Comprehensive Relighting: Generalizable and Consistent Monocular Human Relighting and Harmonization

Junying Wang; Jingyuan Liu; Xin Sun; Krishna Kumar Singh; Zhixin Shu; He Zhang; Jimei Yang; Nanxuan Zhao; Tuanfeng Y. Wang; Simon S. Chen; Ulrich Neumann; Jae Shin Yoon

arXiv · 2504.03011

Comprehensive Relighting: Generalizable and Consistent Monocular Human Relighting and Harmonization

Junying Wang·Jingyuan Liu·Xin Sun·Krishna Kumar Singh·Zhixin Shu·He Zhang·Jimei Yang·Nanxuan Zhao·Tuanfeng Y. Wang·Simon S. Chen·Ulrich Neumann·Jae Shin Yoon

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Abstract

This paper introduces Comprehensive Relighting, the first all-in-one approach that can both control and harmonize the lighting from an image or video of humans with arbitrary body parts from any scene. Building such a generalizable model is extremely challenging due to the lack of dataset, restricting existing image-based relighting models to a specific scenario (e.g., face or static human). To address this challenge, we repurpose a pre-trained diffusion model as a general image prior and jointly model the human relighting and background harmonization in the coarse-to-fine framework. To further enhance the temporal coherence of the relighting, we introduce an unsupervised temporal lighting model that learns the lighting cycle consistency from many real-world videos without any ground truth. In inference time, our temporal lighting module is combined with the diffusion models through the spatio-temporal feature blending algorithms without extra training; and we apply a new guided refinement as a post-processing to preserve the high-frequency details from the input image. In the experiments, Comprehensive Relighting shows a strong generalizability and lighting temporal coherence, outperforming existing image-based human relighting and harmonization methods.

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Junying Wang, Jingyuan Liu, Xin Sun, Krishna Kumar Singh, Zhixin Shu, He Zhang, Jimei Yang, Nanxuan Zhao, Tuanfeng Y. Wang, Simon S. Chen, Ulrich Neumann, Jae Shin Yoon. 2025-04-03. Comprehensive Relighting: Generalizable and Consistent Monocular Human Relighting and Harmonization. https://arxiv.org/abs/2504.03011

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