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The "near-field" propagation modeling of wireless channels is necessary to support sixth-generation (6G) technologies, such as intelligent reflecting surface (IRS), that are enabled by large aperture antennas and higher frequency carriers.…

信息论 · 计算机科学 2024-03-12 Navneet Agrawal , Ehsan Tohidi , Renato L. G. Cavalcante , Sławomir Stańczak

The raw depth images captured by RGB-D cameras using Time-of-Flight (TOF) or structured light often suffer from incomplete depth values due to weak reflections, boundary shadows, and artifacts, which limit their applications in downstream…

计算机视觉与模式识别 · 计算机科学 2025-11-11 Zihui Zhao , Yifei Zhang , Zheng Wang , Yang Li , Kui Jiang , Zihan Geng , Chia-Wen Lin

Embodied intelligence requires precise reconstruction and rendering to simulate large-scale real-world data. Although 3D Gaussian Splatting (3DGS) has recently demonstrated high-quality results with real-time performance, it still faces…

计算机视觉与模式识别 · 计算机科学 2025-04-02 Haodong Xiang , Xinghui Li , Kai Cheng , Xiansong Lai , Wanting Zhang , Zhichao Liao , Long Zeng , Xueping Liu

Integrating efficient connectivity, positioning and sensing functionalities into 5G New Radio (NR) and beyond mobile cellular systems is one timely research paradigm, especially at mm-wave and sub-THz bands. In this article, we address the…

We propose $S^3$LAM, a novel RGB-D SLAM system that leverages 2D surfel splatting to achieve highly accurate geometric representations for simultaneous tracking and mapping. Unlike existing 3DGS-based SLAM approaches that rely on 3D…

计算机视觉与模式识别 · 计算机科学 2025-07-29 Ruoyu Fan , Yuhui Wen , Jiajia Dai , Tao Zhang , Long Zeng , Yong-jin Liu

Recent advances in computer graphics and computer vision have found successful application of deep neural network models for 3D shapes based on signed distance functions (SDFs) that are useful for shape representation, retrieval, and…

计算机视觉与模式识别 · 计算机科学 2020-10-27 Oladapo Afolabi , Allen Y. Yang , S. Shankar Sastry

Recent advancements in 3D Gaussian Splatting (3DGS) and Neural Radiance Fields (NeRF) have achieved impressive results in real-time 3D reconstruction and novel view synthesis. However, these methods struggle in large-scale, unconstrained…

计算机视觉与模式识别 · 计算机科学 2025-04-03 Niluthpol Chowdhury Mithun , Tuan Pham , Qiao Wang , Ben Southall , Kshitij Minhas , Bogdan Matei , Stephan Mandt , Supun Samarasekera , Rakesh Kumar

In the evolving wireless communications landscape, addressing the challenges of multipath fading and high mobility remains paramount. This paper introduces the Unified Sequency-Frequency Multiplexing (USFM) framework, a pioneering…

信号处理 · 电气工程与系统科学 2024-06-25 Zahir Alsulaimawi

Few-Shot Medical Image Segmentation (FSMIS) aims to delineate novel anatomical targets from one or a few annotated support images, addressing the annotation scarcity in medical imaging. Notwithstanding recent advancements, current…

计算机视觉与模式识别 · 计算机科学 2026-05-19 Penghao Jia , Zhiyong Huang , Mingyang Hou , Zhi Yu , Shuai Miao , Jiahong Wang , Yan Yan

We present MS-Splatting -- a multi-spectral 3D Gaussian Splatting (3DGS) framework that is able to generate multi-view consistent novel views from images of multiple, independent cameras with different spectral domains. In contrast to…

图形学 · 计算机科学 2026-02-17 Lukas Meyer , Josef Grün , Maximilian Weiherer , Bernhard Egger , Marc Stamminger , Linus Franke

Recently, Gaussian splatting has emerged as a strong alternative to NeRF, demonstrating impressive 3D modeling capabilities while requiring only a fraction of the training and rendering time. In this paper, we show how the standard Gaussian…

计算机视觉与模式识别 · 计算机科学 2025-03-25 Luca Savant Aira , Gabriele Facciolo , Thibaud Ehret

Two critical approaches have emerged in the literature for the successful realization of 6G wireless networks: the coexistence of multiple waveforms and the adoption of non-orthogonal multiple access. These strategies hold transformative…

信号处理 · 电气工程与系统科学 2025-05-27 Kenza Abela , Shaima Abidrabbu , Ayoub Ammar Boudjelal , Huseyin Arslan

Full dimension (FD) multiple-input multiple-output (MIMO) technology has attracted substantial research attention from both wireless industry and academia in the last few years as a promising technique for next-generation wireless…

信息论 · 计算机科学 2019-06-07 Qurrat-Ul-Ain Nadeem , Abla Kammoun , Mohamed-Slim Alouini

We present an approach for spatially-consistent semi-deterministic Air-to-Ground (A2G) channel modeling in Unmanned Aerial Vehicle-assisted networks. We use efficient 3D building shadow projections to determine Line-of-Sight (LOS) regions,…

信号处理 · 电气工程与系统科学 2025-11-20 Evgenii Vinogradov , Aymen Fakhreddine , Abdul Saboor , Sergi Abadal , Sofie Pollin

Future mobile communications systems are likely to be very different to those of today with new service innovations driven by increasing data traffic demand, increasing processing power of smart devices and new innovative applications. To…

Massive multiple-input-multiple-output (MIMO) transmission is a promising technology to improve the capacity and reliability of wireless systems. However, the number of antennas that can be equipped at a base station (BS) is limited by the…

信息论 · 计算机科学 2018-05-02 Qurrat-Ul-Ain Nadeem , Abla Kammoun , Mérouane Debbah , and Mohamed-Slim Alouini

Multi-antenna techniques capable of exploiting the elevation dimension are anticipated to be an important air-interface enhancement targeted to handle the expected growth in mobile traffic. In order to enable the development and evaluation…

We present a novel 3D shape completion framework that unifies multimodal conditioning, leveraging both 2D images and 3D partial scans through a latent diffusion model. Shapes are represented as Truncated Signed Distance Functions (TSDFs)…

计算机视觉与模式识别 · 计算机科学 2025-09-03 Simon Schaefer , Juan D. Galvis , Xingxing Zuo , Stefan Leutengger

In contrast to the prevalent assumption of rich multipath in information theoretic analysis of wireless channels, physical channels exhibit sparse multipath, especially at large bandwidths. We propose a model for sparse multipath fading…

信息论 · 计算机科学 2007-07-13 Gautham Hariharan , Akbar Sayeed

This paper examines the efficiency of spatial and frequency dimensions in serving multiple users in the downlink of a small cell wireless network with randomly deployed access points. For this purpose, the stochastic geometry framework is…

信息论 · 计算机科学 2014-02-18 Stelios Stefanatos , Angeliki Alexiou