Author

Tim Meinhardt

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Preprint Oct 2026

Foundation4D: Towards a unified perception and reconstruction model for autonomous vehicles

We introduce Foundation4D, a unified feed-forward model for geometry estimation, 3D detection, semantic occupancy, and Gaussian reconstruction from multi-camera driving video. A shared backbone uses factorized spatiotemporal attention to efficiently combine observations across cameras and time. Our video inference pipe...

Nvidia Sérgio Agostinho, Maximilian Apodaca, Emmanuel Attia et al. · 0 citations

#artificial intelligence Preprint Sep 2026

Beyond the Image Plane: World-Grounded Queries for Multi-Object Tracking

This work introduces PLANET, an end-to-end multi-object tracker designed to move beyond the image plane, and lifts existing 2D tracking datasets into 3D by embedding reconstructed 3D scene geometry into the features and positional encodings used during query formation.

Orcun Cetintas, Guillem Brasó, Tim Meinhardt et al. · 0 citations