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Dense reconstruction and differentiable rendering are fundamental tightly connected operations in 3D vision and computer graphics. Recent neural implicit representations demonstrate compelling advantages in reconstruction fidelity and…

机器人学 · 计算机科学 2026-05-25 Zhirui Dai , Hojoon Shin , Yulun Tian , Ki Myung Brian Lee , Nikolay Atanasov

With the prevalence of multimodal learning, camera-LiDAR fusion has gained popularity in 3D object detection. Although multiple fusion approaches have been proposed, they can be classified into either sparse-only or dense-only fashion based…

计算机视觉与模式识别 · 计算机科学 2023-04-11 Yulu Gao , Chonghao Sima , Shaoshuai Shi , Shangzhe Di , Si Liu , Hongyang Li

Wireless radiance field (WRF) reconstruction aims to learn a continuous, queryable representation of radio frequency characteristics over 3D space and direction, from which specific quantities, such as the spatial power spectrum (SPS) at a…

信号处理 · 电气工程与系统科学 2026-04-30 Jinghan Zhang , Xitao Gong , Qi Wang , Richard A. Stirling-Gallacher , Giuseppe Caire

Three-dimensional reconstruction in scenes with extreme depth variations remains challenging due to inconsistent supervisory signals between near-field and far-field regions. Existing methods fail to simultaneously address inaccurate depth…

计算机视觉与模式识别 · 计算机科学 2025-11-14 Yu Deng , Baozhu Zhao , Junyan Su , Xiaohan Zhang , Qi Liu

RSS-based device-free localization (DFL) monitors changes in the received signal strength (RSS) measured by a network of static wireless nodes to locate people without requiring them to carry or wear any electronic device. Current models…

网络与互联网体系结构 · 计算机科学 2013-02-26 Ossi Kaltiokallio , Maurizio Bocca , Neal Patwari

A massive MIMO system entails a large number of base station antennas M serving a much smaller number of users. This leads to large gains in spectral and energy efficiency compared with other technologies. As the number of antennas M grows,…

信息论 · 计算机科学 2018-07-13 Ansuman Adhikary , Alexei Ashikhmin

Accurate channel state information (CSI) is a critical bottleneck in modern wireless networks, with pilot overhead consuming 11\% to 21\% of transmission bandwidth and feedback delays causing severe throughput degradation under mobility.…

信号处理 · 电气工程与系统科学 2026-02-11 Muhammad Umer , Muhammad Ahmed Mohsin , Ahsan Bilal , John M. Cioffi

Sparse random mode decomposition (SRMD) is a novel algorithm that constructs a random time-frequency feature space to sparsely approximate spectrograms, effectively separating modes. However, it fails to distinguish adjacent or overlapped…

信号处理 · 电气工程与系统科学 2025-01-28 Chen Luo , Tao Chen , Lei Xie , Hongye Su

Neural Radiance Fields (NeRF) has demonstrated remarkable 3D reconstruction capabilities with dense view images. However, its performance significantly deteriorates under sparse view settings. We observe that learning the 3D consistency of…

计算机视觉与模式识别 · 计算机科学 2023-05-19 Shoukang Hu , Kaichen Zhou , Kaiyu Li , Longhui Yu , Lanqing Hong , Tianyang Hu , Zhenguo Li , Gim Hee Lee , Ziwei Liu

The Terahertz band is envisioned to meet the demanding 100 Gbps data rates for 6G wireless communications. Aiming at combating the distance limitation problem with low hardware-cost, ultra-massive MIMO with hybrid beamforming is promising.…

信息论 · 计算机科学 2021-06-11 Yuhang Chen , Longfei Yan , Chong Han

Fifth-generation (5G) cellular systems are likely to operate in the centimeter-wave (3-30 GHz) and millimeter-wave (30-300 GHz) frequency bands, where a vast amount of underutilized bandwidth exists world-wide. To assist in the research and…

信号处理 · 电气工程与系统科学 2020-12-02 Ahmed Iyanda Sulyman , Abdulmalik Alwarafy , George R. MacCartney , Theodore S. Rappaport , Abdulhameed Alsanie

Accurate and high-resolution precipitation nowcasting from radar echo sequences is crucial for disaster mitigation and economic planning, yet it remains a significant challenge. Key difficulties include modeling complex multi-scale…

计算机视觉与模式识别 · 计算机科学 2026-04-20 Wenjie Luo , Chuanhu Deng , Chaorong Li , Rongyao Deng , Qiang Yang

Neural Radiance Fields (NeRF) have garnered considerable attention as a paradigm for novel view synthesis by learning scene representations from discrete observations. Nevertheless, NeRF exhibit pronounced performance degradation when…

计算机视觉与模式识别 · 计算机科学 2024-01-23 Zelin Gao , Weichen Dai , Yu Zhang

Establishing consistent and dense correspondences across multiple images is crucial for Structure from Motion (SfM) systems. Significant view changes, such as air-to-ground with very sparse view overlap, pose an even greater challenge to…

计算机视觉与模式识别 · 计算机科学 2025-05-14 Gonglin Chen , Jinsen Wu , Haiwei Chen , Wenbin Teng , Zhiyuan Gao , Andrew Feng , Rongjun Qin , Yajie Zhao

Semantic-aware 3D scene reconstruction is essential for autonomous robots to perform complex interactions. Semantic SLAM, an online approach, integrates pose tracking, geometric reconstruction, and semantic mapping into a unified framework,…

机器人学 · 计算机科学 2025-05-20 Zuxing Lu , Xin Yuan , Shaowen Yang , Jingyu Liu , Changyin Sun

Robust matching of side-scan sonar imagery remains a fundamental challenge in seafloor mapping due to view-dependent backscatter, shadows, and geometric distortion. This paper proposes a novel matching framework that combines physical…

仪器与探测器 · 物理学 2025-11-24 Can Lei , Hayat Rajani , Nuno Gracias , Rafael Garcia , Huigang Wang

We study wireless collaborative machine learning (ML), where mobile edge devices, each with its own dataset, carry out distributed stochastic gradient descent (DSGD) over-the-air with the help of a wireless access point acting as the…

信息论 · 计算机科学 2019-07-10 Mohammad Mohammadi Amiri , Tolga M. Duman , Deniz Gunduz

In this study, a novel transmission scheme is proposed to serve radar-sensing and communication objectives at the same time and allocated bandwidth. The proposed transmitted frame non-orthogonally superimposes two different waveforms, which…

信号处理 · 电气工程与系统科学 2020-07-14 Mehmet Mert Sahin , Huseyin Arslan

Future automation and control units for advanced driver assistance systems (ADAS) will exchange sensor and kinematic data with nearby vehicles using wireless communication links to improve traffic safety. In this paper we present an…

信号处理 · 电气工程与系统科学 2023-08-09 Anja Dakić , Markus Hofer , Benjamin Rainer , Stefan Zelenbaba , Laura Bernadó , Thomas Zemen

We consider a fading channel in which a multi-antenna transmitter communicates with a multi-antenna receiver through a reconfigurable intelligent surface (RIS) that is made of $N$ reconfigurable passive scatterers impaired by phase noise.…

信息论 · 计算机科学 2020-05-18 Xuewen Qian , Marco Di Renzo , Jiang Liu , Abla Kammoun , Mohamed-Slim Alouini
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