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In the last decades, the development of smartphones, drones, aerial patrols, and digital cameras enabled high-quality photographs available to large populations and, thus, provides an opportunity to collect massive data of the nature and…

计算机视觉与模式识别 · 计算机科学 2021-11-30 Behzad Golparvar , Ruo-Qian Wang

One of the strategies to detect the pose and shape of unknown objects is their geometric modeling, consisting on fitting known geometric entities. Classical geometric modeling fits simple shapes such as spheres or cylinders, but often those…

图像与视频处理 · 电气工程与系统科学 2024-12-31 Joan Badia Torres , Eric Carmona , Abhijit Makhal , Omid Heidari , Alba Perez Gracia

This paper explores the problem of reconstructing temporally consistent surfaces from a 3D point cloud sequence without correspondence. To address this challenging task, we propose DynoSurf, an unsupervised learning framework integrating a…

计算机视觉与模式识别 · 计算机科学 2024-07-23 Yuxin Yao , Siyu Ren , Junhui Hou , Zhi Deng , Juyong Zhang , Wenping Wang

In this paper, we propose a generative framework that unifies depth-based 3D facial pose tracking and face model adaptation on-the-fly, in the unconstrained scenarios with heavy occlusions and arbitrary facial expression variations.…

计算机视觉与模式识别 · 计算机科学 2019-05-07 Lu Sheng , Jianfei Cai , Tat-Jen Cham , Vladimir Pavlovic , King Ngi Ngan

In this paper, we propose a novel multi-level aggregation network to regress the coordinates of the vertices of a 3D face from a single 2D image in an end-to-end manner. This is achieved by seamlessly combining standard convolutional neural…

计算机视觉与模式识别 · 计算机科学 2022-03-10 Yanda Meng , Xu Chen , Dongxu Gao , Yitian Zhao , Xiaoyun Yang , Yihong Qiao , Xiaowei Huang , Yalin Zheng

We investigate a variation of the 3D registration problem, named multi-model 3D registration. In the multi-model registration problem, we are given two point clouds picturing a set of objects at different poses (and possibly including…

机器人学 · 计算机科学 2024-02-19 David Jin , Sushrut Karmalkar , Harry Zhang , Luca Carlone

This paper delves into the study of 3D point cloud reconstruction from a single image. Our objective is to develop the Consistency Diffusion Model, exploring synergistic 2D and 3D priors in the Bayesian framework to ensure superior…

计算机视觉与模式识别 · 计算机科学 2025-02-03 Chenru Jiang , Chengrui Zhang , Xi Yang , Jie Sun , Yifei Zhang , Bin Dong , Kaizhu Huang

The design of porous infill structures presents significant challenges due to their complex geometric configurations, such as the accurate representation of geometric boundaries and the control of localized maximum stress. In current…

最优化与控制 · 数学 2025-10-14 Shuzhi Xu , Hiroki Kawabe , Kentaro Yaji

We present a novel methodology based on geometric approach to simulate magnification lens effects. Our aim is to promote new applications of powerful geometric modeling techniques in visual computing. Conventional image…

图形学 · 计算机科学 2013-08-05 Bo Li , Xin Zhao

The objective of this article is to address the discretisation of fractured/faulted poromechanical models using 3D polyhedral meshes in order to cope with the geometrical complexity of faulted geological models. A polytopal scheme is…

数值分析 · 数学 2024-03-20 Jérôme Droniou , Guillaume Enchéry , Isabelle Faille , Ali Haidar , Roland Masson

Key points, correspondences, projection matrices, point clouds and dense clouds are the skeletons in image-based 3D reconstruction, of which point clouds have the important role in generating a realistic and natural model for a 3D…

计算机视觉与模式识别 · 计算机科学 2022-06-20 Trung-Kien Le , Ping Li

We present a fully automatic approach for reconstructing compact 3D building models from large-scale airborne point clouds. A major challenge of urban reconstruction from airborne LiDAR point clouds lies in that the vertical walls are…

计算机视觉与模式识别 · 计算机科学 2023-03-10 Jin Huang , Jantien Stoter , Ravi Peters , Liangliang Nan

Reconstructing the underlying 3D surface of an object from a single image is a challenging problem that has received extensive attention from the computer vision community. Many learning-based approaches tackle this problem by learning a 3D…

计算机视觉与模式识别 · 计算机科学 2023-02-28 Nicolai Häni , Jun-Jee Chao , Volkan Isler

We propose SegVec3D, a novel framework for 3D point cloud instance segmentation that integrates attention mechanisms, embedding learning, and cross-modal alignment. The approach builds a hierarchical feature extractor to enhance geometric…

计算机视觉与模式识别 · 计算机科学 2025-07-15 Zhihan Kang , Boyu Wang

The objective of this work is the development of a novel finite element formulation describing the contact interaction of slender beams in complex 3D configurations involving arbitrary beam-to-beam orientations. It is shown in a…

计算工程、金融与科学 · 计算机科学 2018-05-28 Christoph Meier , Alexander Popp , Wolfgang A. Wall

Face alignment, which fits a face model to an image and extracts the semantic meanings of facial pixels, has been an important topic in the computer vision community. However, most algorithms are designed for faces in small to medium poses…

计算机视觉与模式识别 · 计算机科学 2018-04-04 Xiangyu Zhu , Xiaoming Liu , Zhen Lei , Stan Z. Li

We introduce GEM3D -- a new deep, topology-aware generative model of 3D shapes. The key ingredient of our method is a neural skeleton-based representation encoding information on both shape topology and geometry. Through a denoising…

Most recent approaches to monocular 3D human pose estimation rely on Deep Learning. They typically involve regressing from an image to either 3D joint coordinates directly or 2D joint locations from which 3D coordinates are inferred. Both…

计算机视觉与模式识别 · 计算机科学 2017-04-11 Bugra Tekin , Pablo Márquez-Neila , Mathieu Salzmann , Pascal Fua

Robots operating in domestic environments generally need to interact with articulated objects, such as doors, cabinets, dishwashers or fridges. In this work, we present a novel, probabilistic framework for modeling articulated objects as…

机器人学 · 计算机科学 2014-06-02 Jürgen Sturm , Cyrill Stachniss , Wolfram Burgard

Volumetric models have become a popular representation for 3D scenes in recent years. One of the breakthroughs leading to their popularity was KinectFusion, where the focus is on 3D reconstruction using RGB-D sensors. However, monocular…

计算机视觉与模式识别 · 计算机科学 2014-10-27 Victor Adrian Prisacariu , Olaf Kähler , Ming Ming Cheng , Carl Yuheng Ren , Julien Valentin , Philip H. S. Torr , Ian D. Reid , David W. Murray