Results 191 to 200 of about 15,319 (228)

Fractal Modulation Scheme for Optical Camera Communication

2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP), 2022
144
Antonio Mederos-Barrera, Carlos Guerra-Yánez, Cristo Jurado-Verdu, Victor Guerra, José Rabadán, Rafael Pérez Jiménez, Stanislav Zvánovec   +6 more
openaire   +2 more sources

Near-Infrared based Optical Camera Communications

2022 13th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP), 2022
We report, for the first time in the literature, an optical camera communications (OCC) link leveraging a near-infrared band at a wavelength of 850 nm that is visible to a standard camera and undetectable by the human eye. An experimental test-bed is developed and evaluated for the proposed system.
Othman Isam Younus, Eleni Niarchou, Shivani Rajendra Teli, Zabih Ghassemlooy, Stanislav Zvanovec, Hoa Le Minh   +5 more
openaire   +2 more sources

The Impact of Camera Parameters on the Performance of V2V Optical Camera Communications

2020 12th International Symposium on Communication Systems, Networks and Digital Signal Processing (CSNDSP), 2020
This paper investigates the impact of camera parameters on the performance of camera-based vehicle-to-vehicle optical communications system. Here, we consider the light source radiation pattern, atmospheric attenuation and camera noise sources and investigate the impact of the camera’s exposure time, lens f-number, image sensor size and its resolution ...
Negar Masjedi Esfahani, Asghar Gholami, Negar Shirvani Kordavani, Stanislav Zvanovec, Zabih Ghassemlooy   +4 more
openaire   +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, Mohammad Arif Hossain, Chang Hyun Hong, Yeong Min Jang   +3 more
openaire   +1 more source

A Simplified System Model for Optical Camera Communication

2021 IEEE/CIC International Conference on Communications in China (ICCC), 2021
Data rate and communication distance are two important criteria for measuring the performance of optical camera communication (OCC) systems. Intensive researches have been made to find possible solutions to improve these two performance indicators. However, most existing literature either provides solutions which closely related to the experimental ...
Anqi Liu, Wenxiao Shi, Wei Liu 0089, Zhuo Wang 0009   +3 more
openaire   +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

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

Practical design of Screen-to-Camera based Optical Camera Communication

2015 International Conference on Information Networking (ICOIN), 2015
This paper introduces the Optical Camera Communication (OCC) based on Computer Vision. The practical issues of implementation of the asynchronous communication based Screen-to-Camera are performed. The asynchronous scheme proposed by our previous work is modified to be simple, suitable and reliable in order to apply in case of heterogeneous frame rate ...
Trang Nguyen, Nam Tuan Le, Yeong Min Jang   +2 more
openaire   +1 more source

Invisible embedded techniques for optical camera communications

2017 International Conference on Information Networking (ICOIN), 2017
Optical camera communications (OCC) is a promising technology due to the development and commercialization of camera. Similarly with visible light communication (VLC), OCC will decode the signal from light source by invisibility or visibility. The invisibility technique for OCC is based on the over frequency response or less sensitive color of human ...
Nam Tuan Le, Yeong Min Jang
openaire   +1 more source

A survey of design and implementation for optical camera communication

Signal Processing: Image Communication, 2017
Visible Light Communication (VLC) has emerged as a promising technology for wireless communication owing to advantages such as bandwidth, license, coexistence and security. Additionally, it was officially standardized by IEEE 802.15.7 in 2011. However, it faces certain challenges that can be considered as grounds to develop a revised version.
Nam Tuan Le, Mohammad Arif Hossain, Yeong Min Jang   +2 more
openaire   +1 more source