Results 21 to 30 of about 722,954 (290)

Human Pose Estimation by Exploiting Spatial and Temporal Constraints in Body-Part Configurations

open access: yesIEEE Access, 2017
We present an algorithm for estimating a sequence of articulated upper-body human pose in unconstrained videos. Most previous work often fails to locate forearms in those video scenes suffering from illumination varieties, background clutter, camera ...
Qingwu Li   +4 more
doaj   +1 more source

Second-Order Semi-Global Stereo Matching Algorithm Based on Slanted Plane Iterative Optimization

open access: yesIEEE Access, 2018
Stereo matching is a difficult and challenging task due to many uncontrollable factors that affect the results. These factors include the non-ideal radiometric conditions and the presence of weak-textured regions.
Jinyan Ni, Qingwu Li, Yan Liu, Yan Zhou
doaj   +1 more source

An Entity Relation Extraction Method Based on Dynamic Context and Multi-Feature Fusion

open access: yesApplied Sciences, 2022
Dynamic context selector, a kind of mask idea, will divide the matrix into some regions, selecting the information of region as the input of model dynamically.
Xiaolin Ma   +3 more
doaj   +1 more source

A Keyword Detection and Context Filtering Method for Document Level Relation Extraction

open access: yesApplied Sciences, 2022
Relation extraction (RE) is the core link of downstream tasks, such as information retrieval, question answering systems, and knowledge graphs. Most of the current mainstream RE technologies focus on the sentence-level corpus, which has great limitations
Hailan Kuang   +3 more
doaj   +1 more source

Understanding and Improving Recurrent Networks for Human Activity Recognition by Continuous Attention [PDF]

open access: yes, 2018
Deep neural networks, including recurrent networks, have been successfully applied to human activity recognition. Unfortunately, the final representation learned by recurrent networks might encode some noise (irrelevant signal components, unimportant ...
Gao, Haoxiang   +6 more
core   +2 more sources

Sensors and Sensor Networks [PDF]

open access: yesProceedings of the International Symposium on Automation and Robotics in Construction (IAARC), 2004
Recently, sensing technology has been experiencing quantum leaps in price reduction and in performance. This has occurred because of simultaneous advances in new materials, cheap computing power, micro to nano-level integrated fabrication, wireless networking, and sophisticated information technology. At the same time, the pace of business and the pace
openaire   +1 more source

Heart Rate Measurement Based on 3D Central Difference Convolution with Attention Mechanism

open access: yesSensors, 2022
Remote photoplethysmography (rPPG) is a video-based non-contact heart rate measurement technology. It is a fact that most existing rPPG methods fail to deal with the spatiotemporal features of the video, which is significant for the extraction of the ...
Xinhua Liu   +3 more
doaj   +1 more source

Using Artificial Intelligence in Wireless Sensor Routing Protocols [PDF]

open access: yes, 2006
This paper represents a dissertation about how an artificial intelligence technique can be applied to wireless sensor networks. Due to the constraints on data processing and power consumption, the use of artificial intelligence has been historically ...
Barbancho Concejero, Antonio   +3 more
core   +1 more source

Degradation of acephate using combined ultrasonic and ozonation method

open access: yesWater Science and Engineering, 2015
The degradation of acephate in aqueous solutions was investigated with the ultrasonic and ozonation methods, as well as a combination of both. An experimental facility was designed and operation parameters such as the ultrasonic power, temperature, and ...
Bin Wang   +8 more
doaj   +1 more source

Efficient Spatiotemporal Attention Network for Remote Heart Rate Variability Analysis

open access: yesSensors, 2022
Studies have shown that ordinary color cameras can detect the subtle color changes of the skin caused by the heartbeat cycle. Therefore, cameras can be used to remotely monitor the pulse in a non-contact manner.
Hailan Kuang   +3 more
doaj   +1 more source

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