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BEVBert: Multimodal Map Pre-training for Language-guided Navigation

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arxiv 2212.04385 v2 pith:G7DMDYRA submitted 2022-12-08 cs.CV cs.AIcs.CLcs.RO

BEVBert: Multimodal Map Pre-training for Language-guided Navigation

classification cs.CV cs.AIcs.CLcs.RO
keywords pre-trainingnavigationhybridincompletelanguage-guidedlearnmap-basedmultimodal
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Large-scale pre-training has shown promising results on the vision-and-language navigation (VLN) task. However, most existing pre-training methods employ discrete panoramas to learn visual-textual associations. This requires the model to implicitly correlate incomplete, duplicate observations within the panoramas, which may impair an agent's spatial understanding. Thus, we propose a new map-based pre-training paradigm that is spatial-aware for use in VLN. Concretely, we build a local metric map to explicitly aggregate incomplete observations and remove duplicates, while modeling navigation dependency in a global topological map. This hybrid design can balance the demand of VLN for both short-term reasoning and long-term planning. Then, based on the hybrid map, we devise a pre-training framework to learn a multimodal map representation, which enhances spatial-aware cross-modal reasoning thereby facilitating the language-guided navigation goal. Extensive experiments demonstrate the effectiveness of the map-based pre-training route for VLN, and the proposed method achieves state-of-the-art on four VLN benchmarks.

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Cited by 15 Pith papers

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  4. GA-VLN: Geometry-Aware BEV Representation for Efficient Vision-Language Navigation

    cs.CV 2026-05 unverdicted novelty 6.0

    GA-VLN builds a geometry-aware BEV representation from RGB-D inputs plus 3D foundation model features to deliver state-of-the-art vision-language navigation using only navigation data.

  5. Dual-Anchoring: Addressing State Drift in Vision-Language Navigation

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  8. NaVid: Video-based VLM Plans the Next Step for Vision-and-Language Navigation

    cs.CV 2024-02 unverdicted novelty 6.0

    NaVid, a video-based VLM trained on 510k navigation and 763k web samples, achieves SOTA VLN performance using only monocular RGB video for next-step action planning in sim and real environments.

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    LCGNav improves online topological VLN-CE by converting local depth views to physically truncated 3D point clouds and applying selective dimension-preserving fusion, yielding consistent gains on R2R-CE and RxR-CE benc...

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    Dual-Anchoring adds explicit progress tokens and retrospective landmark verification to VLN agents, cutting state drift and lifting success rate 15.2% overall with 24.7% gains on long trajectories.

  11. LightZeroNav: Zero-Shot Vision Language Navigation in Continuous Environments Based on Lightweight VLMs

    cs.CV 2026-03 unverdicted novelty 5.0

    LightZeroNav decomposes zero-shot VLN-CE into modules that reduce input redundancy, improve progress tracking from noisy memory, and separate action execution from stage transitions, allowing an 8B VLM to match GPT-4o...

  12. Towards Dual-Brain Minimal Sufficient Representation for Vision-Language Navigation

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    A CP-decomposed, instruction-conditioned latent bottleneck (CompactNav) improves VLN-CE success rate by about 2% over prior state of the art on two benchmarks.

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    DART-VLN applies training-free test-time memory decay and anti-loop regularization to improve discrete VLN agents on R2R and REVERIE benchmarks.

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