Gaussian Mesh Renderer for Lightweight Differentiable Rendering

• URL: http://arxiv.org/abs/2602.14493v1
• Date: Mon, 16 Feb 2026 06:15:42 GMT
• Title: Gaussian Mesh Renderer for Lightweight Differentiable Rendering
• Authors: Xinpeng Liu, Fumio Okura,
• Abstract summary: We propose a new lightweight differentiable mesh based on 3DGS, named Gaussian Mesh Renderer (GMR)<n>Each Gaussian primitive is analytically derived from the corresponding mesh triangle, preserving structural fidelity and enabling the flow.<n>Compared to the traditional mesh gradients, our method achieves smoother gradients, which especially contributes to better optimization using smaller batch sizes with limited memory.
• Score: 13.167103232611487
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: 3D Gaussian Splatting (3DGS) has enabled high-fidelity virtualization with fast rendering and optimization for novel view synthesis. On the other hand, triangle mesh models still remain a popular choice for surface reconstruction but suffer from slow or heavy optimization in traditional mesh-based differentiable renderers. To address this problem, we propose a new lightweight differentiable mesh renderer leveraging the efficient rasterization process of 3DGS, named Gaussian Mesh Renderer (GMR), which tightly integrates the Gaussian and mesh representations. Each Gaussian primitive is analytically derived from the corresponding mesh triangle, preserving structural fidelity and enabling the gradient flow. Compared to the traditional mesh renderers, our method achieves smoother gradients, which especially contributes to better optimization using smaller batch sizes with limited memory. Our implementation is available in the public GitHub repository at https://github.com/huntorochi/Gaussian-Mesh-Renderer.

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