REALM: RGBとイベントを整列する潜在多様体によるクロスモーダル知覚
REALM: An RGB- and Event-Aligned Latent Manifold for Cross-Modal Perception
イベントカメラのデータをRGB基盤モデルの潜在空間に写像するフレームワークを提案し、事前学習済みのRGBバックボーンをイベントデータに活用して、深度推定やセマンティックセグメンテーションなどのタスクを実現する。
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著者: Vincenzo Polizzi, David B. Lindell, Jonathan Kelly
分類: cs.CV, cs.AI, cs.RO
原文アブストラクト
Event cameras provide several unique advantages over standard frame-based sensors, including high temporal resolution, low latency, and robustness to extreme lighting. However, existing learning-based approaches for event processing are typically confined to narrow, task-specific silos and lack the ability to generalize across modalities. We address this gap with REALM, a cross-modal framework that learns an RGB- and Event-Aligned Latent Manifold by projecting event representations into the pretrained latent space of RGB foundation models. Instead of task-specific training, we leverage low-rank adaptation (LoRA) to bridge the modality gap, effectively unlocking the geometric and semantic priors of frozen RGB backbones for asynchronous event streams. We demonstrate that REALM effectively maps events into the ViT-based foundation latent space. Our method performs downstream tasks, such as depth estimation and semantic segmentation, by simply transferring linear heads trained on the RGB teacher. Most significantly, REALM enables the direct, zero-shot application of complex, frozen image-trained decoders, such as MASt3R, to raw event data. We demonstrate state-of-the-art performance in wide-baseline feature matching, significantly outperforming specialized architectures. Code and models are available at https://papers.starslab.ca/realm/.
