Olbedo: An Albedo and Shading Aerial Dataset for Large-Scale Outdoor Environments
This addresses the lack of real-world datasets for outdoor albedo-shading decomposition, supporting applications like relighting and urban digital twins, though it is incremental as it builds on existing methods with new data.
The authors tackled the problem of intrinsic image decomposition for outdoor scenes by introducing Olbedo, a large-scale aerial dataset with 5,664 UAV images and multi-view consistent annotations, which enabled state-of-the-art models to generalize to real outdoor imagery and improve albedo prediction on the MatrixCity benchmark.
Intrinsic image decomposition (IID) of outdoor scenes is crucial for relighting, editing, and understanding large-scale environments, but progress has been limited by the lack of real-world datasets with reliable albedo and shading supervision. We introduce Olbedo, a large-scale aerial dataset for outdoor albedo--shading decomposition in the wild. Olbedo contains 5,664 UAV images captured across four landscape types, multiple years, and diverse illumination conditions. Each view is accompanied by multi-view consistent albedo and shading maps, metric depth, surface normals, sun and sky shading components, camera poses, and, for recent flights, measured HDR sky domes. These annotations are derived from an inverse-rendering refinement pipeline over multi-view stereo reconstructions and calibrated sky illumination, together with per-pixel confidence masks. We demonstrate that Olbedo enables state-of-the-art diffusion-based IID models, originally trained on synthetic indoor data, to generalize to real outdoor imagery: fine-tuning on Olbedo significantly improves single-view outdoor albedo prediction on the MatrixCity benchmark. We further illustrate applications of Olbedo-trained models to multi-view consistent relighting of 3D assets, material editing, and scene change analysis for urban digital twins. We release the dataset, baseline models, and an evaluation protocol to support future research in outdoor intrinsic decomposition and illumination-aware aerial vision.