IRIS: Inverse Rendering of Indoor Scenes from Low Dynamic Range Images

Inverse rendering seeks to recover 3D geometry, surface material, and lighting from captured images, enabling advanced applications such as novel-view synthesis, relighting, and virtual object insertion. However, most existing techniques rely on high dynamic range (HDR) images as input, limiting accessibility for general users. In response, we introduce IRIS, an inverse rendering framework that recovers the physically based material, spatially-varying HDR lighting, and camera response functions from multi-view, low-dynamic-range (LDR) images. By eliminating the dependence on HDR input, we make inverse rendering technology more accessible. We evaluate our approach on real-world and synthetic scenes and compare it with state-of-the-art methods. Our results show that IRIS effectively recovers HDR lighting, accurate material, and plausible camera response functions, supporting photorealistic relighting and object insertion.

@article{lin2025_2401.12977,
  title={ IRIS: Inverse Rendering of Indoor Scenes from Low Dynamic Range Images },
  author={ Chih-Hao Lin and Jia-Bin Huang and Zhengqin Li and Zhao Dong and Christian Richardt and Tuotuo Li and Michael Zollhöfer and Johannes Kopf and Shenlong Wang and Changil Kim },
  journal={arXiv preprint arXiv:2401.12977},
  year={ 2025 }
}