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14th Australasian User Interface Conference, AUIC 2013

作者： Greeff, Christopher R. Yang, Joe MacDonald, Bruce Wünsche, Burkhard C. Department of Electrical and Computer Engineering University of Auckland New Zealand Graphics Group Department of Computer Science University of Auckland New Zealand

ISBN: (纸本)9781921770241

The obesity epidemic facing the Western world has been a topic of numerous discussions and research projects. One major issue preventing people from becoming more active and following health care recommendations is an increasingly busy life style and the lack of motivation, training, and available supervision. While the use of personal trainers increases in popularity, they are often expensive and must be scheduled in advance. In this research we developed a smartphone application, which assists users with learning and monitoring exercises. A key feature of the application is a novel algorithm for analysing accelerometer data and automatically counting repetitive exercises. This allows users to perform exercises anywhere and anytime, while doing other activities at the same time. The recording of exercise data allows users to track their performance, monitor improvements, and compare it with their goals and the performance of other users, which increases motivation. A usability study and feedback from a public exhibition indicates that users like the concept and find it helpful for supporting their exercise regime. The counting algorithm has an acceptable accuracy for many application scenarios, but has limitations with regard to complex exercises, small number of repetitions, and poorly performed exercises. © 2013, Australian computer Society, Inc.

关键词： Accelerometers

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Comparison of enhanced flat EEG image via distinct fuzzification

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AIP Conference Proceedings 2015年第1期1691卷

作者： S. Zenian T. Ahmad A. Idris 1Department of Mathematics with Computer Graphics Faculty of Science and Natural Resources Universiti Malaysia Sabah Jalan UMS 88400 Kota Kinabalu Sabah Malaysia 2Ibnu Sina Institute for Scientific and Industrial Research Universiti Teknologi Malaysia 81310 UTM Johor Bahru Malaysia 3Department of Mathematical Sciences Faculty of Science Universiti Teknologi Malaysia 81310 UTM Johor Bahru Malaysia

In medical imaging, image enhancement is an important step before further processing is being carried out. It aims to improve the quality of the images as uncertainties maybe inherited due to several factors. In this paper, the image of Flat EEG (fEEG) is enhanced (in terms of contrast enhancement) by using intuitionistic fuzzy set (IFS) approach. The enhanced images are compared through two different membership functions whereby it is implemented in the initial step of the enhancement process. It is observed that cluster centres with darker background appeared in the resultant images as compared to the input image. Moreover, the contrast comparison between the input and output images are being carried out.

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Hacking HCI3P - Second Workshop on Human computer Interaction in Third Places 14

Hacking HCI3P - Second Workshop on Human Computer Interactio...

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2014 ACM SIGCHI Conference on Designing Interactive Systems, DIS 2014

作者： Calderon, Roberto Fels, Sidney Anacleto, Junia Memarovic, Nemanja Thompson, W. Travis Media And Graphics Interdisciplinary Centre University of British Columbia FSC 3640 - 2424 Main Mall Vancouver BC V6T 1Z4 Canada Department of Electrical and Computer Engineering University of British Columbia 2356 Main Mall Vancouver BC V6T 1Z4 Canada Computer Science Department Federal University of São Carlos 13565-905 São Carlos-SP Brazil Faculty of Informatics University of Lugano Via Giuseppe Buffi 13 6904 Lugano Switzerland Department of Communication University of South Florida 4202 E Fowler Ave CIS 1040 Tampa FL 33620 United States

ISBN: (纸本)9781450329033

The Second Workshop on Human computer Interaction for Third Places (HCI3P) aims at providing a forum to discuss the roles of interactive technologies, particularly under a DIY and Maker approach, in the shaping of the third places of the future. HCI3P is organized as a hands-on event with a 6-hour "crafting" session where participants will collaboratively create a low or medium fidelity prototype.

关键词： Personal computing

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Using a serious game approach to teach 'operator precedence' to introductory programming students

Using a serious game approach to teach 'operator precedence'...

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2013 17th International Conference on Information Visualisation, IV 2013

作者： Adamo-Villani, Nicoletta Haley-Hermiz, Thomas Cutler, Robb Department of Computer Graphics Technology Purdue University West Lafayette IN United States Department of Computer Science Purdue University West Lafayette IN United States

ISBN: (纸本)9780769550497

In this paper we describe the design, development, formative evaluation and initial findings of one level of a serious game whose objective is to teach Information Assurance concepts to undergraduate students in introductory programming courses. The game level focuses on the concept of 'operator precedence'. The player travels through a multilevel 3- dimensional maze and at each junction in the maze he/she is required to solve a mathematical problem that involves the application of operator precedence rules. A correct answer allows the player to move closer to the maze exit, an incorrect solution moves the player farther from the end of the maze. Initial findings from a formative study with a group of 14 undergraduate students show that the game level is usable, engaging and useful for learning/reviewing the intended programming concept. © 2013 IEEE.

关键词： Serious games

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Determining the relative benefits of pairing virtual reality displays with applications 14

Determining the relative benefits of pairing virtual reality...

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14th Australasian User Interface Conference, AUIC 2013

作者： Peek, Edward M. Wünsche, Burkhard Lutteroth, Christof Graphics Group Department of Computer Science The University of Auckland Private Bag 92019 Auckland1142 New Zealand

ISBN: (纸本)9781921770241

Over the last century, virtual reality (VR) technologies (stereoscopic displays in particular) have repeatedly been advertised as the future of movies, television, and more recently, gaming and general HCI. However after each wave of commercial VR products, consumer interest in them has slowly faded away as the novelty of the experience wore off and its benefits were no longer perceived as enough to outweigh the cost and limitations. Academic research has shown that the amount of benefit a VR technology provides depends in the application it is used for and that, contrary to how these technologies are often marketed, there is currently no one-size-fits-all 3D technology. In this paper we present an evaluation framework designed to determine the quality of depth cues produced when using a 3D display technology with a specific application. We also present the results of using this framework to evaluate some common consumer VR technologies. Our framework works by evaluating the technical properties of both the display and application against a set of quality metrics. This framework can help identify the 3D display technology which provides the largest benefit for a desired application. © 2013, Australian computer Society, Inc.

关键词： Three dimensional displays

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Efficient real-time shadows 13

Efficient real-time shadows

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ACM Special Interest Group on computer graphics and Interactive Techniques Conference, SIGGRAPH 2013

作者： Eisemann, Elmar Assarsson, Ulf Schwarz, Michael Valient, Michal Wimmer, Michael Delft University of Technology Netherlands Department of Computer Science and Engineering Chalmers University Sweden Guerrilla Games / Sony Computer Entertainment Netherlands Institute of Computer Graphics and Algorithms Vienna University of Technology Austria

ISBN: (纸本)9781450323390

This course provides an overview of efficient, real-time shadow algorithms. It presents the theoretical background but also discusses implementation details for facilitating efficient realizations (hard and soft shadows, volumetric shadows, reconstruction techniques). These elements are of relevance to both experts and practitioners. The course also reviews budget considerations and analyzes performance trade-offs, using examples from various AAA game titles and film previsualization tools. While physical accuracy can sometimes be replaced by plausible shadows, especially for games, film production requires more pecision, such as scalable solutions that can deal with highly detailed *** course builds upon earlier SIGGRAPH courses as well as the recent book Real-Time Shadows (A K Peters, 2011) by four of the instructors (due to its success, a second edition is planned for 2014). And with two instructors who have worked on AAA game and movie titles, the course presents interesting behindthe-scenes information that illuminates key topics.

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Music education using augmented reality with a head mounted display 14

Music education using augmented reality with a head mounted ...

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14th Australasian User Interface Conference, AUIC 2013

作者： Chow, Jonathan Feng, Haoyang Amor, Robert Wünsche, Burkhard C. Department of Software Engineering University of Auckland New Zealand Software Engineering Research Group Department of Computer Science University of Auckland New Zealand Graphics Group Department of Computer Science University of Auckland New Zealand

ISBN: (纸本)9781921770241

Traditional music education places a large emphasis on individual practice. Studies have shown that individual practice is frequently not very productive due to limited feedback and students lacking interest and motivation. In this paper we explore the use of augmented reality to create an immersive experience to improve the efficiency of learning of beginner piano students. The objective is to stimulate development in notation literacy and to create motivation through presenting as a game the task that was perceived as a chore. This is done by identifying successful concepts from existing systems and merging them into a new system designed to be used with a head mounted display. The student is able to visually monitor their practice and have fun while doing so. An informal user study indicates that the system initially puts some pressure on users, but that participants find it helpful and believe that it improves learning. © 2013, Australian computer Society, Inc.

关键词： Augmented reality

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A new pixels flipping method for huge watermarking capacity of the invoice font image

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Scientific World Journal 2014年第1期2014卷 895063-895063页

作者： Li, Li Hou, Qingzheng Lu, Jianfeng Xu, Qishuai Dai, Junping Mao, Xiaoyang Chang, Chin-Chen Institute of Graphics and Image Hangzhou Dianzi University Hangzhou Zhejiang 310018 China Institute of Digital Media Hangzhou Dianzi University Hangzhou Zhejiang 310018 China University of Yamanashi Yamanashi-ken 409-3866 Japan Department of Information Engineering and Computer Science Feng Chia University Taichung 40724 Taiwan Department of Computer Science and Information Engineering Asia University Taichung 41354 Taiwan

Invoice printing just has two-color printing, so invoice font image can be seen as binary image. To embed watermarks into invoice image, the pixels need to be flipped. The more huge the watermark is, the more the pixels need to be flipped. We proposed a new pixels flipping method in invoice image for huge watermarking capacity. The pixels flipping method includes one novel interpolation method for binary image, one flippable pixels evaluation mechanism, and one denoising method based on gravity center and chaos degree. The proposed interpolation method ensures that the invoice image keeps features well after scaling. The flippable pixels evaluation mechanism ensures that the pixels keep better connectivity and smoothness and the pattern has highest structural similarity after flipping. The proposed denoising method makes invoice font image smoother and fiter for human vision. Experiments show that the proposed flipping method not only keeps the invoice font structure well but also improves watermarking capacity. © 2014 Li Li et al.

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Diverse trajectory planning for UAV control displays

Diverse trajectory planning for UAV control displays

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12th International Conference on Autonomous Agents and Multiagent Systems 2013, AAMAS 2013

作者： Tožička, Jan Balata, Jan Míkovec, Zdeněk Agent Technology Center Dept. of Computer Science Prague Czech Republic Department of Computer Graphics and Interaction FEE Czech Technical University Prague Czech Republic

ISBN: (纸本)9781627487665

Current UAV control systems can plan optimal trajectories with respect to predefined constraints (waypoints, no-fly zones). However when the operator is not satisfied with planned trajectories it is usually very complicated to force the system to change the trajectories in desired way. In this demonstration we solve this problem by innovative UAV control display based on diverse planning algorithm. Copyright © 2013, International Foundation for Autonomous Agents and Multiagent Systems (***). All rights reserved.

关键词： Unmanned aerial vehicles (UAV)

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A tool for analytical simulation of B-splines surface deformation

A tool for analytical simulation of B-splines surface deform...

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作者： González-Hidalgo, Manuel Jaume-I-Capó, Antoni Mir, Arnau Nicolau-Bestard, Gabriel Computer Graphics Vision and Artificial Intelligence Group Maths. and Computer Science Department University of the Balearic Islands Ed. Anselm Turmeda 07122 Palma Spain

A non-planar surface deformation model based on B-splines as finite elements is presented here. The model includes the variational formulation, the system of ordinary differential equations derived from it and its analytical solution. The model has been checked for a variety of surfaces such as tiles, half spheres, planes, etc. Furthermore, we are able to solve the system analytically by only moving a reduced number of control points to deform the surface. This makes the method faster, since numerical methods are no longer necessary. © 2012 Elsevier Ltd. All rights reserved.

关键词： computer graphics

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