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Reconstructing hand-held objects from a single RGB image is an important and challenging problem. Existing works utilizing Signed Distance Fields (SDF) reveal limitations in comprehensively capturing the complex hand-object interactions,…

计算机视觉与模式识别 · 计算机科学 2023-10-27 Chenyangguang Zhang , Yan Di , Ruida Zhang , Guangyao Zhai , Fabian Manhardt , Federico Tombari , Xiangyang Ji

This paper proposes a deep-learning-based method for recovering a signed distance function (SDF) of a given hypersurface represented by an implicit level set function. Using the flexibility of constructing a neural network, we use an…

数值分析 · 数学 2023-05-16 Yesom Park , Chang hoon Song , Jooyoung Hahn , Myungjoo Kang

SDF-based differential rendering frameworks have achieved state-of-the-art multiview 3D shape reconstruction. In this work, we re-examine this family of approaches by minimally reformulating its core appearance model in a way that…

计算机视觉与模式识别 · 计算机科学 2025-03-26 Briac Toussaint , Diego Thomas , Jean-Sébastien Franco

State-of-the-art neural implicit surface representations have achieved impressive results in indoor scene reconstruction by incorporating monocular geometric priors as additional supervision. However, we have observed that multi-view…

计算机视觉与模式识别 · 计算机科学 2024-05-02 Ziyi Chen , Xiaolong Wu , Yu Zhang

Neural Radiance Fields (NeRF) coupled with GANs represent a promising direction in the area of 3D reconstruction from a single view, owing to their ability to efficiently model arbitrary topologies. Recent work in this area, however, has…

计算机视觉与模式识别 · 计算机科学 2023-03-21 Dario Pavllo , David Joseph Tan , Marie-Julie Rakotosaona , Federico Tombari

Recently, it has shown that priors are vital for neural implicit functions to reconstruct high-quality surfaces from multi-view RGB images. However, current priors require large-scale pre-training, and merely provide geometric clues without…

计算机视觉与模式识别 · 计算机科学 2025-04-01 Wenyuan Zhang , Emily Yue-ting Jia , Junsheng Zhou , Baorui Ma , Kanle Shi , Yu-Shen Liu , Zhizhong Han

Signed distance functions (SDFs) is an attractive framework that has recently shown promising results for 3D shape reconstruction from images. SDFs seamlessly generalize to different shape resolutions and topologies but lack explicit…

计算机视觉与模式识别 · 计算机科学 2023-04-25 Zerui Chen , Shizhe Chen , Cordelia Schmid , Ivan Laptev

We present a novel approach for recovering 3D shape and view dependent appearance from a few colored images, enabling efficient 3D reconstruction and novel view synthesis. Our method learns an implicit neural representation in the form of a…

计算机视觉与模式识别 · 计算机科学 2024-07-22 Mae Younes , Amine Ouasfi , Adnane Boukhayma

Reconstructing detailed 3D scenes from single-view images remains a challenging task due to limitations in existing approaches, which primarily focus on geometric shape recovery, overlooking object appearances and fine shape details. To…

计算机视觉与模式识别 · 计算机科学 2023-11-02 Yixin Chen , Junfeng Ni , Nan Jiang , Yaowei Zhang , Yixin Zhu , Siyuan Huang

Neural implicit representations have emerged as a powerful paradigm for 3D reconstruction. However, despite their success, existing methods fail to capture fine geometric details and thin structures, especially in scenarios where only…

计算机视觉与模式识别 · 计算机科学 2025-04-23 Aarya Patel , Hamid Laga , Ojaswa Sharma

We present learning-based implicit shape representations designed for real-time avatar collision queries arising in the simulation of clothing. Signed distance functions (SDFs) have been used for such queries for many years due to their…

计算机视觉与模式识别 · 计算机科学 2024-11-12 Osman Akar , Yushan Han , Yizhou Chen , Weixian Lan , Benn Gallagher , Ronald Fedkiw , Joseph Teran

Obtaining high-quality 3D reconstructions of room-scale scenes is of paramount importance for upcoming applications in AR or VR. These range from mixed reality applications for teleconferencing, virtual measuring, virtual room planing, to…

计算机视觉与模式识别 · 计算机科学 2022-03-16 Dejan Azinović , Ricardo Martin-Brualla , Dan B Goldman , Matthias Nießner , Justus Thies

Unsigned Distance Functions (UDFs) can be used to represent non-watertight surfaces in a deep learning framework. However, UDFs tend to be brittle and difficult to learn, in part because the surface is located exactly where the UDF is…

计算机视觉与模式识别 · 计算机科学 2025-09-19 Hieu Le , Federico Stella , Benoit Guillard , Pascal Fua

It is vital to infer a signed distance function (SDF) in multi-view based surface reconstruction. 3D Gaussian splatting (3DGS) provides a novel perspective for volume rendering, and shows advantages in rendering efficiency and quality.…

计算机视觉与模式识别 · 计算机科学 2024-10-21 Wenyuan Zhang , Yu-Shen Liu , Zhizhong Han

Deep neural networks (DNNs) are widely applied for nowadays 3D surface reconstruction tasks and such methods can be further divided into two categories, which respectively warp templates explicitly by moving vertices or represent 3D…

计算机视觉与模式识别 · 计算机科学 2023-06-06 Xianghui Yang , Guosheng Lin , Zhenghao Chen , Luping Zhou

Neural rendering can be used to reconstruct implicit representations of shapes without 3D supervision. However, current neural surface reconstruction methods have difficulty learning high-frequency geometry details, so the reconstructed…

计算机视觉与模式识别 · 计算机科学 2022-09-23 Yiqun Wang , Ivan Skorokhodov , Peter Wonka

In this paper, we develop a new method, termed SDF-3DGAN, for 3D object generation and 3D-Aware image synthesis tasks, which introduce implicit Signed Distance Function (SDF) as the 3D object representation method in the generative field.…

计算机视觉与模式识别 · 计算机科学 2023-03-14 Lutao Jiang , Ruyi Ji , Libo Zhang

Neural distance fields (NDF) have emerged as a powerful tool for addressing challenges in 3D computer vision and graphics downstream problems. While significant progress has been made to learn NDF from various kind of sensor data, a crucial…

计算机视觉与模式识别 · 计算机科学 2024-12-23 Akshit Singh , Karan Bhakuni , Rajendra Nagar

Neural implicit reconstruction via volume rendering has demonstrated its effectiveness in recovering dense 3D surfaces. However, it is non-trivial to simultaneously recover meticulous geometry and preserve smoothness across regions with…

计算机视觉与模式识别 · 计算机科学 2025-04-09 Ziyu Tang , Weicai Ye , Yifan Wang , Di Huang , Hujun Bao , Tong He , Guofeng Zhang

We present a simple algorithm for differentiable rendering of surfaces represented by Signed Distance Fields (SDF), which makes it easy to integrate rendering into gradient-based optimization pipelines. To tackle visibility-related…

图形学 · 计算机科学 2024-06-10 Zichen Wang , Xi Deng , Ziyi Zhang , Wenzel Jakob , Steve Marschner