Results 41 to 50 of about 2,753 (157)

The Optical Bar Code Detection Method Based on Optical Camera Communication Using Discrete Fourier Transform

IEEE Access, 2020
Optical camera communication (OCC) traditionally uses the bright and dark stripes of rolling shutter pattern captured by the complementary metal-oxide-semiconductor (CMOS) image-sensor to realize communication.
Yuchen Xiao, Weipeng Guan, Shangsheng Wen, Jingyi Li, Zeyang Li, Manxi Liu   +5 more
doaj   +1 more source

Cryptic Ontogenetic Changes in the Ventral Coloration of a Color Polymorphic Wall Lizard (Podarcis muralis)

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, Volume 345, Issue 1, Page 39-57, January 2026.
Wall lizards' ventral coloration undergoes cryptic ontogenetic color changes invisible without UV vision. We tracked wall lizards from hatching to one year of age. Spectrophotometry and visual modeling reveal that juveniles show a distinct UV‐enhanced white coloration that changes differently across sexes and body regions.
Javier Abalos, Alicia Bartolomé, Guillem Pérez i de Lanuza, Fabien Aubret, Enrique Font   +4 more
wiley   +1 more source

MAC Protocol Design for Optical Wireless Body‐Area Networks: Latency, Energy Efficiency and Scalability Analysis

IET Networks, Volume 15, Issue 1, January/December 2026.
This work investigates suitable MAC protocols for medical optical wireless body‐area networks (WBANs), focussing on multiple access management. Using realistic channel models, we evaluate the network performance in terms of energy efficiency, quality‐of‐service and scalability for different IEEE protocols, for both intra‐ and extra‐WBAN connectivity in
Christos Giachoudis, Mohammad‐Ali Khalighi, Stanislav Zvanovec, Vasilis K. Papanikolaou, Sotiris A. Tegos, George K. Karagiannidis   +5 more
wiley   +1 more source

CRAVEN: A Camera–Radar Attention‐Based Voxel Encoding Network for 3D Object Detection

IET Radar, Sonar &Navigation, Volume 20, Issue 1, January/December 2026.
(1) A multiscale aggregation modelling strategy is introduced to effectively capture local geometric structures of sparse radar point clouds. (2) An attention‐based pillar representation framework is proposed for 4D mmWave radar point clouds, replacing heuristic voxel aggregation with learnable attention‐based modelling to significantly enhance feature
Dong Wang, Junsheng Huang, Zhe Zhang
wiley   +1 more source

Radio Scintillation and Gravity Wave Characteristics in the Venusian Atmosphere: Insights From Akatsuki Radio Occultation

Journal of Geophysical Research: Planets, Volume 130, Issue 10, October 2025.
Abstract We investigated the relationship between radio scintillations—short‐term fluctuations in radio signal intensity—and temperature fluctuations, both observed in vertical profiles from JAXA's Akatsuki radio occultation. Our results indicate that the radio scintillations and the temperature fluctuations are each strongly related to static ...
Katsuyuki Noguchi, Aika Hagino, Hiroki Ando, Takeshi Imamura, Silvia Tellmann, Martin Pätzold   +5 more
wiley   +1 more source

Non-Line-of-Sight Optical Camera Communication in a Heterogeneous Reflective Background

IEEE Photonics Journal, 2019
In the last few years, optical camera communication (OCC) has benefited from built-in CMOS image sensors in smart devices. OCC is now considered a candidate for incorporation into IEEE 802.15.7r1. A major study on OCC was conducted for line-of-sight (LOS)
Jenn-Kaie Lain, Fu-Cheng Jhan, Zheng-Dao Yang   +2 more
doaj   +1 more source

Prediction of Speech Impairment in Patients Treated for Oral or Oropharyngeal Cancer Using Automatic Speech Analysis

International Journal of Language &Communication Disorders, Volume 60, Issue 5, September/October 2025.
ABSTRACT Background Perceptual evaluation of speech disorders produces scores that poorly predict the consequences of speech impairment on the communication abilities of patients treated for oral/oropharyngeal cancer. This may be mitigated by automatic speech analysis.
Mathieu Balaguer, Julien Pinquier, Jérôme Farinas, Virginie Woisard   +3 more
wiley   +1 more source

Stereopsis–Occlusion Conflicts Impair Visual Performance in Augmented Reality

Journal of the Society for Information Display, Volume 33, Issue 8, Page 937-947, August 2025.
Stereopsis‐occlusion conflicts occur when AR augmentations are rendered behind real‐world physical objects without handling occlusion. This study shows that these conflicts can be more detrimental to visual performance than vergence‐accommodation conflicts, especially for augmentations of far objects.
Daniel P. Spiegel, Ian M. Erkelens
wiley   +1 more source

Experimental DCO-OFDM Optical Camera Communication Systems With a Commercial Smartphone Camera

IEEE Photonics Journal, 2019
Modern handheld mobile devices are equipped with a complementary metal-oxide-semiconductor (CMOS) image sensor. These image sensors are capable of perceiving intensity changes in optically modulated signals, driving the rapid development of optical ...
Jenn-Kaie Lain, Zheng-Dao Yang, Ting-Wei Xu   +2 more
doaj   +1 more source

Phenobot: An Autodigital Modeling System for in situ Phenotyping in Horticulture

Advanced Intelligent Systems, Volume 7, Issue 6, June 2025.
This study introduces a robotic phenotyping system for precision agriculture, integrating environmental understanding, motion planning, and in situ plant phenotyping. The system autonomously navigates through real‐world agricultural environments, collects high‐quality plant data, and reconstructs accurate 3D plant models. Results demonstrate the system'
Kewei Hu, Yaoqiang Pan, Tianhao Liu, Hugh Zhou, Chao Chen, Hanwen Kang   +5 more
wiley   +1 more source