DrivingDepth: Sparse-Prompted Pixel-wise Scale Correction for Driving Depth Estimation

• URL: http://arxiv.org/abs/2606.31488v1
• Date: Tue, 30 Jun 2026 11:07:23 GMT
• Title: DrivingDepth: Sparse-Prompted Pixel-wise Scale Correction for Driving Depth Estimation
• Abstract summary: Existing sparse-prompted methods incorporate LiDAR by regenerating depth from scratch, overriding the foundation model's coherent geometry.<n>We propose DrivingDepth, which treats sparse LiDAR as geometric prompts that locally calibrate a frozen foundation prior to residual pixel-wise scale correction.<n>On nuScenes with 4-frame surround-view input, DrivingDepth achieves an AbsRel of 11.19 and an EdgeCR of 5.741, outperforming MapAnything (11.99/1.914) by simultaneously delivering SOTA metric accuracy and geometric consistency.
• Score: 19.18794880895008
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Dense depth estimation for autonomous driving faces a geometry-scale conflict: depth foundation models deliver pixel-aligned dense visual geometry without reliable metric scale, while projected LiDAR provides metric anchors that are sparse, noisy, and misaligned with image structures. Existing sparse-prompted methods incorporate LiDAR by regenerating depth from scratch, overriding the foundation model's coherent geometry and producing structural artifacts on visually continuous surfaces. Our key insight is that foundation models already capture geometrically coherent relative depth; no additional surface structure learning is required-only a per-pixel scale factor mapping relative geometry to metric coordinates. Based on this, we propose DrivingDepth, which treats sparse LiDAR as geometric prompts that locally calibrate a frozen foundation prior through residual pixel-wise scale correction, preserving dense visual geometry by construction. On nuScenes with 4-frame surround-view input, DrivingDepth achieves an AbsRel of 11.19 and an EdgeCR of 5.741, outperforming MapAnything (11.99/1.914) by simultaneously delivering SOTA metric accuracy and geometric consistency.

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