Results 41 to 50 of about 3,116,576 (279)

Evolutionary Artificial Intelligence Algorithm for Optimizing Step Phase Detection Based on Foot-Mounted Triaxial Accelerometer Data

open access: yesПриборы и методы измерений
The aim of this study was to develop and experimentally validate an algorithm for automatic selection of filter frequency characteristics and detection threshold in order to enhance the accuracy and reliability of gait phase detection.
P. A. Khmarskiy
doaj   +1 more source

Research on Six-Axis Sensor-Based Step-Counting Algorithm for Grazing Sheep

open access: yesSensors, 2023
Step counting is an effective method to assess the activity level of grazing sheep. However, existing step-counting algorithms have limited adaptability to sheep walking patterns and fail to eliminate false step counts caused by abnormal behaviors ...
Chengxiang Jiang   +6 more
doaj   +1 more source

Morphological detection based on size and contrast criteria. Application to cells detection [PDF]

open access: yes, 1992
This paper deals with a detection algorithm relying on size and contrast criteria. It is suitable for a large range of applications where a priori information about the size and the contrast of the objects to detect is available.
Gasull Llampallas, Antoni   +3 more
core   +1 more source

Context-assisted personalized pedestrian dead reckoning localization with a smartphone

open access: yesGeo-spatial Information Science
Pedestrian Dead Reckoning (PDR) plays an important role in multi-sensor fusion of indoor positioning due to its autonomy and continuity advantages. The robustness of PDR significantly impacts indoor positioning accuracy, but various pedestrians and ...
Gege Huang   +4 more
doaj   +1 more source

CHEOPS performance for exomoons: The detectability of exomoons by using optimal decision algorithm [PDF]

open access: yes, 2015
Many attempts have already been made for detecting exomoons around transiting exoplanets but the first confirmed discovery is still pending. The experience that have been gathered so far allow us to better optimize future space telescopes for this ...
Benz, W.   +4 more
core   +4 more sources

GraFIX: a semiautomatic approach for parsing low- and high-quality eye-tracking data [PDF]

open access: yes, 2014
Fixation durations (FD) have been used widely as a measurement of information processing and attention. However, issues like data quality can seriously influence the accuracy of the fixation detection methods and, thus, affect the validity of our results
Johnson, Mark H.   +2 more
core   +2 more sources

Selective Refinement Network for High Performance Face Detection

open access: yes, 2018
High performance face detection remains a very challenging problem, especially when there exists many tiny faces. This paper presents a novel single-shot face detector, named Selective Refinement Network (SRN), which introduces novel two-step ...
Chi, Cheng   +5 more
core   +1 more source

Deepfake Detection: Current Challenges and Next Steps [PDF]

open access: yes2020 IEEE International Conference on Multimedia & Expo Workshops (ICMEW), 2020
High quality fake videos and audios generated by AI-algorithms (the deep fakes) have started to challenge the status of videos and audios as definitive evidence of events. In this paper, we highlight a few of these challenges and discuss the research opportunities in this direction.
openaire   +2 more sources

A particle filtering approach for joint detection/estimation of multipath effects on GPS measurements [PDF]

open access: yes, 2007
Multipath propagation causes major impairments to Global Positioning System (GPS) based navigation. Multipath results in biased GPS measurements, hence inaccurate position estimates.
Calmettes, Vincent   +2 more
core   +4 more sources

LSS-RM: Using Multi-Mounted Devices to Construct a Lightweight Site-Survey Radio Map for WiFi Positioning

open access: yesMicromachines, 2018
A WiFi-received signal strength index (RSSI) fingerprinting-based indoor positioning system (WiFi-RSSI IPS) is widely studied due to advantages of low cost and high accuracy, especially in a complex indoor environment where performance of the ranging ...
Wei Yang   +6 more
doaj   +1 more source

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