. Moreover, we propose a new geometry-aware image retrieval pipeline to improve the coarse localization accuracy. Apart from a polar transform in our conference work, this new pipeline also maps satellite image pixels to the ground-level plane in the ground-view via a geometry-constrained projective transform to emphasize informative regions, such as road structures, for cross-view geo-localization. Extensive quantitative and qualitative experiments demonstrate the effectiveness of our newly proposed framework. We also significantly improve the performance of coarse localization results compared to the state-of-the-art in terms of location recalls 
650 4 |a Journal Article 
700 1 |a Yu, Xin  |e verfasserin  |4 aut 
700 1 |a Liu, Liu  |e verfasserin  |4 aut 
700 1 |a Campbell, Dylan  |e verfasserin  |4 aut 
700 1 |a Koniusz, Piotr  |e verfasserin  |4 aut 
700 1 |a Li, Hongdong  |e verfasserin  |4 aut 
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