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What is that in your hand? Recognizing grasped objects via forearm electromyography sensing

Proceedings of the ACM on Interactive, Mobile, Wearable and Ubiquitous Technologies 2018年第4期2卷 1–24页

作者： Fan, Junjun Fan, Xiangmin Tian, Feng Li, Yang Liu, Zitao Sun, Wei Wang, Hongan State Key Laboratory of Computer Science Beijing Key Lab of Human-Computer Interaction Institute of Software Chinese Academy of Sciences Beijing China School of Computer and Control Engineering University of Chinese Academy of Sciences Beijing China Google Research and Machine Intelligence Mountain ViewCA United States TAL AI Lab Beijing China

Knowing the object in hand can offer essential contextual information revealing a user's fine-grained activities. In this paper, we investigate the feasibility, accuracy, and robustness of recognizing the uninstrumented object in a user's hand by sensing and decoding her forearm muscular activities via off-the-shelf electromyography (EMG) sensors. We present results from three studies to advance our fundamental understanding of the opportunities that EMG brings in object interaction recognition. In the first study, we investigated the influence of physical properties of objects such as shape, size, and weight on EMG signals. We also conducted a thorough exploration of the feature spaces and sensor positions which can provide a solid base to rely on for future designers and practitioners for such interactive technique. In the second study, we assessed the feasibility and accuracy of inferring the types of grasped objects via using forearm muscular activity as a cue. Our results indicate that the types of objects can be recognized with up to 94.2% accuracy by employing user-dependent training. In the third study, we investigated the robustness of this approach in a realistic office setting where users were allowed to interact with objects as they would naturally. Our approach achieved up to 82.5% accuracy in discriminating 15 types of objects, even when training and testing phrases were purposefully performed on different days to incorporate changes in EMG patterns over time. Overall, this work contributes a set of fundamental findings and guidelines on using EMG technologies for object-based activity tracking. © 2018 Association for Computing Machinery.

关键词： Object detection

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Influence of multi-modality on moving target selection in virtual reality

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Virtual Reality & Intelligent Hardware 2019年第3期1卷 303-315页

作者： Yang LI Dong WU Jin HUANG Feng TIAN Hong'an WANG Guozhong DAI Beijing Key Laboratory of Human-Computer Interaction Institute of SoftwareChinese Academy of SciencesBeijing 100190China State Key Laboratory of Computer Science Chinese Academy of SciencesBeijing 100190China Institute of Remote Sensing and Digital Earth Chinese Academy of SciencesBeijing 100190China University Chinese Academy Sciences Beijing 100190China

Background Owing to recent advances in virtual reality(VR)technologies,effective user interaction with dynamic content in 3D scenes has become a research *** target selection is a basic interactive task in which the user performance research in tasks is significant to user interface design in *** from the existing static target selection studies,the moving target selection in VR is affected by the change in target speed,angle and size,and lack of research on some key *** This study designs an experimental scenario in which the users play badminton under the condition of *** adding seven kinds of modal clues such as vision,audio,haptics,and their combinations,five kinds of moving speed and four kinds of serving angles,and the effect of these factors on the performance and subjective feelings in moving target selection in VR,is *** The results show that the moving speed of the shuttlecock has a significant impact on the user *** angle of service has a significant impact on hitting rate,but has no significant impact on the hitting *** acquisition of the user performance by the moving target is mainly influenced by vision under the combined modalities;adding additional modalities can improve user *** the hitting distance of the target is increased in the trimodal condition,the hitting rate *** This study analyses the results of user performance and subjective perception,and then provides suggestions on the combination of modality clues in different scenarios.

关键词： Multimodal Moving target selection Virtual reality

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Visual fatigue assessment and modeling based on ECG and EOG caused by 2D and 3D displays 54

Visual fatigue assessment and modeling based on ECG and EOG ...

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54th Annual SID Symposium, Seminar, and Exhibition 2016, Display Week 2016

作者： Yang, Xinpan Wang, Danli Hu, Haichen Yue, Kang State Key Laboratory of Computer Institute of Software Chinese Academy of Sciences Beijing China Beijing Key Lab of Human-Computer Interaction Institute of Software Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781510832909

Three-dimensional (3D) displays become more and more popular in many fields, because they can provide amazing visual effects. However, visual fatigue as one of the critical factors has seriously impeded the wide range of applications of 3D technology. Electrocardiograph (ECG) and electrooculogram (EOG) have been widely used for monitoring visual fatigue. In this paper, one more objective and effective visual fatigue evaluation model is proposed. Subjective scores (SS), heart rates (HR), blink frequency (BF), Sympathetic activity, Vagal activity, Sympathetic-vagal ratio (a measure of autonomic balance), Average of NN intervals (NN-MEAN) and Standard deviation of NN intervals (SDNN) of all subjects were collected to analyze the change of visual fatigue during the continuous viewing 3D/2D movie. The results showed that SS, HR, BF, Sympathetic activity and SDNN all increase with visual fatigue while NN-MEAN and Vagal activity decrease. As shown by the result of subjective scoring, the visual fatigue has an overall trend of increasing when viewing both 2D and 3D videos and it is higher in 3D condition than in 2D. Based on the results above, two models were built to predict visual fatigue from above indicates during continuous viewing 2D and 3D video processes respectively. The performance of the models makes a good prediction of visual fatigue. © (2016) by SID-the Society for Information Display. All rights reserved.

关键词： Three dimensional displays

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A comprehensive evaluation of visual fatigue on viewing small autostereoscopic display

A comprehensive evaluation of visual fatigue on viewing smal...

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2015 SID International Symposium

作者： Wang, Danli Yang, Xinpan Xie, Yaohua Wan, Zijian State Key Laboratory of Computer Institute of Software Chinese Academy of Sciences Beijing China Beijing Key Lab of Human-Computer Interaction Institute of Software Chinese Academy of Sciences Beijing China

Stereoscopic displays are promising and have many applications in various fields because they can provide amazing visual effects. However, one of the inevitable problems is that they also cause visual fatigue after durative viewing. Recent years, many researches have been proposed on the visual fatigue during stereoscopic viewing. But there are very few researches on the visual fatigue during a continuous viewing process, especially for those combine both subjective and objective evaluation. Besides, with the development and popularization of mobile devices, it is now possible for users to experience stereoscopic effects using mobile devices anytime and anywhere. In this paper, a comprehensive evaluation method is proposed. Subjective scores, Electrocardiograph (ECG) and eye movement of all subjects were collected when they were viewing stereoscopic videos. These data were then used to analyze the change of the visual fatigue during viewing. A mobile device was adopted and a comparative experiment was designed to assess the change of the visual fatigue when viewing 2D and 3D content respectively. Eighteen subjects were employed in the experiment, and the results show that the visual fatigue is generally greater when viewing 3D contents than when viewing similar 2D contents. © 2015 SID.

关键词： Eye movements

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A tangible programming system conveying event handling concept 15

A tangible programming system conveying event handling conce...

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14th International Conference on interaction Design and Children, IDC 2015

作者： Wang, Danli Qi, Yunfeng Zhang, Lan State Key Laboratory of Computer Sciences Institute of Software Chinese Academy of Sciences Beijing China Beijing Key Lab of Human-Computer Interaction Institute of Software Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781450335904

Tangible User Interfaces (TUIs) can create opportunities to learn programming for children, which have positive effect on children's development. TanProRobot is a tangible system designed for children at grade 1-2 to learn programming concepts. It consists of three parts, tangible programming blocks, the robot car and the manipulatives. The input and output of the system are both tangible. Children can program the robot car to act certain actions by arranging programming blocks. Also, children can interact with the car with manipulatives. TanProRobot aims to introduce event handling concept and sensors to children. During the game, children can also learn some traffic rules, which are import to self-security. © 2015 ACM.

关键词： tangible user interface tangible programming programming languages children

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TanProStory: A tangible programming system for children's storytelling 33

TanProStory: A tangible programming system for children's st...

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33rd Annual CHI Conference on human Factors in Computing Systems, CHI EA 2015

作者： Qi, Yunfeng Wang, Danli Zhang, Lan Shi, Yining Beijing Key Lab of Human-Computer Interaction Institute of Software Chinese Academy of Sciences Beijing China State Key Laboratory of Computer Sciences Institute of Software Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781450331463

Object-oriented programming is easily accessible by beginners, since it allows for modeling real-world entities as software objects. Storytelling is a natural way to introduce the basic concepts behind object-oriented programming. To convey object-oriented programming concepts to children, such as object, attribute and etc., we present a new tangible programming tool-TanProStory, for children in 1-3 grades. Children can tell a story by arranging programming blocks to initialize a character and construct a program controlling its action. TanProStory consists of three parts: Programming blocks, Animation Game and Sensor input module. Programming blocks in TanProStory are surface-sensitive, i.e. only the command on the top surface can be detected. We conducted a preliminary user study and analyzed the results, which can guide a better design of TanProStory.

关键词： Object oriented programming

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Visual fatigue during continuous viewing the 3D movie 27

Visual fatigue during continuous viewing the 3D movie

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27th Annual Stereoscopic Displays and Applications Conference, SD and A 2016

作者： Wang, Danli Yang, Xinpan Hu, Haichen Wang, Helei State Key Laboratory of Computer Institute of Software Chinese Academy of Sciences Beijing100190 China Beijing Key Lab of Human-Computer Interaction Institute of Software Chinese Academy of Sciences Beijing100190 China

Three-dimensional (3D) displays become more and more popular in many fields. However, visual fatigue is one of the critical factors that impede the wide range of applications of 3D technology. Although many studies have investigated the 3D visual fatigue, a few of them are based on continuous viewing 3D contents. In this paper, we propose a method to evaluate visual fatigue through subjective scoring and objective measuring the physiological parameters during the continuous viewing 3D/2D movie. In the viewing, we test the objective and subjective indicators, including the heart rate (HR), blink frequency (BF) and percentage of eyelid closure over the pupil over time (PERCLOS) and the subjective scoring (SS). Before and after viewing the video, VRT, PMA and questionnaires are measured. Experimental results showed that the subjective score and objective indicates of visual fatigue increased gradually with viewing time although it was fluctuated. The symptoms of visual fatigue were generally more serious after viewing 3D movie than 2D ones. Based on the results above, a model was built to predict visual fatigue from HR and BF during continuous viewing 3D video processes. © 2016 Society for Imaging science and Technology.

关键词： Surveys

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Evaluation of the user experience of "astronaut training device": An immersive, vr-based, motion-training system

Evaluation of the user experience of "astronaut training dev...

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International Symposium on Optical Measurement Technology and Instrumentation

作者： Yue, Kang Wang, Danli Yang, Xinpan Hu, Haichen Liu, Yuqing Zhu, Xiuqing Beijing Key Lab of Human-Computer Interaction Institute of Software Chinese Academy of Sciences Beijing China State Key Laboratory of Computer Institute of Software Chinese Academy of Sciences Beijing China National Key Laboratory of Human Factors Engineering China Astronaut Research and Training Center Beijing China

ISBN: (纸本)9781510607682

To date, as the different application fields, most VR-based training systems have been different. Therefore, we should take the characteristics of application field into consideration and adopt different evaluation methods when evaluate the user experience of these training systems. In this paper, we propose a method to evaluate the user experience of virtual astronauts training system. Also, we design an experiment based on the proposed method. The proposed method takes learning performance as one of the evaluation dimensions, also combines with other evaluation dimensions such as: Presence, immersion, pleasure, satisfaction and fatigue to evaluation user experience of the System. We collect subjective and objective data, the subjective data are mainly from questionnaire designed based on the evaluation dimensions and user interview conducted before and after the experiment. While the objective data are consisted of Electrocardiogram (ECG), reaction time, numbers of reaction error and the video data recorded during the experiment. For the analysis of data, we calculate the integrated score of each evaluation dimension by using factor analysis. In order to improve the credibility of the assessment, we use the ECG signal and reaction test data before and after experiment to validate the changes of fatigue during the experiment, and the typical behavioral features extracted from the experiment video to explain the result of subjective questionnaire. Experimental results show that the System has a better user experience and learning performance, but slight visual fatigue exists after experiment. © 2016 SPIE.

关键词： Electrocardiograms

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Compare and Model Multi-level Stereoscopic 3D Visual Fatigue Based on EEG

Compare and Model Multi-level Stereoscopic 3D Visual Fatigue...

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SID Symposium, Seminar, and Exhibition 2017, Display Week 2017

作者： Yue, Kang Wang, Danli Hu, Haichen Yang, Xinpan Chiu, Steve C. State Key Laboratory of Computer Institute of Software Chinese Academy of Sciences Beijing China Beijing Key Lab of Human-Computer Interaction Institute of Software Chinese Academy of Sciences Beijing China College of Science and Engineering Idaho State University Pocatello United States

ISBN: (纸本)9781510848757

In this paper, we designed an experiment to observe changes for different fatigue level in human brain when watching random dot stereogram (RDS) using the method of EEG. The subjects were asked to watch 3D content for 30 minutes and the disparity of RDS changed every 10 seconds. During this watching task, subjects should rate their extent of fatigue during the experiment on the scale of one to five only when they felt worse or better. 30 channels electroencephalogram (EEG) signals were recorded through the experiment. Finally, the relationship between various fatigue levels and disparities which revealed by EEG signals were investigated. Our results show that the power of waveband, namely alpha increased with the fatigue level increasing from one to four during watching RDS, but decreased in level five. We have employed logistic regression to model fatigue level and achieved classification accuracy of 94.18%. Our research has important implications for the continuous monitoring of user's fatigue in the future. © 2017 SID.

关键词： Electroencephalography

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Task-Specific versus Free-Choice Non-Driving-Related Tasks: Enhancing Automated Driving Takeover Research Through Varied Task Engagement

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iscience 2025年

作者： Wenjun Wang Zhenyuan Wang Qingkun Li Yizi Su Chao Zeng Bo Cheng State Key Laboratory of Automotive Safety and Energy School of Vehicle and Mobility Tsinghua University Beijing 100084 China Beijing Key Laboratory of Human–Computer Interaction Institute of Software Chinese Academy of Sciences Beijing 100190 China Automotive Software Innovation Center (Chongqing) Chongqing 401331 China College of Information Science and Engineering Henan University of Technology Zhengzhou 450001 China Hami Vocational and Technical College Hami 839001 China

Level 3 automated driving systems require drivers to occasionally retake control, making it crucial to understand factors influencing takeover performance. This study investigates how single versus multiple non-driving-related tasks (NDRTs) affect driver behaviour, perceptions, and takeover capability. Using a high-fidelity driving simulator with 32 participants, conditions varying NDRT types and task-switching frequency were examined. Results indicate that diverse NDRT engagement and frequent task-switching significantly influence takeover performance. Moreover, our decision tree models highlighted the number of NDRT types and task-switching frequency as critical predictors of driver response effectiveness. These findings underscore the importance of accounting for task engagement diversity and switching behaviours in automated vehicle system design. This study provides practical implications for optimizing human-automation interactions and enhancing the safety of automated driving systems by managing drivers’ attentiveness for their in-cabin activities.

关键词： Distractions and interruptions Task switching Driver behaviour Trust in automation human-automation interactions

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