Monocular Endoscopic Tissue 3D Reconstruction with Multi-Level Geometry Regularization

Fuente: arXiv
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Auteurs principaux: Chen, Yangsen, Wang, Hao
Format: Preprint
Publié: 2026
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author Chen, Yangsen
Wang, Hao
author_facet Chen, Yangsen
Wang, Hao
contents Reconstructing deformable endoscopic tissues is crucial for achieving robot-assisted surgery. However, 3D Gaussian Splatting-based approaches encounter challenges in achieving consistent tissue surface reconstruction, while existing NeRF-based methods lack real-time rendering capabilities. In pursuit of both smooth deformable surfaces and real-time rendering, we introduce a novel approach based on 3D Gaussian Splatting. Specifically, we introduce surface-aware reconstruction, initially employing a Sign Distance Field-based method to construct a mesh, subsequently utilizing this mesh to constrain the Gaussian Splatting reconstruction process. Furthermore, to ensure the generation of physically plausible deformations, we incorporate local rigidity and global non-rigidity restrictions to guide Gaussian deformation, tailored for the highly deformable nature of soft endoscopic tissue. Based on 3D Gaussian Splatting, our proposed method delivers a fast rendering process and smooth surface appearances. Quantitative and qualitative analysis against alternative methodologies shows that our approach achieves solid reconstruction quality in both textures and geometries.
format Preprint
id arxiv_https___arxiv_org_abs_2602_20718
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Monocular Endoscopic Tissue 3D Reconstruction with Multi-Level Geometry Regularization
Chen, Yangsen
Wang, Hao
Computer Vision and Pattern Recognition
Reconstructing deformable endoscopic tissues is crucial for achieving robot-assisted surgery. However, 3D Gaussian Splatting-based approaches encounter challenges in achieving consistent tissue surface reconstruction, while existing NeRF-based methods lack real-time rendering capabilities. In pursuit of both smooth deformable surfaces and real-time rendering, we introduce a novel approach based on 3D Gaussian Splatting. Specifically, we introduce surface-aware reconstruction, initially employing a Sign Distance Field-based method to construct a mesh, subsequently utilizing this mesh to constrain the Gaussian Splatting reconstruction process. Furthermore, to ensure the generation of physically plausible deformations, we incorporate local rigidity and global non-rigidity restrictions to guide Gaussian deformation, tailored for the highly deformable nature of soft endoscopic tissue. Based on 3D Gaussian Splatting, our proposed method delivers a fast rendering process and smooth surface appearances. Quantitative and qualitative analysis against alternative methodologies shows that our approach achieves solid reconstruction quality in both textures and geometries.
title Monocular Endoscopic Tissue 3D Reconstruction with Multi-Level Geometry Regularization
topic Computer Vision and Pattern Recognition
url https://arxiv.org/abs/2602.20718