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- W4287181024 abstract "In this paper, we address the problem of global-scale image geolocation, proposing a mixed classification-retrieval scheme. Unlike other methods that strictly tackle the problem as a classification or retrieval task, we combine the two practices in a unified solution leveraging the advantages of each approach with two different modules. The first leverages the EfficientNet architecture to assign images to a specific geographic cell in a robust way. The second introduces a new residual architecture that is trained with contrastive learning to map input images to an embedding space that minimizes the pairwise geodesic distance of same-location images. For the final location estimation, the two modules are combined with a search-within-cell scheme, where the locations of most similar images from the predicted geographic cell are aggregated based on a spatial clustering scheme. Our approach demonstrates very competitive performance on four public datasets, achieving new state-of-the-art performance in fine granularity scales, i.e., 15.0% at 1km range on Im2GPS3k." @default.
- W4287181024 created "2022-07-25" @default.
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- W4287181024 date "2021-05-17" @default.
- W4287181024 modified "2023-09-24" @default.
- W4287181024 title "Leveraging EfficientNet and Contrastive Learning for Accurate Global-scale Location Estimation" @default.
- W4287181024 doi "https://doi.org/10.48550/arxiv.2105.07645" @default.
- W4287181024 hasPublicationYear "2021" @default.
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