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2,014 results on '"Yang, Yanyan"'

61. Review of Research on Fatigue Driving Detection Based on Driver Facial Features

Author

YANG Yanyan, LI Leixiao, LIN Hao

Subjects
driver facial features, fatigue driving test, fatigue discriminant parameters, feature extraction, face detection, Electronic computers. Computer science, QA75.5-76.95
Abstract

Fatigue driving is one of the main factors that threaten the safety of drivers and traffic. Efficient and accurate fatigue driving detection method can effectively ensure the safety of drivers and their surrounding traffic, maintain traffic order, and reduce property losses and casualties. The fatigue driving detection method based on the driver’s physiological characteristics and vehicle driving information has many limitations, such as being unfriendly to the driver and having numerous influencing factors. Therefore, the fatigue driving detection method based on the driver’s facial features has become a research hotspot. Firstly, the facial feature performance of fatigue driving is described, and advantages, disadvantages and application scenarios of common public datasets in the field of fatigue driving are summarized. Secondly, the advantages and disadvantages of common face detection algorithms in the field of fatigue driving detection are analyzed and studied by using open datasets and comparative experiments. Then, this paper generalizes the process of detection methods based on driver facial features, whose methods and technologies used in the key steps are reviewed. Furthermore, fatigue discriminant parameters and methods of fatigue driving results prediction are summarized. Finally, this paper ends with a discussion of current challenges of fatigue driving detection methods based on driver facial features and looks forward to the future research.

Published
2023
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75. Integrative analysis of γδT cells and dietary factors reveals predictive values for autism spectrum disorder in children

Author

Zhang, Lingling, Xu, Yiran, Sun, Shuang, Liang, Cailing, Li, Wenhua, Li, Hongwei, Zhang, Xiaoli, Pang, Dizhou, Li, Mengyue, Li, Huihui, Lang, Yongbin, Liu, Jiatian, Jiang, Shuqin, Shi, Xiaoyi, Li, Bingbing, Yang, Yanyan, Wang, Yazhe, Li, Zhenghua, Song, Chunlan, Duan, Guiqin, Leavenworth, Jianmei W., Wang, Xiaoyang, and Zhu, Changlian

Published
2023
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77. Multi-View Region Adaptive Multi-temporal DMM and RGB Action Recognition

Author

Al-Faris, Mahmoud, Chiverton, John P., Yang, Yanyan, and Ndzi, David L.

Subjects
Computer Science - Computer Vision and Pattern Recognition
Abstract

Human action recognition remains an important yet challenging task. This work proposes a novel action recognition system. It uses a novel Multiple View Region Adaptive Multi-resolution in time Depth Motion Map (MV-RAMDMM) formulation combined with appearance information. Multiple stream 3D Convolutional Neural Networks (CNNs) are trained on the different views and time resolutions of the region adaptive Depth Motion Maps. Multiple views are synthesised to enhance the view invariance. The region adaptive weights, based on localised motion, accentuate and differentiate parts of actions possessing faster motion. Dedicated 3D CNN streams for multi-time resolution appearance information (RGB) are also included. These help to identify and differentiate between small object interactions. A pre-trained 3D-CNN is used here with fine-tuning for each stream along with multiple class Support Vector Machines (SVM)s. Average score fusion is used on the output. The developed approach is capable of recognising both human action and human-object interaction. Three public domain datasets including: MSR 3D Action,Northwestern UCLA multi-view actions and MSR 3D daily activity are used to evaluate the proposed solution. The experimental results demonstrate the robustness of this approach compared with state-of-the-art algorithms., Comment: 14 pages, 6 figures, 13 tables. Submitted

Published
2019

79. Lumbar Discitis Due to Intrauterine Purulent Infection Induced by Removing the Intrauterine Contraceptive Ring: a Case Report and Literature Review

Author

YANG Yanyan, WANG Xinling, LI Na, WANG Bei, DUAN Xiaoyan, ZHANG Yunxia

Subjects
pelvic inflammatory disease, ring removal, intrauterine infection, lumbar discitis, escherichia coli infections, case reports, Medicine
Abstract

Intrauterine purulent infection is a severe pelvic inflammatory disease, which manifests as fever, abdominal pain, and increased vaginal secretions. Discitis is an infectious disease which may both affect the intervertebral disc space and the adjacent vertebrae or cartilage plate. Due to the absence of typical symptoms and signs, the clinical diagnosis of this disease may be delayed until damaged pyramidal bone and decreased lower-limb muscle strength. We reported a case of lumbar discitis caused by intrauterine purulent infection after removing the intrauterine contraceptive ring, presenting with low back pain with walking disorder, then conducted a literature review to deepen the understanding of the pathogens, routes of infection transmission, diagnostic criteria, treatment principles and serious adverse consequences of pelvic inflammatory disease. For nonspecific intervertebral discitis, clinicians should carefully ask for the medical history and the progression of the disease, in addition to laboratory and imaging tests. It is especially important to make a diagnosis and perform the surgery in time.

Published
2022
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