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For relocalization in large-scale point clouds, we propose the first approach that unifies global place recognition and local 6DoF pose refinement. To this end, we design a Siamese network that jointly learns 3D local feature detection and…

计算机视觉与模式识别 · 计算机科学 2020-07-21 Juan Du , Rui Wang , Daniel Cremers

The recent development of 3D Gaussian Splatting (3DGS) has led to great interest in 4D dynamic spatial reconstruction. Existing approaches mainly rely on full-length multi-view videos, while there has been limited exploration of online…

计算机视觉与模式识别 · 计算机科学 2025-03-28 Zhening Liu , Yingdong Hu , Xinjie Zhang , Rui Song , Jiawei Shao , Zehong Lin , Jun Zhang

We propose a method for 3D object reconstruction and 6D-pose estimation from 2D images that uses knowledge about object shape as the primary key. In the proposed pipeline, recognition and labeling of objects in 2D images deliver 2D segment…

计算机视觉与模式识别 · 计算机科学 2022-03-03 Marcell Wolnitza , Osman Kaya , Tomas Kulvicius , Florentin Wörgötter , Babette Dellen

Traditional high-quality 3D scanning and reconstruction typically relies on human labor to plan the scanning procedure. With the rapid development of embodied systems such as drones and robots, there is a growing demand of performing…

计算机视觉与模式识别 · 计算机科学 2025-12-05 Chentao Shen , Sizhe Zheng , Bingqian Wu , Yaohua Feng , Yuanchen Fei , Mingyu Mei , Hanwen Jiang , Xiangru Huang

We introduce DreamCraft3D++, an extension of DreamCraft3D that enables efficient high-quality generation of complex 3D assets. DreamCraft3D++ inherits the multi-stage generation process of DreamCraft3D, but replaces the time-consuming…

计算机视觉与模式识别 · 计算机科学 2024-10-18 Jingxiang Sun , Cheng Peng , Ruizhi Shao , Yuan-Chen Guo , Xiaochen Zhao , Yangguang Li , Yanpei Cao , Bo Zhang , Yebin Liu

Recent advancements in 3D robotic manipulation have improved grasping of everyday objects, but transparent and specular materials remain challenging due to depth sensing limitations. While several 3D reconstruction and depth completion…

机器人学 · 计算机科学 2025-06-23 Mingxu Zhang , Xiaoqi Li , Jiahui Xu , Kaichen Zhou , Hojin Bae , Yan Shen , Chuyan Xiong , Hao Dong

Spectrum sensing and the generation of 3D Radio Environment Maps (REMs) are essential for enabling spectrum sharing within cognitive radio networks. While Uncrewed Aerial Vehicles (UAVs) offer high-mobility 3D sensing, REM accuracy is…

信号处理 · 电气工程与系统科学 2026-05-26 Mushfiqur Rahman , Sung Joon Maeng , Ismail Guvenc , Chau-Wai Wong , Mihail Sichitiu , Jason A. Abrahamson , Arupjyoti Bhuyan

The climate crisis we are facing calls for significant improvements in our understanding of natural phenomena, with clouds being identified as a dominant source of uncertainty. To this end, the emerging field of 3D computed cloud tomography…

信号处理 · 电气工程与系统科学 2021-12-01 Changrak Choi , Anthony B. Davis

Simulation-based image quality metrics are adapted and investigated for characterizing the parameter dependences of linear iterative image reconstruction for DBT. Three metrics based on 2D DBT simulation are investigated: (1) a…

医学物理 · 物理学 2017-11-01 Sean D. Rose , Adrian A. Sanchez , Emil Y. Sidky , Xiaochuan Pan

Asteroid 2016 HO3, a small asteroid (<60 m) in super fast rotation state (~28 min), and is the target of China's Tianwen-2 asteroid sample-return mission. In this work, we investigate its structural stability using an advanced…

地球与行星天体物理 · 物理学 2024-01-05 Bin Cheng , Hexi Baoyin

This paper presents the development and evaluation of an optimization-based autonomous trajectory planning algorithm for the asteroid reconnaissance phase of a deep-space exploration mission. The reconnaissance phase is a low-altitude flyby…

Reconstructing accurate 3D surfaces for street-view scenarios is crucial for applications such as digital entertainment and autonomous driving simulation. However, existing street-view datasets, including KITTI, Waymo, and nuScenes, only…

计算机视觉与模式识别 · 计算机科学 2024-11-08 Yubin Hu , Kairui Wen , Heng Zhou , Xiaoyang Guo , Yong-Jin Liu

The paper focuses on the algorithm for improving the quality of 3D reconstruction and segmentation in DSP-SLAM by enhancing the RGB image quality. SharpSLAM algorithm developed by us aims to decrease the influence of high dynamic motion on…

We propose R3GS, a robust reconstruction and relocalization framework tailored for unconstrained datasets. Our method uses a hybrid representation during training. Each anchor combines a global feature from a convolutional neural network…

计算机视觉与模式识别 · 计算机科学 2025-05-22 Xu yan , Zhaohui Wang , Rong Wei , Jingbo Yu , Dong Li , Xiangde Liu

3D reconstruction can be used as a platform to monitor the performance of activities on construction site, such as construction progress monitoring, structure inspection and post-disaster rescue. Comparing to other sensors, RGB image has…

机器人学 · 计算机科学 2018-05-21 Zhexiong Shang , Zhigang Shen

This paper presents a design for a drop tower test to evaluate a numerical model for a structurally reconfigurable spacecraft with actuatable joints, referred to as a transformable spacecraft. A mock-up robot for a 3U-sized transformable…

天体物理仪器与方法 · 物理学 2025-10-03 Yuki Kubo , Tsubasa Ando , Hirona Kawahara , Shu Miyata , Naoya Uchiyama , Kazutoshi Ito , Yoshiki Sugawara

3D Gaussian Splatting (3DGS) has emerged as a powerful approach for 3D scene reconstruction using 3D Gaussians. However, neither the centers nor surfaces of the Gaussians are accurately aligned to the object surface, complicating their…

计算机视觉与模式识别 · 计算机科学 2026-03-09 Miriam Jäger , Markus Hillemann , Boris Jutzi

We present TreeON, a novel neural-based framework for reconstructing detailed 3D tree point clouds from sparse top-down geodata, using only a single orthophoto and its corresponding Digital Surface Model (DSM). Our method introduces a new…

图形学 · 计算机科学 2026-03-12 Angeliki Grammatikaki , Johannes Eschner , Pedro Hermosilla , Oscar Argudo , Manuela Waldner

With advancements in satellite imaging technology, acquiring high-resolution multi-view satellite imagery has become increasingly accessible, enabling rapid and location-independent ground model reconstruction. However, traditional stereo…

计算机视觉与模式识别 · 计算机科学 2025-09-05 Tianle Liu , Shuangming Zhao , Wanshou Jiang , Bingxuan Guo