arXiv Computer Vision By Maximilian Jansen, Gasser Elazab, Praveen Kulkarni

Extrapolation Matters: Sparse-Only Depth Completion Beyond LiDAR Coverage

Read the original on arXiv Computer Vision →

The paper introduces a depth completion method that focuses on extrapolating depth beyond LiDAR coverage, a scenario often overlooked in current research. It uses a frozen monocular depth foundation model, aligns it with sparse LiDAR points, and refines the result with a module that fuses the prior and sparse anchors to produce dense metric depth. A novel high‑frequency normal‑consistency loss and a new evaluation protocol that separates LiDAR‑supported and beyond‑coverage regions are also presented, demonstrating strong accuracy in unobserved areas while maintaining performance where LiDAR data exists.

Machine-generated by The Flow from the publisher's headline and feed description — not written or checked by a human. The full article lives at arXiv Computer Vision.

arXiv Computer Vision
Sep 25

FounRef: Robust, Structure-Preserving, and Fast Metric Refinement of Frozen Monocular Foundation Priors with Sparse Anchors

FounRef is a training‑free method that refines frozen monocular foundation priors into dense metric depth by aligning them with sparse metric anchors. It validates anchors against the prior’s predictions, rejects misaligned ones, and applies a structure‑preserving solver to correct depth globally and locally while preserving fine geometry. The approach works out of the box on unseen cameras and scenes, achieving up to 24% lower depth error, 92% lower surface‑normal noise, and nearly 15× faster inference than a leading depth‑completion network.

By Dan Halperin, Mirko M\"ahlisch
arXiv Computer Vision
2d ago

eSharp: Diffusion-based Sharp Monocular Metric Event-to-Depth Estimation

eSharp is a monocular depth estimation framework that uses an event camera and pretrained diffusion priors to produce accurate, sharp metric depth from sparse LiDAR ground truth. It tackles challenges of fast motion and high-dynamic-range scenes by cross‑modal distillation, generating dense pseudo‑labels from a co‑registered frame camera. Experiments demonstrate that eSharp surpasses existing event‑to‑depth baselines in both depth accuracy and spatial fidelity, positioning diffusion models as a strong foundation for event‑driven 3D perception.

By Qiushi Dai, Aniket Dashpute, Yuhao Liu, Rishubh Parihar, Guha Balakrishnan, Ashok Veeraraghavan