DepthLab: From Partial to Complete
Authors: name: Zhiheng Liu, name: Ka Leong Cheng, name: Qiuyu Wang, name: Shuzhe Wang, name: Hao Ouyang, name: Bin Tan, name: Kai Zhu, name: Yujun Shen, name: Qifeng Chen, name: Ping Luo

Missing values remain a common challenge for depth data across its wide range
of applications, stemming from various causes like incomplete data acquisition
and perspective alteration. This work bridges this gap with DepthLab, a
foundation depth inpainting model powered by image diffusion priors. Our model
features two notable strengths: (1) it demonstrates resilience to
depth-deficient regions, providing reliable completion for both continuous
areas and isolated points, and (2) it faithfully preserves scale consistency
with the conditioned known depth when filling in missing values. Drawing on
these advantages, our approach proves its worth in various downstream tasks,
including 3D scene inpainting, text-to-3D scene generation, sparse-view
reconstruction with DUST3R, and LiDAR depth completion, exceeding current
solutions in both numerical performance and visual quality. Our project page
with source code is available at https://johanan528.github.io/depthlab_web/.