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14th IEEE International Symposium on Mixed and Augmented Reality, ISMAR 2015

作者： Lee, Ahyun Lee, Joo-Haeng Kim, Jaehong Computer Software Korea University of Science and Technology Korea Republic of Human Robot Interaction Lab ETRI Korea Republic of

ISBN: (纸本)9781467376600

We present a movable spatial augmented reality (SAR) system that can be easily installed in a user workspace. The proposed system aims to dynamically cover a wider projection area using a portable projector attached to a simple robotic device. It has a clear advantage than a conventional SAR scenario where, for example, a projector should be installe1d with a fixed projection area in the workspace. In the previous research [1], we proposed a data-driven kinematic control method for a movable SAR system. This method targets a SAR system integrated with a user-created robotic (UCR) device where an explicit kinematic configuration such as CAD model is unavailable. Our contribution in this paper is to show the feasibility of the data-driven control method by developing a practical application where dynamic change of projection area matters. We outline the control method and demonstrate an assembly guide example using a casually installed movable SAR system. © 2015 IEEE.

关键词： Kinematics

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DISCRIMINATIVELY TRAINED JOINT SPEAKER AND ENVIRONMENT REPRESENTATIONS FOR ADAPTATION OF DEEP NEURAL NETWORK ACOUSTIC MODELS

DISCRIMINATIVELY TRAINED JOINT SPEAKER AND ENVIRONMENT REPRE...

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IEEE International Conference on Acoustics, Speech and Signal Processing

作者： Maofan Yin Sunil Sivadas Kai Yu Bin Ma Key Lab. of Shanghai Education Commission for Intelligent Interaction and Cognitive Engineering SpeechLab. Department of Computer Science and Engineering Shanghai Jiao Tong University China Human Language Technology Lab. Institute for Infocomm Research Singapore

ISBN: (纸本)9781479999897

A recent trend in normalization of factors extraneous to a speech recognition task has been to explicitly introduce features related to the unwanted variability in the training of Deep Neural Networks (DNN). Typically, this is done by either perturbing the training set with models of these extraneous factors such as vocal tract length and environmental noise or augmenting the conventional spectral features with auxiliary information such as i-vector, noise spectrum, etc. Another emerging approach is to derive low dimensional representations of the factors from the hidden layers of DNN and use it for normalization of the acoustic model. Almost all of these approaches focus on either speaker or environment normalization. In this paper we propose a novel approach for estimating a compact joint representation of speakers and environment by training a DNN, with a bottleneck layer, to classify the i-vector features into speaker and environment labels by Multi-Task Learning (MTL). Another novelty is to learn this compact representation while learning to map the i-vector of a noisy utterance into its corresponding clean speaker ivector and noise-only i-vector. Experiments were conducted on an artificially noise-corrupted version of the WSJ corpus. The proposed compact joint speaker-environment representations show promising gains.

关键词： i-vector deep neural network speaker adaptation multi-task learning noise robustness Loudspeakers speaker adaptation Noise robustness Environments normalization Joints Neural network representations Speech recognition PARALLEL PROCESSING (computerS) Acoustic models Ambient Noise Vocal tract

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Ad hoc communities on the road: Serendipitous social encounters to enhance tourist experiences 15

Ad hoc communities on the road: Serendipitous social encount...

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27th Australian computer-human interaction Conference, OzCHI 2015

作者： Thiel, Sarah-Kristin Foth, Marcus Schroeter, Ronald Urban Informatics Research Lab. Queensland University of Technology Brisbane Australia Centre for Human-Computer Interaction University of Salzburg Austria

ISBN: (纸本)9781450336734

Driving can be a lonely activity. While there has been a lot of research and technical inventions concerning car-tocar communication and passenger entertainment, there is still little work concerning connecting drivers. Whereas tourism is very much a social activity, drive tourists and road trippers have few options to communicate with fellow travelers. Our study is placed at the intersection of tourism and driving. It aims to enhance the trip experience during driving through social interaction. This paper explores how a mobile application that allows instant messaging between travelers sharing similar context can establish a temporary, ad hoc community and enhance the road trip experience. A prototype was developed and evaluated in various user and field studies. The study's outcomes are relevant for the design of future mobile tourist guides that benefit from community design, social encounters and recommendations.

关键词： User interfaces

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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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What makes you bike? Exploring persuasive strategies to encourage low-energy mobility 10

What makes you bike? Exploring persuasive strategies to enco...

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10th International Conference on Persuasive Technology, PERSUASIVE 2015

作者： Wunsch, Matthias Stibe, Agnis Millonig, Alexandra Seer, Stefan Dai, Chengzhen Schechtner, Katja Chin, Ryan C.C. Austrian Institute of Technology Vienna Austria MIT Media Lab CambridgeMA United States Human Computer Interaction Vienna University of Technology Vienna Austria

ISBN: (纸本)9783319203058

This paper explores three persuasive strategies and their capacity to encourage biking as a low-energy mode of transportation. The strategies were designed based on: (I) triggering messages that harness social influence to facilitate more frequent biking, (II) a virtual bike tutorial to increase biker's self-efficacy for urban biking, and (III) an arranged bike ride to help less experienced bikers overcome initial barriers towards biking. The potential of these strategies was examined based on self-reported trip data from 44 participants over a period of four weeks, questionnaires, and qualitative interviews. Strategy I showed a significant increase of 13.5 percentage points in share of biking during the intervention, strategy II indicated an increase of perceived self-efficacy for non-routine bikers, and strategy III provided participants with a positive experience of urban biking. The explored strategies contribute to further research on the design and implementation of persuasive technologies in the field of mobility. © Springer International Publishing Switzerland 2015.

关键词： Surveys

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Author Correction: Embodiment in a Child-Like Talking Virtual Body Influences Object Size Perception, Self-Identification, and Subsequent Real Speaking

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Scientific reports 2018年第1期8卷 4854页

作者： Ana Tajadura-Jiménez Domna Banakou Nadia Bianchi-Berthouze Mel Slater UCL Interaction Centre (UCLIC) University College London London UK. a.tajadura@ucl.ac.uk. Universidad Loyola Andalucía Department of Psychology Seville Spain. a.tajadura@ucl.ac.uk. Universidad Loyola Andalucía Human Neuroscience Lab Seville Spain. a.tajadura@ucl.ac.uk. Event Lab Department of Clinical Psychology and Psychobiology Faculty of Psychology Barcelona Spain. Institute of Neurosciences University of Barcelona Barcelona Spain. UCL Interaction Centre (UCLIC) University College London London UK. Department of Computer Science University College London London UK. melslater@ub.edu. Event Lab Department of Clinical Psychology and Psychobiology Faculty of Psychology Barcelona Spain. melslater@ub.edu. Institute of Neurosciences University of Barcelona Barcelona Spain. melslater@ub.edu. Institució Catalana de Recerca i Estudis Avançats (ICREA) Barcelona Spain. melslater@ub.edu.

A correction to this article has been published and is linked from the HTML and PDF versions of this paper. The error has not been fixed in the paper.

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Kids in fairytales: Experiential and interactive storytelling in children's libraries 33

Kids in fairytales: Experiential and interactive storytellin...

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

作者： Kang, Seokbin Lee, Youngwoon Lee, Suwoong Human-Computer Interaction Lab University of Maryland College Park College ParkMD20740 United States Knowledge E-learning Lab Electronics and Telecommunications Research Institute Daejeon Korea Republic of

ISBN: (纸本)9781450331463

Mixed Reality (MR) has the potential to improve the quality of users' experience by immersing users in the virtual world, but the limitations of computer vision and 3D graphics techniques have made it difficult to bring up practical applications. In this paper we present a mixed reality application that combines a mixed reality experience and storytelling to motivate young children to engage more in reading. We describe system design from physical space to software implementation and share our findings from 4 years of deployment. Since the first prototype was deployed at a national children's library headquartered in Korea, the accumulated number of young visitors reached 15000 and 20 additional children's libraries have installed the system. Our results demonstrate that mixed reality applications create a pleasant and engaging user experience for young children combined with storytelling.

关键词： Mixed reality

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A dual-channel beamformer based on time-delay compensation estimator and shifted PCA for speech enhancement

A dual-channel beamformer based on time-delay compensation e...

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International Conference on Software, Telecommunications and computer Networks (SoftCOM)

作者： Zhang Jie Hong Liu Open Lab on Human-Robot Interaction School of Electrical and Computer Engineering Peking University China Open Lab on Human-Robot Interaction School of Electrical and Computer Engineering Peking University Beijing China

Speech enhancement is an essential technique to process degraded audio in various applications. Beamforming to eliminate interferences based on sensor arrays is the most well-known method for this issue. However, traditional beamformers often face magnitude incoherence towards received signals due to directional weighting. Therefore, a novel dual-channel beamformer based on time-delay compensation (TDC) and shifted principal components analysis (PCA) is presented in this work. Firstly, our enhancement algorithm utilizes TDC estimator to preserve binaural cues, including interaural time-delay and intensity difference. Then the estimated cues are comprised to improve the shifted PCA, which can reduce noise by extracting primary components. Finally, the aforehand processed audio are input to a beamformer with post-filter to obtain enhanced speech. Experiments have demonstrated that the proposed algorithm could achieve some superiorities in speech intelligibility compared with the state-of-the-arts against real scenarios.

关键词： Speech Principal component analysis Speech enhancement Signal to noise ratio Array signal processing

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