Results 41 to 50 of about 1,303 (170)

Optical Camera Communications and Machine Learning for Indoor Visible Light Positioning

open access: yesU.Porto Journal of Engineering, 2023
The potential of VLP is increasing with the rise of indoor mobile machine applications. In this paper, a 3D indoor VLP system based on machine learning and optical camera communications is presented.
Celso Pereira
doaj   +1 more source

Geometric Models of Rolling-Shutter Cameras

open access: yesCoRR, 2005
Cameras with rolling shutters are becoming more common as low-power, low-cost CMOS sensors are being used more frequently in cameras. The rolling shutter means that not all scanlines are exposed over the same time interval. The effects of a rolling shutter are noticeable when either the camera or objects in the scene are moving and can lead to ...
Marci Meingast   +2 more
openaire   +2 more sources

Compressive temporal imaging using a rolling shutter camera array

open access: yesOptics Express, 2021
In this work, we present a novel camera array that exploits the electronic rolling shutter to achieve high speed compressive temporal imaging. Traditional compressive temporal imaging makes use of mechanical coded apertures, despite implementation and calibration challenges. Instead, we propose to model the inherent spatial and temporal coding provided
Felipe Guzmán, Pablo Meza, Esteban Vera
openaire   +2 more sources

Order-One Rolling Shutter Cameras

open access: yes2025 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)
Rolling shutter (RS) cameras dominate consumer and smartphone markets. Several methods for computing the absolute pose of RS cameras have appeared in the last 20 years, but the relative pose problem has not been fully solved yet. We provide a unified theory for the important class of order-one rolling shutter (RS$_1$) cameras.
Hahn, Marvin Anas   +3 more
openaire   +3 more sources

High-Speed Transmission Based on Grid-Patterned Data Images in Display-Camera Visible Light Communication

open access: yesIEEE Photonics Journal
This study focuses on visible light communication using a high-speed display and rolling shutter camera. In conventional methods, data are arranged in vertical stripes, but the low transmission rate is a critical challenge.
Chieri Okawa   +2 more
doaj   +1 more source

A Novel Ranging Technique Based on Optical Camera Communications and Time Difference of Arrival

open access: yesApplied Sciences, 2019
In this work, a new Time Difference of Arrival (TDoA) scheme for distance measurement based on Optical Camera Communication (OCC) systems is proposed.
Jose Rabadan   +4 more
doaj   +1 more source

Rolling Shutter Camera Relative Pose: Generalized Epipolar Geometry [PDF]

open access: yes2016 IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2016
The vast majority of modern consumer-grade cameras employ a rolling shutter mechanism. In dynamic geometric computer vision applications such as visual SLAM, the so-called rolling shutter effect therefore needs to be properly taken into account. A dedicated relative pose solver appears to be the first problem to solve, as it is of eminent importance to
Yuchao Dai, Hongdong Li, Laurent Kneip
openaire   +2 more sources

Rolling Shutter Camera Synchronization with Sub-millisecond Accuracy

open access: yesProceedings of the 12th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications, 2017
A simple method for synchronization of video streams with a precision better than one millisecond is proposed. The method is applicable to any number of rolling shutter cameras and when a few photographic flashes or other abrupt lighting changes are present in the video.
Matej Smíd, Jiri Matas
openaire   +2 more sources

Establishment of a method for correcting the image coordinates of a target captured by a robotic fish with rolling motion

open access: yesNihon Kikai Gakkai ronbunshu, 2021
A robotic fish is ideal for an ecological survey of underwater life, because underwater animals cannot easily notice the robot. However, when a robotic fish swings its body to swim, it makes a rolling motion due to movements of the center of gravity and ...
Naoki KAWASAKI   +2 more
doaj   +1 more source

Magnetic Field Control Using an Electromagnetic Actuation System with Combined Air‐Core and Metal‐Core Coils

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 3, March 2025.
An electromagnetic manipulation system enhances magnetic field strength in the Z‐direction for 3D control of microrobots and nanoparticles. Featuring eight metal‐core coils and two air‐core coils arranged hemispherically, it ensures unimpeded workspace access and integrates imaging tools.
Nader Latifi Gharamaleki   +4 more
wiley   +1 more source

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