Local Event Alignment for Monocular Distance Estimation - STEEP
Communication Dans Un Congrès Année : 2024

Local Event Alignment for Monocular Distance Estimation

Alignement des Événements Locaux pour l'Estimation de Distance Monoculaire

Résumé

Event cameras provide a natural and data efficient representation of visual information, motivating novel computational strategies towards extracting visual information. Inspired by the biological vision system, we propose a behavior driven approach for object-wise distance estimation from event camera data. This behavior-driven method mimics how biological systems, like the human eye, stabilize their view based on object distance: distant objects require minimal compensatory rotation to stay in focus, while nearby objects demand greater adjustments to maintain alignment. This adaptive strategy leverages natural stabilization behaviors to estimate relative distances effectively. Unlike traditional vision algorithms that estimate depth across the entire image, our approach targets local depth estimation within a specific region of interest. By aligning events within a small region, we estimate the angular velocity required to stabilize the image motion. We demonstrate that, under certain assumptions, the compensatory rotational flow is inversely proportional to the object's distance. The proposed approach achieves new state-of-the-art accuracy in distance estimation -a performance gain of 16% on EVIMO2. EVIMO2 event sequences comprise complex camera motion and substantial variance in depth of static real world scenes.
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Dates et versions

hal-04778721 , version 1 (12-11-2024)

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Identifiants

  • HAL Id : hal-04778721 , version 1

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Nan Cai, Pia Bideau. Local Event Alignment for Monocular Distance Estimation. WACV 2024 - IEEE/CVF Winter Conference on Applications of Computer Vision, Jan 2024, Waikoloa (Hawaï), United States. pp.1-10. ⟨hal-04778721⟩
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