Fiducial Objects: Custom Design and Evaluation [PDF]
Sensors, 2023 Camera pose estimation is vital in fields like robotics, medical imaging, and augmented reality. Fiducial markers, specifically ArUco and Apriltag, are preferred for their efficiency.
Pablo García-Ruiz +4 more
doaj +2 more sources
UCO Physical Rehabilitation: New Dataset and Study of Human Pose Estimation Methods on Physical Rehabilitation Exercises [PDF]
Sensors, 2023 Physical rehabilitation plays a crucial role in restoring motor function following injuries or surgeries. However, the challenge of overcrowded waiting lists often hampers doctors’ ability to monitor patients’ recovery progress in person.
Rafael Aguilar-Ortega +8 more
doaj +2 more sources
sSLAM: Speeded-Up Visual SLAM Mixing Artificial Markers and Temporary Keypoints [PDF]
Sensors, 2023 Environment landmarks are generally employed by visual SLAM (vSLAM) methods in the form of keypoints. However, these landmarks are unstable over time because they belong to areas that tend to change, e.g., shadows or moving objects.
Francisco J. Romero-Ramirez +4 more
doaj +2 more sources
Parallelized SLAM: Enhancing Mapping and Localization Through Concurrent Processing [PDF]
SensorsSimultaneous Localization and Mapping (SLAM) systems face high computational demands, hindering their real-time implementation on low-end computers. An approach to addressing this challenge involves offline processing, i.e., a map of the environment map ...
Francisco J. Romero-Ramirez +4 more
doaj +2 more sources
Large-Scale Indoor Camera Positioning Using Fiducial Markers [PDF]
SensorsEstimating the pose of a large set of fixed indoor cameras is a requirement for certain applications in augmented reality, autonomous navigation, video surveillance, and logistics.
Pablo García-Ruiz +4 more
doaj +2 more sources
Mining autonomous student patterns score on LMS within online higher education [PDF]
PeerJ Computer ScienceHigher education institutions actively integrate information and communication technologies through learning management systems (LMS), which are crucial for online education.
Ricardo Ordoñez-Avila +2 more
doaj +3 more sources
Mathematical Methods in the Applied Sciences, Volume 46, Issue 8, Page 9252-9267, 30 May 2023., 2023 In this article, we study the existence of solutions of a parabolic‐elliptic system of partial differential equations describing the behaviour of a biological species “ u$$ u $$” and a chemical stimulus “ v$$ v $$” in a bounded and regular domain Ω$$ \Omega $$ of ℝN$$ {\mathbb{R}}^N $$.
Silvia Sastre‐Gomez +1 more
wiley +1 more source
Rule‐based preprocessing for data stream mining using complex event processing
Expert Systems, Volume 38, Issue 8, December 2021., 2021 Abstract Data preprocessing is known to be essential to produce accurate data from which mining methods are able to extract valuable knowledge. When data constantly arrives from one or more sources, preprocessing techniques need to be adapted to efficiently handle these data streams.
Aurora Ramírez +2 more
wiley +1 more source
Capturing the non-stationarity of whole-brain dynamics underlying human brain states
NeuroImage, 2021 Brain dynamics depicts an extremely complex energy landscape that changes over time, and its characterisation is a central unsolved problem in neuroscience.
J.A. Galadí +8 more
doaj +1 more source
Existence of periodic positive solutions to nonlinear Lotka-Volterra competition systems [PDF]
Opuscula Mathematica, 2020 We investigate the existence of positive periodic solutions of a nonlinear Lotka-Volterra competition system with deviating arguments. The main tool we use to obtain our result is the Krasnoselskii fixed point theorem.
Mimia Benhadri +2 more
doaj +1 more source