LuxRemix: Lighting Decomposition and Remixing for Indoor Scenes

LuxRemix tackles a practical pain point in scene capture: once you’ve scanned an indoor environment, lighting is usually baked in and hard to art-direct. The paper uses a generative image-based light decomposition model to split complex illumination into constituent sources, then remixes them independently. That means per-light control over on/off state, chromaticity, and intensity instead of a single global relight.

The other important piece is multi-view lighting harmonization, which keeps the decomposition consistent across all captured views. The authors integrate this into a relightable 3D Gaussian splatting representation, enabling real-time interactive editing. They report photorealistic results on both synthetic and real-world indoor scenes, and compare against state-of-the-art methods. For teams working on virtual production, scene capture, or fast environment iteration, this is the kind of pipeline that could reduce a lot of manual lighting cleanup.