arXiv Computer Vision By Armin Shafiee Sarvestani, Sheyang Tang, Jialu Xu, Zhou Wang

Prior-Guided Single-Exposure HDR Novel View Synthesis via Base-Gain Representation

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PriorGS is a 3D Gaussian Splatting framework for single‑exposure high dynamic range (HDR) novel view synthesis that uses learned priors to guide HDR reconstruction and camera response function (CRF) estimation. It introduces a 3D base‑gain HDR representation, separating HDR radiance into an LDR base and a 3D gain field, which improves robustness to inconsistencies in pseudo‑HDR targets and enables 3D HDR appearance editing. Experiments show PriorGS outperforms existing baselines in HDR reconstruction quality.

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