Results 61 to 70 of about 5,061,025 (152)

On improving the accuracy of Visible Light Positioning system based PAPR reduction schemes

, 2020
International audienceDC-biased optical Orthogonal Frequency Division Multiplexing (DCO-OFDM)-based visible light positioning (VLP) technology along with the Received Signal Strength(RSS) positioning algorithm is widely used to achieve centimeter level ...
Shi, Dayu, Zheng, Jihong, Liu, Yourong, Aglzim, El-Hassane, Shi, Lina, Zhang, Xun, Huang, Yanqi   +6 more
core   +1 more source

A Comparison of Mobile Laser Scanning Data Acquisition Methods in Closed Forest, Open Woodland and Sub‐Alpine Woodland Ecosystems

Remote Sensing in Ecology and Conservation, EarlyView.
This study demonstrates that the mobile laser scanning (MLS) sampling density required to reliably characterise vegetation structure increases with a site's structural complexity. Applying a five‐level acquisition framework across open woodland, closed forest and sub‐alpine woodland ecosystems, we found that longer scanning paths increased the ...
Johann Tiede, Karin Reinke, Trung H. Nguyen, Simon Jones   +3 more
wiley   +1 more source

Indoor 3-Dimensional Visible Light Positioning Based on Smartphone Camera: Error Metric and LED Layout Optimization

IEEE Photonics Journal, 2022
We consider 3-dimensional (3D) visible light positioning (VLP) based on smartphone camera in an indoor scenario. Based on the positioning model in the quantized pixel-domain, we characterize the 3D normalized positioning error metric (NPEM) through the ...
Jiaojiao Xu, Nuo Huang, Chen Gong
doaj   +1 more source

World Models for Robotic Manipulation: A Survey

SmartBot, EarlyView.
World models enable robots to anticipate how candidate actions may alter object configurations, contact states, and scene geometry before physical execution. This survey examines world models for robotic manipulation as action‐conditioned predictive systems and organizes the literature according to predicted representations, interfaces between ...
Fangyuan Wang, Ziyuan Wang, Guorui Pei, Mengshi Zhang, Canxi Liang, Jun Hu, Zhongxuan Li, Jinsong Wu, Ning Han, Zeqing Zhang, Jiaming Qi, Hongmin Wu, Shiyao Zhang, Pai Zheng, Jia Pan, David Navarro‐Alarcon, Sichao Liu, Peng Zhou   +17 more
wiley   +1 more source

Tightly coupled VLP/INS integrated navigation by inclination estimation and blockage handling

Satellite Navigation
Visible Light Positioning (VLP) has emerged as a promising technology capable of delivering indoor localization with high accuracy. In VLP systems that use PhotoDiodes (PDs) as light receivers, the Received Signal Strength (RSS) is affected by the ...
Xiao Sun, Yuan Zhuang, Xiansheng Yang, Jianzhu Huai, Tianming Huang, Daquan Feng   +5 more
doaj   +1 more source

High Precision Indoor Visible Light Positioning Algorithm Based on Double LEDs Using CMOS Image Sensor

Applied Sciences, 2019
Visible Light Positioning (VLP) is widely recognized as a cost-effective solution for indoor positioning with increasing demand. However, the nonlinearity and highly complex relationship between three-dimensional world coordinate and two-dimensional ...
Weipeng Guan, Xinjie Zhang, Yuxiang Wu, Zekun Xie, Jingyi Li, Jieheng Zheng   +5 more
doaj   +1 more source

Attention Based Optimization for 3D Shape Registration

Computer Graphics Forum, EarlyView.
Abstract Transformers are sequence‐to‐sequence architectures originally designed to handle structurally rigid and order‐sensitive data, such as text and images. At their core, they exploit the attention mechanism, which is permutation‐equivariant and relies on computing token‐to‐token relationships.
A. Riva, L. Olearo, S. Melzi
wiley   +1 more source

Privacy-Preserving Cooperative Visible Light Positioning for Nonstationary Environment: A Federated Learning Perspective

, 2023
Visible light positioning (VLP) has drawn plenty of attention as a promising indoor positioning technique. However, in nonstationary environments, the performance of VLP is limited because of the highly time-varying channels.
Wei, Tiankuo, Liu, Sicong
core  

Integrated Mobile Visible Light Communication and Positioning Systems Based on Decision Feedback Channel Estimation

Photonics
Visible light communication (VLC) and visible light positioning (VLP) systems are usually designed separately to prevent mutual interference, while terminal mobility often introduces challenges that can degrade their performance.
Ruoxuan Wang, Yuzhe Sun, Zhongxu Liu, Mingyi Gao, Xiaodi You   +4 more
doaj   +1 more source

The Integration of Photodiode and Camera for Visible Light Positioning by Using Fixed-Lag Ensemble Kalman Smoother

Remote Sensing, 2019
Visible Light Positioning (VLP) has become one of the most popular positioning and navigation systems in this decade. Filter-based VLP systems can provide real-time solutions but have limited accuracy.
Yuan Zhuang, Qin Wang, You Li, Zhouzheng Gao, Bingpeng Zhou, Longning Qi, Jun Yang, Ruizhi Chen, Naser El-Sheimy   +8 more
doaj   +1 more source