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We propose the zero-shot Vision-and-Language Navigation with Collision Mitigation (VLN-CM), which takes these considerations. VLN-CM is composed of four modules and predicts the direction and distance of the next movement at each step. We…

Computer Vision and Pattern Recognition · Computer Science 2024-10-24 Seongjun Jeong , Gi-Cheon Kang , Joochan Kim , Byoung-Tak Zhang

This paper presents a tunable liquid lens (TLL)-assisted indoor mobile visible light communication system. To mitigate performance degradation caused by user mobility and random receiver orientation, an electrowetting cuboid TLL is used at…

Signal Processing · Electrical Eng. & Systems 2025-05-21 Kapila W. S. Palitharathna , Constantinos Psomas , Ioannis Krikidis

Recent development of the fifth-generation (5G) of cellular networks has led to their deployment worldwide. As part of the implementation, one of the challenges that must be addressed is the skip-zone problem, which occurs when objects…

Signal Processing · Electrical Eng. & Systems 2022-11-30 Sylvester Aboagye , Alain R. Ndjiongue , Telex M. N. Ngatched , Octavia Dobre , H. Vincent Poor

We seek to predict the 6 degree-of-freedom (6DoF) pose of a query photograph with respect to a large indoor 3D map. The contributions of this work are three-fold. First, we develop a new large-scale visual localization method targeted for…

Computer Vision and Pattern Recognition · Computer Science 2018-04-10 Hajime Taira , Masatoshi Okutomi , Torsten Sattler , Mircea Cimpoi , Marc Pollefeys , Josef Sivic , Tomas Pajdla , Akihiko Torii

This work is concerned with camera pose estimation from correspondences of 3D/2D lines, i. e. with the Perspective-n-Line (PnL) problem. We focus on large line sets, which can be efficiently solved by methods using linear formulation of…

Computer Vision and Pattern Recognition · Computer Science 2017-05-16 Bronislav Přibyl , Pavel Zemčík , Martin Čadík

Accurate indoor positioning for wireless communication systems represents an important step towards enhanced reliability and security, which are crucial aspects for realizing Industry 4.0. In this context, this paper presents an…

Signal Processing · Electrical Eng. & Systems 2023-06-07 Ivo Bizon , Zhongju Li , Ahmad Nimr , Marwa Chafii , Gerhard P. Fettweis

Accurate LiDAR-Camera (LC) calibration is challenging but crucial for autonomous systems and robotics. In this paper, we propose two single-shot and target-less algorithms to estimate the calibration parameters between LiDAR and camera…

Robotics · Computer Science 2026-01-05 Yanyu Zhang , Jie Xu , Wei Ren

Localization is an indispensable component of a robot's autonomy stack that enables it to determine where it is in the environment, essentially making it a precursor for any action execution or planning. Although convolutional neural…

Robotics · Computer Science 2018-03-13 Abhinav Valada , Noha Radwan , Wolfram Burgard

The forthcoming Fifth Generation (5G) era raises the expectation for ubiquitous wireless connectivity to enhance human experiences in information and knowledge sharing as well as in entertainment and social interactions. The promising…

Information Theory · Computer Science 2017-09-07 Rong Zhang

Large visual language models (LVLMs) have demonstrated impressive performance in coarse-grained geo-localization at the country or city level, but they struggle with fine-grained street-level localization within urban areas. In this paper,…

Computer Vision and Pattern Recognition · Computer Science 2025-08-15 Shixiong Xu , Chenghao Zhang , Lubin Fan , Yuan Zhou , Bin Fan , Shiming Xiang , Gaofeng Meng , Jieping Ye

Visible light communication (VLC) technology was introduced as a key enabler for the next generation of wireless networks, mainly thanks to its simple and low-cost implementation. However, several challenges prohibit the realization of the…

Artificial Intelligence · Computer Science 2021-10-08 Shimaa Naser , Lina Bariah , Sami Muhaidat , Mahmoud Al-Qutayri , Ernesto Damiani , Merouane Debbah , Paschalis C. Sofotasios

For indoor settings, we investigate the impact of location on the spectral distribution of the received light, i.e., the intensity of light for different wavelengths. Our investigations confirm that even under the same light source,…

Human-Computer Interaction · Computer Science 2022-06-30 Yanxiang Wang , Jiawei Hu , Hong Jia , Wen Hu , Mahbub Hassan , Ashraf Uddin , Brano Kusy , Moustafa Youssef

We propose a novel method for aerial visual localization over low Level-of-Detail (LoD) city models. Previous wireframe-alignment-based method LoD-Loc has shown promising localization results leveraging LoD models. However, LoD-Loc mainly…

Computer Vision and Pattern Recognition · Computer Science 2025-07-02 Juelin Zhu , Shuaibang Peng , Long Wang , Hanlin Tan , Yu Liu , Maojun Zhang , Shen Yan

In this paper, we introduce an uplink optical wireless positioning system for indoor applications. This technique uses fingerprints based on the indoor optical wireless channel impulse response for localization. Exploiting the line of sight…

Information Theory · Computer Science 2020-05-06 Hamid Hosseinianfar , Maite Brandt-Pearce

Providing high data rates is one of the big concerns in visible light communication (VLC) systems. This paper introduces a data centre design that use a VLC system for downlink communication. In this work, RYGB laser diodes (LD) are used as…

Signal Processing · Electrical Eng. & Systems 2019-03-30 Osama Zwaid Alsulami , Mohamed O. I. Musa , Mohammed T. Alresheedi , Jaafar M. H. Elmirghani

Visible Light Communications (VLC) has been studied thoroughly in recent years as an alternative or complementary technology to radio frequency communications. The reliability of VLC channels highly depends on the availability and alignment…

Emerging Technologies · Computer Science 2017-10-27 Yusuf Said Eroglu , Yavuz Yapici , Ismail Guvenc

Vision-Language Navigation (VLN) requires the agent to follow language instructions to reach a target position. A key factor for successful navigation is to align the landmarks implied in the instruction with diverse visual observations.…

Computer Vision and Pattern Recognition · Computer Science 2024-06-06 Bingqian Lin , Yunshuang Nie , Ziming Wei , Yi Zhu , Hang Xu , Shikui Ma , Jianzhuang Liu , Xiaodan Liang

Pedestrian dead-reckoning (PDR) is a potential indoor localization technology that obtains location estimation with the inertial measurement unit (IMU). However, one of its most significant drawbacks is the accumulation of its measurement…

Signal Processing · Electrical Eng. & Systems 2023-01-10 Shangsheng Wen , Ziyang Ge , Danlan Yuan , Yingcong Chen , Xuecong Fang

We propose a real-time method to estimate spatiallyvarying indoor lighting from a single RGB image. Given an image and a 2D location in that image, our CNN estimates a 5th order spherical harmonic representation of the lighting at the given…

Computer Vision and Pattern Recognition · Computer Science 2019-06-11 Mathieu Garon , Kalyan Sunkavalli , Sunil Hadap , Nathan Carr , Jean-François Lalonde

Visible light communication (VLC) could provide short-range optical wireless communication together with illumination using LED lighting. However, conventional forward error correction (FEC) codes for reliable communication do not have the…

Information Theory · Computer Science 2018-10-18 Junbin Fang , Zhen Che , Xiaolong Yu , Zhe Chen , Zoe L. Jiang , Siu-Ming Yiu , Kui Ren , Xiaoqing Tan