Fusing in 3D: Free-Viewpoint Fusion Rendering with a 3D Infrared-Visible Scene Representation

• URL: http://arxiv.org/abs/2601.12697v1
• Date: Mon, 19 Jan 2026 03:38:05 GMT
• Title: Fusing in 3D: Free-Viewpoint Fusion Rendering with a 3D Infrared-Visible Scene Representation
• Authors: Chao Yang, Deshui Miao, Chao Tian, Guoqing Zhu, Yameng Gu, Zhenyu He,
• Abstract summary: Infrared-visible image fusion aims to integrate infrared and visible information into a single fused image.<n>Existing 2D fusion methods focus on fusing images from fixed camera viewpoints, neglecting a comprehensive understanding of complex scenarios.<n>We propose a novel Infrared-Visible Gaussian Fusion framework, which reconstructs scene geometry from multimodal 2D inputs and enables direct rendering of fused images.
• Score: 9.888838004473323
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Infrared-visible image fusion aims to integrate infrared and visible information into a single fused image. Existing 2D fusion methods focus on fusing images from fixed camera viewpoints, neglecting a comprehensive understanding of complex scenarios, which results in the loss of critical information about the scene. To address this limitation, we propose a novel Infrared-Visible Gaussian Fusion (IVGF) framework, which reconstructs scene geometry from multimodal 2D inputs and enables direct rendering of fused images. Specifically, we propose a cross-modal adjustment (CMA) module that modulates the opacity of Gaussians to solve the problem of cross-modal conflicts. Moreover, to preserve the distinctive features from both modalities, we introduce a fusion loss that guides the optimization of CMA, thus ensuring that the fused image retains the critical characteristics of each modality. Comprehensive qualitative and quantitative experiments demonstrate the effectiveness of the proposed method.

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