Results 231 to 240 of about 241,679 (299)

Optical Camera Communication: Motion over Camera

IEEE Communications Magazine, 2017
OCC is a pragmatic version of VLC based on a smart device camera that allows easier implementation of various services in smart devices. This article presents a flexible and novel motion detection scheme over a smart device camera in OCC. The motion detection is conducted in conjunction with a static downlink optical camera communication, where a ...
Shivani Teli, Willy Anugrah Cahyadi, Yeon Ho Chung   +2 more
openaire   +1 more source

Non-line-of-sight optical camera communications based on CPWM and a convolutional neural network.

Applied Optics, 2023
Non-line-of-sight (NLOS) optical camera communications (OCC) exhibit greater link availability and mobility than line-of-sight links, which are more susceptible to blocking and shadowing. In this work, we propose an NLOS OCC system, where the data signal
Xiangyu Wan, Bangjiang Lin, Zabih Ghassemlooy, Tianming Huang, Jiabin Luo, Yongqi Ding   +5 more
semanticscholar   +1 more source

Radiometric and geometric camera model for Optical Camera Communications

2015 Seventh International Conference on Ubiquitous and Future Networks, 2015
When an object projected on a camera, the shape of the projected object image is governed by the relative position and orientation between object and camera. On the other hand, object radiance, viewing angle and distance at the time of taking picture determine the image brightness of an object.
Md. Shareef Ifthekhar, M. Arif Hossain, C. Hyun Hong, Yeong Min Jang   +3 more
openaire   +1 more source

Experimental Evaluation of LED-Based Wearable Transmitter for Optical Camera Communications Systems

International Conference on Telecommunications, 2023
In this paper, we experimentally demonstrate an optical camera communications (OCC) system for wearable light-emitting diode (LED) as the transmitter. Wearable devices are powerful tools for supporting Internet of Things (IoT) systems because of their ...
E. Niarchou, V. Matus, J. Rabadán, V. Guerra, R. P. Jiménez   +4 more
semanticscholar   +1 more source

Optical Camera Communications

2016
Visible light communications (VLC) has been evolving at a much faster rate because of the development of high energy efficient white light emitting diodes (LED). For the first time, we see a unique device which offers triple functionalities of illumination, data communications and indoor localization, thus opening up the opportunities for applications ...
Zabih Ghassemlooy, Pengfei Luo, Stanislav Zvanovec   +2 more
openaire   +1 more source

The Impact of Camera Parameters on Optical Camera Communication

2019 International Conference on Artificial Intelligence in Information and Communication (ICAIIC), 2019
Unlike visible light communication (VLC) using photo detector, optical camera communication (OCC) employs an image sensor as the receiver. In this paper, we discuss the parameter of rolling shutter camera (focal length, FOV, rolling rate, frame rate) which impact to the data rate of optical camera communication system.
Huy Nguyen, Minh Duc Thieu, Tung Lam Pham, Hoan Nguyen, Yeong Min Jang   +4 more
openaire   +1 more source

Experimental Demonstration of 4-level PAM for Sub-pixel Optical Camera Communications

2023 South American Conference On Visible Light Communications (SACVLC), 2023
As Internet of Things (IoT) technologies proliferate, a scarcity of radio frequency (RF) spectrum resources becomes apparent. One promising solution lies in Visible Light Communication (VLC), which offers a novel approach to wireless data transmission ...
C. A. Hernández-Morales, J. M. Luna-Rivera, V. Matus, J. Rabadán, J. Rufo, V. Guerra, R. Pérez-Jiménez   +6 more
semanticscholar   +1 more source

Analysis of Optical Camera Communications for Terminal Jiggle With Quality of Service Guarantees

Journal of Lightwave Technology, 2023
Although Optical Camera Communications (OCC) has carved out a space in sixth-generation(6G) communications, building a theoretical analysis model for OCC remains an open question. Hence, we propose the analytical models for OCC systematic evaluation with
S. Chen, Xuefen Chi
semanticscholar   +1 more source

Synchronization issue for optical camera communications

2015 Seventh International Conference on Ubiquitous and Future Networks, 2015
When mentioning about camera, we just think about the picture characteristics such the quality, the resolution. Besides, it will be also the promising technique for communication issue which can be called as optical wireless communication (OWC). The research about OWC has been pushed from these years.
Nam-Tuan Le, Thithanhnhan Le, Trang Nguyen, Yeong Min Jang   +3 more
openaire   +1 more source

Dimmable Optical Camera Communications With WDM Using RGB and Infrared LEDs

IEEE Photonics Technology Letters
We propose an optical camera communication (OCC) system with dimming control, employing wavelength division multiplexing (WDM) with RGB and infrared (IR) light sources.
Hai Huang, Xiaodi You, Jin Shi, Jian Chen, Changyuan Yu, Mingyi Gao, Gangxiang Shen   +6 more
semanticscholar   +1 more source