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When learning to sketch, beginners start with simple and flexible shapes, and then gradually strive for more complex and accurate ones in the subsequent training sessions. In this paper, we design a "shape curriculum" for learning…

Computer Vision and Pattern Recognition · Computer Science 2020-07-20 Yueqi Duan , Haidong Zhu , He Wang , Li Yi , Ram Nevatia , Leonidas J. Guibas

We propose SDFDiff, a novel approach for image-based shape optimization using differentiable rendering of 3D shapes represented by signed distance functions (SDFs). Compared to other representations, SDFs have the advantage that they can…

Computer Vision and Pattern Recognition · Computer Science 2022-02-23 Yue Jiang , Dantong Ji , Zhizhong Han , Matthias Zwicker

Dense 3D object reconstruction from a single image has recently witnessed remarkable advances, but supervising neural networks with ground-truth 3D shapes is impractical due to the laborious process of creating paired image-shape datasets.…

Computer Vision and Pattern Recognition · Computer Science 2020-10-21 Chen-Hsuan Lin , Chaoyang Wang , Simon Lucey

We present iSDF, a continual learning system for real-time signed distance field (SDF) reconstruction. Given a stream of posed depth images from a moving camera, it trains a randomly initialised neural network to map input 3D coordinate to…

The latest sheet stamping processes enable efficient manufacturing of complex shape structural components that have high stiffness to weight ratios, but these processes can introduce defects. To assist component design for stamping…

Machine Learning · Computer Science 2022-02-09 Hamid Reza Attar , Alistair Foster , Nan Li

Medical image segmentation is a crucial task that relies on the ability to accurately identify and isolate regions of interest in medical images. Thereby, generative approaches allow to capture the statistical properties of segmentation…

Computer Vision and Pattern Recognition · Computer Science 2023-07-24 Lea Bogensperger , Dominik Narnhofer , Filip Ilic , Thomas Pock

Semi-supervised learning has attracted much attention in medical image segmentation due to challenges in acquiring pixel-wise image annotations, which is a crucial step for building high-performance deep learning methods. Most existing…

Computer Vision and Pattern Recognition · Computer Science 2020-10-22 Shuailin Li , Chuyu Zhang , Xuming He

Neural surfaces learning has shown impressive performance in multi-view surface reconstruction. However, most existing methods use large multilayer perceptrons (MLPs) to train their models from scratch, resulting in hours of training for a…

Computer Vision and Pattern Recognition · Computer Science 2023-12-20 Jianyao Xu , Qingshan Xu , Xinyao Liao , Wanjuan Su , Chen Zhang , Yew-Soon Ong , Wenbing Tao

Accurate mapping and localization are very important for many industrial robotics applications. In this paper, we propose an improved Signed Distance Function (SDF) for both 2D SLAM and pure localization to improve the accuracy of mapping…

Robotics · Computer Science 2021-01-21 Xingyin Fu , Zheng Fang , Xizhen Xiao , Yijia He , Xiao Liu

Morphological analysis of the left atrial appendage is an important tool to assess risk of ischemic stroke. Most deep learning approaches for 3D segmentation is guided by binary labelmaps, which results in voxelized segmentations unsuitable…

Image and Video Processing · Electrical Eng. & Systems 2019-08-29 Kristine Aavild Juhl , Rasmus Reinhold Paulsen , Anders Bjorholm Dahl , Vedrana Andersen Dahl , Ole de Backer , Klaus Fuglsang Kofoed , Oscar Camara

Channel knowledge map (CKM) is a promising technique to achieve environment-aware wireless communication and sensing. Constructing the complete CKM based on channel knowledge observations at sparse locations is a fundamental problem for…

Image and Video Processing · Electrical Eng. & Systems 2026-04-27 Z. Chen , S. Fu , Y. Zeng , X. Xu , Z. Wei

Probabilistic diffusion models have achieved state-of-the-art results for image synthesis, inpainting, and text-to-image tasks. However, they are still in the early stages of generating complex 3D shapes. This work proposes Diffusion-SDF, a…

Computer Vision and Pattern Recognition · Computer Science 2023-03-17 Gene Chou , Yuval Bahat , Felix Heide

Statistical shape modeling is an important tool to characterize variation in anatomical morphology. Typical shapes of interest are measured using 3D imaging and a subsequent pipeline of registration, segmentation, and some extraction of…

Computer Vision and Pattern Recognition · Computer Science 2018-10-02 Riddhish Bhalodia , Shireen Y. Elhabian , Ladislav Kavan , Ross T. Whitaker

We propose an algorithm to (i) learn online a deep signed distance function (SDF) with a LiDAR-equipped robot to represent the 3D environment geometry, and (ii) plan collision-free trajectories given this deep learned map. Our algorithm…

Robotics · Computer Science 2022-08-04 Gadiel Sznaier Camps , Robert Dyro , Marco Pavone , Mac Schwager

Neural Surface Reconstruction has become a standard methodology for indoor 3D reconstruction, with Signed Distance Functions (SDFs) proving particularly effective for representing scene geometry. A variety of applications require a detailed…

Computer Vision and Pattern Recognition · Computer Science 2026-05-06 Remi Chierchia , Léo Lebrat , David Ahmedt-Aristizabal , Olivier Salvado , Clinton Fookes , Rodrigo Santa Cruz

We propose a novel method for reconstructing explicit parameterized surfaces from Signed Distance Fields (SDFs), a widely used implicit neural representation (INR) for 3D surfaces. While traditional reconstruction methods like Marching…

Graphics · Computer Science 2024-10-07 Haotian Yin , Przemyslaw Musialski

We present a novel deep learning-based approach to the 3D reconstruction of clothed humans using weak supervision via 2D normal maps. Given a single RGB image or multiview images, our network infers a signed distance function (SDF)…

Computer Vision and Pattern Recognition · Computer Science 2023-11-28 Jane Wu , Diego Thomas , Ronald Fedkiw

Recently there has been renewed interest in signed distance bound representations due to their unique properties for 3D shape modelling. This is especially the case for deep learning-based bounds. However, it is beneficial to work with…

Graphics · Computer Science 2024-04-08 Nenad Markuš , Mirko Sužnjević

A signed distance function (SDF) as the 3D shape description is one of the most effective approaches to represent 3D geometry for rendering and reconstruction. Our work is inspired by the state-of-the-art method DeepSDF that learns and…

Computer Vision and Pattern Recognition · Computer Science 2021-08-20 Shun Yao , Fei Yang , Yongmei Cheng , Mikhail G. Mozerov

We introduce a new generative approach for synthesizing 3D geometry and images from single-view collections. Most existing approaches predict volumetric density to render multi-view consistent images. By employing volumetric rendering using…

Computer Vision and Pattern Recognition · Computer Science 2024-06-17 Salvatore Esposito , Qingshan Xu , Kacper Kania , Charlie Hewitt , Octave Mariotti , Lohit Petikam , Julien Valentin , Arno Onken , Oisin Mac Aodha