Abstract
With the increasing interest in augmented and virtual reality, visual localization is acquiring a key role in many downstream applications requiring a real-time estimate of the user location only from visual streams. In this paper, we propose an optimized hierarchical localization pipeline by specifically tackling cultural heritage sites with specific applications in museums. Specifically, we propose to enhance the Structure from Motion (SfM) pipeline for constructing the sparse 3D point cloud by a-priori filtering blurred and near-duplicated images. We also study an improved inference pipeline that merges similarity-based localization with geometric pose estimation to effectively mitigate the effect of strong outliers. We show that the proposed optimized pipeline obtains the lowest localization error on the challenging Bellomo dataset [11]. Our proposed approach keeps both build and inference times bounded, in turn enabling the deployment of this pipeline in real-world scenarios.
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Acknowledgements
This research was supported by AI4Media – A European Excellence Centre for Media, Society, and Democracy (EC, H2020 No. 951911), by SUN – Social and hUman ceNtered XR (EC, Horizon Europe No. 101092612), and by VALUE – Visual Analysis For Location And Understanding Of Environments (PO FESR 2014/2020 program, action 1.1.5).
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Messina, N., Falchi, F., Furnari, A., Gennaro, C., Farinella, G.M. (2023). An Optimized Pipeline for Image-Based Localization in Museums from Egocentric Images. In: Foresti, G.L., Fusiello, A., Hancock, E. (eds) Image Analysis and Processing – ICIAP 2023. ICIAP 2023. Lecture Notes in Computer Science, vol 14233. Springer, Cham. https://doi.org/10.1007/978-3-031-43148-7_43
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