Changyuan Wang

ORCID: 0000-0003-0262-9665
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About
Contact & Profiles
Research Areas
  • Gaze Tracking and Assistive Technology
  • Hand Gesture Recognition Systems
  • Advanced Computing and Algorithms
  • Glaucoma and retinal disorders
  • Target Tracking and Data Fusion in Sensor Networks
  • Inertial Sensor and Navigation
  • Ocular Surface and Contact Lens
  • Video Surveillance and Tracking Methods
  • Human-Automation Interaction and Safety
  • Teleoperation and Haptic Systems
  • Visual Attention and Saliency Detection
  • Robotics and Sensor-Based Localization
  • Advanced Control Systems Design
  • Software Reliability and Analysis Research
  • Image Processing Techniques and Applications
  • Infrared Target Detection Methodologies
  • Remote Sensing and Land Use
  • EEG and Brain-Computer Interfaces
  • Sleep and Work-Related Fatigue
  • Robotic Path Planning Algorithms
  • Advanced Computational Techniques and Applications
  • Face and Expression Recognition
  • Advanced Technologies in Various Fields
  • Human Mobility and Location-Based Analysis
  • Rough Sets and Fuzzy Logic

Xi'an Technological University
2016-2025

Krirk University
2024

Yibin University
2022

Zhengzhou University
2020

Xi'an University of Technology
2010-2012

Situational awareness is the ability of pilots to master flight status, which great significance aviation safety and effect. According information processing model, pilot’s main steps are feeling, perception execution. There many problems in situation analysis guided by visual gaze, such as large deviation high delay due various influencing factors complex characteristics. In order solve this problem, paper proposes a assessment method based on artificial intelligence neural network...

10.1142/s0218001422590157 article EN cc-by-nc-nd International Journal of Pattern Recognition and Artificial Intelligence 2022-04-01

Pupil tracking technology is a and detection method that uses eye image information to extract real-time position of the pupil. Detecting pilot's movement patterns characteristics through pupil signals an important part monitoring physiological characteristics. The current algorithm prone problems such as insufficient accuracy discontinuous when faced with occlusion caused by frequent blinking loss in dark light environments occur during flight training for pilot students. To increase...

10.1109/access.2024.3396808 article EN cc-by-nc-nd IEEE Access 2024-01-01

This study aims to capture subtle changes in the pupil, identify relatively weak inter-class changes, extract more abstract and discriminative pupil features, a refinement recognition method based on attention mechanisms. Based deep learning framework ResNet101 residual network as backbone network, model is established. Among them, image preprocessing module used preprocess images captured by infrared spectroscopy, removing internal noise from images. By using are captured, identified,...

10.3390/app142310971 article EN cc-by Applied Sciences 2024-11-26

A new filter named the maximum likelihood-based iterated divided difference (MLIDDF) is developed to improve low state estimation accuracy of nonlinear due large initial errors and nonlinearity measurement equations. The MLIDDF algorithm derivative-free implemented only by calculating functional evaluations. involves use iteration update current measurement, termination criterion based on likelihood introduced in step, so guaranteed produce a sequence estimate that moves up surface. In...

10.3390/s120708912 article EN cc-by Sensors 2012-06-27

In order to prove the practical application of intelligent AGV (Automated Guided Vehicle) in port, special requirements port are analyzed, BP (Back Propagation) network algorithm is improved, road sign recognition system and visual established, finally recognit ion accuracy response speed tested through experiments. The results show that characteristics can meet complex conditions, improved has good value, as well rate height. This will be positive significance future research on China.

10.3233/jifs-179491 article EN Journal of Intelligent & Fuzzy Systems 2019-11-01

Improving the efficiency of human-computer interaction is one critical goals intelligent aircraft cockpit research. The gaze control method can vastly reduce manual operation operators and improve intellectual level interaction. Eye-tracking basis sight interaction, so performance eye-tracking will directly affect outcome This paper presents an suitable for in cockpit, which now estimate position on multiple screens based face images. We use a multi-camera system to capture facial images,...

10.3934/mbe.2023622 article EN cc-by Mathematical Biosciences & Engineering 2023-01-01

The trend prediction of software vulnerability can provide valuable threat intelligence in security event prevention. It is a challenging task for highly accurate prediction. To address this problem, novel method, STL-EEMD-ARIMA, proposed, by incorporating Seasonal and Trend Decomposition using Loess (STL), Ensemble Empirical Mode (EEMD), Autoregressive Integrated Moving Average (ARIMA). Firstly, the random fluctuation components are extracted from samples STL respectively. Secondly, we use...

10.1016/j.compeleceng.2023.108743 article EN cc-by-nc-nd Computers & Electrical Engineering 2023-05-01

Pilots' loss of situational awareness is one the human factors affecting aviation safety. Numerous studies have shown that pilot perception errors are main reasons for a lack without proper system to detect these errors. The objective this study examine changes in pilots' eye movements during various flight tasks from perspective visual awareness. pilot's gaze rule scanning strategy mined through cSPADE, while hidden semi-Markov model-based model used visuoperceptual state, linking...

10.3390/s23146418 article EN cc-by Sensors 2023-07-14

With the rapid growth of open-source software, code cloning has become increasingly prevalent. If there are security vulnerabilities in a cloned segment, those may spread related software to potentially lead incidents. The existing methods vulnerable detection performed on condition that source is converted into an intermediate representation. However, these do not fully consider rich semantic knowledge and patch information available for codes, which can induce high false positive rate...

10.1155/2022/3822836 article EN Wireless Communications and Mobile Computing 2022-06-04

The iris recognition of the human eye is mainly aimed at matching, and there are congenital differences in different iris. In this paper, image identified by designing efficient convolution neural network(CNN) model. Firstly, with preprocessing image, region extracted divided into eight rectangular sub-regions. And then, those sub-regions put designed model, which can extract abstract features automatically. Finally, model that learned a large number training data. Experiments show...

10.1109/icsai.2017.8248462 article EN 2017-11-01

10.1007/s11042-016-3283-8 article EN Multimedia Tools and Applications 2016-02-17

The traditional information extraction technology of dashboard is easily affected by external factors, and the robustness poor. To improve safety pilot’s performance on dashboard, this paper proposes a way for extracting feature in eye tracking, which acquires line sight point simulated dashboard. It then uses Mask R-CNN method to detect gaze area extracts target information. Finally, it fuses two sets data get result pilot who scene. Experiment results show that new proposed has better accuracy.

10.1142/s0218001420550174 article EN International Journal of Pattern Recognition and Artificial Intelligence 2019-09-25

Head-mounted eye-tracking instruments are important devices for sports and human factors research, their calibration is a more tedious task due to the varied morphology of head as well wear differences. In order improve efficiency, we innovatively proposed Z-shaped moving target instead fixed in our self-research wearable device, which improved time needed from 100 seconds less than 30 seconds. addition, reduce error caused by user's movement during calibration, world camera image...

10.1117/12.3025987 article EN 2024-02-21

Abstract The keypoint of autonomous driving technology is the accurate instructions maked by desicision-makers based on perception information. Human plays an important role in decision-makers. cognitive load usually used to quantify impact human-computer interaction during flighting. In this paper, we proposed a innovate automatic landing control method theory and Deep Deterministic Policy Gradient. Different traditional algorithm which heavily relays model, reinforcement learning design...

10.2478/ijanmc-2024-0007 article EN International Journal of Advanced Network Monitoring and Controls 2024-01-01

This paper, based on UAV far-flung sensing science and synthetic brain algorithm, studies the monitoring early warning technological know-how of flood catastrophes. Firstly, catastrophes is summarized. Then, blended with geographic records machine (GIS) technology, software in catastrophe analyzed. Finally, combining micro-UAV AI key applied sciences device primarily imaginative prescient are studied, along lookup gadget technology. The definition mindset. Mindset A mindset AI, broadly...

10.17762/ijcnis.v16i2.6635 article EN cc-by-nc-sa International Journal of Communication Networks and Information Security (IJCNIS) 2024-07-25

Abstract To overcome low efficiency and accuracy of existing forest fire detection algorithms, this paper proposes a network model to enhance the real-time robustness detection. This structure is based on YOLOv5 target algorithm combines backbone with The feature extraction module attention dsCBAM improved by depth-separable convolution, replaces loss function CIoU original VariFocal that more suitable for imbalanced characteristics positive negative samples in data set. Experiments were...

10.2478/ijanmc-2023-0080 article EN International Journal of Advanced Network Monitoring and Controls 2023-12-01

Pupil center recognition and location is an essential branch of ergonomics. It can be applied to emotion analysis attention judgment. How get the position pupil from eye photos core this field. Previous studies provided a helpful method, using scale-invariant feature transform (SIFT) extract relevant features combine them with K-Nearest Neighbor (KNN) classifier. However, method’s accuracy not satisfying, under some conditions, it will drift other problems. We put forward new idea solve by...

10.1142/s0218001422560055 article EN International Journal of Pattern Recognition and Artificial Intelligence 2022-05-28

Blockchain technology is a system for storing data in an immutable way that makes it hard to manipulate or trick the system. However, scalability remains crucial challenge encountering issues of low efficiency with transaction throughput. This paper proposes innovative mechanism transmission across homogeneous blockchain systems called Collaborative Multi-Chain Architecture (CMCA). We use sharding combined inter communication model (IBCM) routing management and make entire computation much...

10.1109/iditr54676.2022.9796483 article EN 2022-05-01

Due to the expanding application field of gaze estimation, estimation has become an important research topic in human-computer interaction and computer vision. Most current mainstream methods for during HCI are based on a sing-camera single-screen system. In order address issues multi-camera multi-screen systems, this paper explores use deep learning model, residual neural network (ResNet50) plus attention mechanism, estimate operator's point (PoG) screen flight simulator. First, front face...

10.1109/iccnea57056.2022.00013 article EN 2022-09-01

Tactile sensing has recently been used in pattern recognition technology for pilots’ posture information and environmental information. Human tactile is limited, however, through control of the spatial distribution vibration intensity each contact stimulation array, accuracy, convenience, comfort device can be comprehensively improved. Moreover, rate most current flight methods low. In this paper, principle haptic coding optimized. A combined scheme “vibration [Formula: see text] sequence”...

10.1142/s0218001421500142 article EN International Journal of Pattern Recognition and Artificial Intelligence 2020-09-19
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