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DecentNeRFs: Decentralized Neural Radiance Fields from Crowdsourced Images

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arxiv 2403.13199 v2 pith:W2C5ET3Z submitted 2024-03-19 cs.CV cs.DC

classification cs.CVcs.DC
keywords nerfsapproachcapturedcentralizedimagespersonalserverusers
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

Neural radiance fields (NeRFs) show potential for transforming images captured worldwide into immersive 3D visual experiences. However, most of this captured visual data remains siloed in our camera rolls as these images contain personal details. Even if made public, the problem of learning 3D representations of billions of scenes captured daily in a centralized manner is computationally intractable. Our approach, DecentNeRF, is the first attempt at decentralized, crowd-sourced NeRFs that require $\sim 10^4\times$ less server computing for a scene than a centralized approach. Instead of sending the raw data, our approach requires users to send a 3D representation, distributing the high computation cost of training centralized NeRFs between the users. It learns photorealistic scene representations by decomposing users' 3D views into personal and global NeRFs and a novel optimally weighted aggregation of only the latter. We validate the advantage of our approach to learn NeRFs with photorealism and minimal server computation cost on structured synthetic and real-world photo tourism datasets. We further analyze how secure aggregation of global NeRFs in DecentNeRF minimizes the undesired reconstruction of personal content by the server.

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Forward citations

Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. FedMeNF: Privacy-Preserving Federated Meta-Learning for Neural Fields

    cs.LG 2025-08 conditional novelty 7.0 of 10

    MDIR detects LLM weight homology from embedding matrices alone using polar decomposition and permutation matching, achieving perfect AUC and accuracy on LeaFBench and reconstructing layer-level transformations.

  2. Cooperative Perception: A Resource-Efficient Framework for Multi-Drone 3D Scene Reconstruction Using Federated Diffusion and NeRF

    cs.AI 2025-08 reject novelty 4.0 of 10

    The framework claims drone swarms can reconstruct 3D scenes by sharing semantic labels and poses, with a federated diffusion model generating missing views for NeRF training.

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