[1]
Pactolus: A Method for Mid-Air Gesture Segmentation within EMG
Late-Breaking Works: Extending User Capabilities
/
Chen, Yineng
/
Su, Xiaojun
/
Tian, Feng
/
Huang, Jin
/
Zhang, Xiaolong (Luke)
/
Dai, Guozhong
/
Wang, Hongan
Extended Abstracts of the ACM CHI'16 Conference on Human Factors in
Computing Systems
2016-05-07
v.2
p.1760-1765
© Copyright 2016 ACM
Summary: Mid-air gestures have become an important interaction technique in natural
user interfaces, especially in augmented reality and virtual reality.
Supporting a set of continuous gesture-based commands in mid-air gesture
interaction systems, such as selecting and moving then placing an object,
however, remains to be a challenge. This is largely because these intentional
command gestures are connected through transitional, meaningless gestures,
which are often misleading for gesture recognition systems. The inability to
separate unintentional movements from intentional command gestures, also called
the Midas problem, limits the application of mid-air gestures. This paper
addresses the Midas problem via a physiological computing approach. With the
help of sensors that capture physiological signals, we present a novel method,
Pactolus, for segmenting mid-air gestures using arm electromyography. User
studies demonstrate the high accuracy of our approach in segmenting mid-air
gestures interleaved by transitional hand or finger movements.
[2]
Progressive Shape-Distribution-Encoder for 3D Shape Retrieval
Poster Session 2
/
Xie, Jin
/
Zhu, Fan
/
Dai, Guoxian
/
Fang, Yi
Proceedings of the 2015 ACM International Conference on Multimedia
2015-10-26
p.1167-1170
© Copyright 2015 ACM
Summary: In this paper, we propose a deep shape descriptor by learning the shape
distributions at different diffusion time via a progressive deep
shape-distribution-encoder. First, we develop a shape distribution
representation with the kernel density estimator to characterize the intrinsic
geometrical structure of the shape. Then, we propose to learn discriminative
shape features through a progressive shape-distribution-encoder. Specially, the
progressive shape-distribution-encoder aims at modeling the complex non-linear
transform of the estimated shape distributions between consecutive diffusion
time. Furthermore, in order to characterize the intrinsic structure of the
shape more efficiently, we stack multiple proposed progressive
shape-distribution-encoders to form a neural network structure. Finally, we
concatenated all neurons in the hidden layers of the progressive
shape-distribution-encoder network to form a discriminative shape descriptor
for retrieval. The proposed method is evaluated on three benchmark 3D shape
datasets and the experimental results demonstrate the superiority of our method
to the existing approaches.
[3]
Left and right hand distinction for multi-touch tabletop interactions
From touch through air to brain
/
Zhang, Zhensong
/
Zhang, Fengjun
/
Chen, Hui
/
Liu, Jiasheng
/
Wang, Hongan
/
Dai, Guozhong
Proceedings of the 2014 International Conference on Intelligent User
Interfaces
2014-02-24
v.1
p.47-56
© Copyright 2014 ACM
Summary: In multi-touch interactive systems, it is of great significance to
distinguish which hand of the user is touching the surface in real time.
Left-right hand distinction is essential for recognizing the multi-finger
gestures and further fully exploring the potential of bimanual interaction.
However, left-right hand distinction is beyond the capability of most existing
multi-touch systems. In this paper, we present a new method for left and right
hand distinction based on the human anatomy, work area, finger orientation and
finger position. Considering the ergonomics principles of gesture designing,
the body-forearm triangle model was proposed. Furthermore, a heuristic
algorithm was introduced to group multi-touch contact points and then made
left-right hand distinction. A dataset of 2880 images has been set up to
evaluate the proposed left-right hand distinction method. The experimental
results demonstrate that our method can guarantee the high recognition accuracy
and real time performance in freely bimanual multi-touch interactions.
[4]
SpeechTouch: precise cursor positioning on touch screen mobiles
Touch screen interaction and multi-modal user interfaces
/
Jiang, Yingying
/
Tian, Feng
/
Li, Guang
/
Zhang, Xiaolong
/
Du, Yi
/
Dai, Guozhong
/
Wang, Hongan
Proceedings of 2013 Conference on Human-computer interaction with mobile
devices and services
2013-08-27
2013-08-27
p.396-399
© Copyright 2013 ACM
Summary: On touch-screen mobile phones, text-related applications (e.g., email,
notes) usually involve a cursor in editing tasks. However, accurately
positioning the cursor to the editing position by touch is often a challenge
because of the "fat finger" problem. To improve the accuracy of one-touch
cursor positioning, we propose SpeechTouch, a multimodal method that combines
imprecise touch input and simple speech input for precise cursor positioning.
Our evaluation study shows that this method can significantly improve user
performance in cursor positioning on touch screen mobiles.
[5]
Multilevel interaction model for hierarchical tasks in information
visualization
Full papers
/
Ren, Lei
/
Cui, Jin
/
Du, Yi
/
Dai, Guozhong
Proceedings of the 2013 International Symposium on Visual Information
Communication and Interaction
2013-08-17
2013-08-17
p.11-16
© Copyright 2013 ACM
Summary: Infovis (Information visualization) task taxonomy plays an essential role in
guiding Infovis design and implementation. Infovis users with various roles in
Infovis usually have different requirements for Infovis task modeling.
Actually, Infovis research need a consistent taxonomy covering the tasks at
different levels, or an interaction model that can facilitate Infovis system
development with formal descriptions. But in fact, finding such a unified model
is challenging. In this paper we propose a multilevel interaction model (MIM)
for hierarchical tasks in Infovis systems. In MIM we define goal model,
behavior model, and operation model that can model multilevel tasks in Infovis.
In addition, we establish mapping models among MIM components, which can
support Infovis systems design, development, application, and evaluation.
Finally, we present a domain-specific Infovis application modeled by MIM.
Application examples shows that MIM can effectively model multilevel tasks in
Infovis and has potential to provide a framework enabling rapid prototyping of
Infovis systems.
[6]
An exploration of pen tail gestures for interactions
/
Tian, Feng
/
Lu, Fei
/
Jiang, Yingying
/
Zhang, Xiaolong (Luke)
/
Cao, Xiang
/
Dai, Guozhong
/
Wang, Hongan
International Journal of Human-Computer Studies
2013-05
v.71
n.5
p.551-569
Keywords: Pen stroke gesture
Keywords: Pen input
© Copyright 2013 Elsevier Ltd.
Summary: In this paper, we performed an exploration on the design and evaluation of
pen tail gesture, an interaction method that allows the use of pen tail
movement to initiate interactions. Based on our interviews with some designers
and researchers who regularly used pen-based tools, we conducted three
experiments to establish baseline criteria to distinguish intentional pen tail
gestures from incidental pen tail movements, and to understand the basic
movement behaviors in pen tail gestures. We developed designs and recognition
methods of pen gestures, and implemented three application prototypes based on
them. Our research can inspire some new designs of pen-based tools and enrich
the design repertoire of pen-based user interfaces.
[7]
Thumb widgets: apply thumb-tracking to enhance capabilities of multi-touch
on mobile devices
Inputs
/
Zeng, Xinda
/
Tian, Feng
/
Jiang, Yingying
/
Zhang, Xiaolong (Luke)
/
Dai, Guozhong
/
Wang, Hongan
Extended Abstracts of ACM CHI'13 Conference on Human Factors in Computing
Systems
2013-04-27
v.2
p.1281-1286
© Copyright 2013 ACM
Summary: While multi-touch design allows natural and flexible figure gestures in
interacting with mobile devices, the palm-size screen often limits its
potential in application and arouses issues such as inefficient mode switch and
incomplete gesture. To enrich the vocabulary of finger gestures in user
interaction, we present Thumb Widgets, a mechanism that adopts thumb as
assisted input channel to enhance the capabilities of multi-touch on
touch-based mobile devices. Thumb Widgets expand the design space in
gesture-based UIs and promote efficiency for tasks such as mode switching,
parameter setting, etc. Also, Thumb Widgets enable incomplete gestures to be
performed around the periphery of the device.
[8]
An exploration on long-distance communications between left-behind children
and their parents in China
Technology to support family connections
/
Pan, Lu
/
Tian, Feng
/
Lu, Fei
/
Zhang, Xiaolong (Luke)
/
Liu, Ying
/
Feng, Wenxin
/
Dai, Guozhong
/
Wang, Hongan
Proceedings of ACM CSCW'13 Conference on Computer-Supported Cooperative Work
2013-02-23
v.1
p.1147-1156
© Copyright 2013 ACM
Summary: In China, hundreds of millions of migrant workers have moved to cities or
coastal regions for more or better-paid jobs and have left their children
behind at their rural homes. Separated by thousands of kilometers, these
"left-behind" children and their migrant parents use mobile phones as their
primary -- and often only -- method of maintaining family connections. To
better understand the use of technology in this long-distance communication, we
conducted a multi-phased study using interviews and surveys in three different
Chinese rural areas. In this paper, we report our findings on how these
children communicate with their migrant parents and what information they
exchange. We also discuss design implications derived from these findings that
may improve communication between left-behind children and their parents.
[9]
Unistroke gestures on multi-touch interaction: supporting flexible touches
with key stroke extraction
Gestures and large displays
/
Jiang, Yingying
/
Tian, Feng
/
Zhang, Xiaolong
/
Liu, Wei
/
Dai, Guozhong
/
Wang, Hongan
Proceedings of the 2012 International Conference on Intelligent User
Interfaces
2012-02-14
p.85-88
© Copyright 2012 ACM
Summary: Gesture inputs on multi-touch tabletops usually involve multiple fingers
(more than two) and casual touchdowns or liftoffs of fingers. This flexibility
of touch gestures allows more natural user interaction, but also poses new
challenges for accurate recognition of multi-touch gestures. To address these
challenges, we propose a new approach to recognize flexible multi-touch stroke
gestures on tabletops. Based on a user study on multi-touch unistroke gestures,
we develop a gesture recognition method by extracting key strokes embedded in
flexible multi-touch input. Our evaluation study result shows that this method
can greatly improve the recognition accuracy of flexible multi-touch unistroke
gestures on tabletops.
[10]
A hyperbolic tree based interface for exploring massive files
Visual Analysis I
/
Zeng, Zhirong
/
Wang, Kun
/
Teng, Dongxing
/
Wang, Hongan
/
Dai, Guozhong
Proceedings of the 2011 International Symposium on Visual Information
Communication and Interaction
2011-08-04
p.4
© Copyright 2011 ACM
Summary: Along with the rapid development of information technology, individual users
of computers are faced with many problems in dealing with massive files, such
as enormous amount, serious redundancy and complex version evolution relation.
These lead that the file system becomes more and more rough-and-tumble, to a
certain extent putting users to trouble in daily work. This paper
systematically analyzed the problems in file system management, put forward
user cognitive model when faced with massive files, and then introduced the
FDTVAS system which is a visual interface based on hyperbolic tree view for
exploring the massive files. This system used specific algorithm to do the
intelligent analysis of file relationship, took hyperbolic tree as the main
visual form, and provided a series of interaction tasks according with users'
cognitive model. The built system can help users get a clear insight of the
file system and do the analysis and management efficiently.
[11]
Empirical studies of pen tilting performance in pen-based user interfaces
Applications
/
Tian, Feng
/
Cao, Xiang
/
Lu, Fei
/
Dai, Guozhong
/
Zhang, Xiaolong
/
Wang, Hongan
Proceedings of the 2011 International Symposium on Visual Information
Communication and Interaction
2011-08-04
p.8
© Copyright 2011 ACM
Summary: Recently, pen tilting has been explored in pen-based user interfaces and has
shown potential to improve user interaction in various tasks (e.g., menu
selection, modeless object manipulation). However, some basic questions
concerning pen tilting behaviors, such as the ideal range, azimuth size, and
direction of pen tilting, have not been thoroughly investigated. In this paper,
we report our empirical studies on user performances in basic pen tilting
tasks. First, we conducted a baseline study, which helps us to determine
tilting directions, tilting ranges, and the thresholds that separate incidental
pen tilting actions from intentional actions used for interaction. Based on the
results from the baseline study, we designed an experiment to investigate user
performances in goal tilting in different tilting ranges, azimuth sizes, and
directions. Drawing on the results of our data analyses on task completion
time, error rate, and pen tip movements, we discussed values of tilting
parameters like titling range, minimal azimuth size, and tilting direction.
[12]
ShadowStory: creative and collaborative digital storytelling inspired by
cultural heritage
Storytelling & perceptual crossing
/
Lu, Fei
/
Tian, Feng
/
Jiang, Yingying
/
Cao, Xiang
/
Luo, Wencan
/
Li, Guang
/
Zhang, Xiaolong
/
Dai, Guozhong
/
Wang, Hongan
Proceedings of ACM CHI 2011 Conference on Human Factors in Computing Systems
2011-05-07
v.1
p.1919-1928
© Copyright 2011 ACM
Summary: With the fast economic growth and urbanization of many developing countries
come concerns that their children now have fewer opportunities to express
creativity and develop collaboration skills, or to experience their local
cultural heritage. We propose to address these concerns by creating
technologies inspired by traditional arts, and allowing children to create and
collaborate through playing with them. ShadowStory is our first attempt in this
direction, a digital storytelling system inspired by traditional Chinese shadow
puppetry. We present the design and implementation of ShadowStory and a 7-day
field trial in a primary school. Findings illustrated that ShadowStory promoted
creativity, collaboration, and intimacy with traditional culture among
children, as well as interleaved children's digital and physical playing
experience.
[13]
A developing framework for interactive temporal data visualization
New concept and framework
/
Luo, Xiongfei
/
Teng, Dongxing
/
Liu, Wei
/
Tian, Feng
/
Dai, Guozhong
/
Wang, Hongan
Proceedings of the 2010 International Symposium on Visual Information
Communication and Interaction
2010-09-28
p.14
© Copyright 2010 ACM
Summary: This article presents UCFM, a user-centered developing framework for
interactive temporal data visualization. UCFM is comprised mainly by software
architecture and software development methods. The software architecture
describes modules in interactive temporal data visualization system and their
relationships. And based on the software architecture and development practice,
the software development methods summarize these specific steps to design and
develop interactive temporal data visualization system. To demonstrate UCFM's
validity, the development process of an interactive temporal data visualization
application is illustrated.
[14]
Cooperative concept map based on cognitive model for visual analysis
New concept and framework
/
Du, Yi
/
Ma, Cuixia
/
Teng, Dongxing
/
Dai, Guozhong
Proceedings of the 2010 International Symposium on Visual Information
Communication and Interaction
2010-09-28
p.15
© Copyright 2010 ACM
Summary: The ability to recognize users and their intention during the visual
analysis process is important to interact intelligently and effortlessly in a
cooperative environment. In this paper, we present the framework for creating
and modifying a concept map that allows analysts to collaborate and utilize
live collection of enterprise data in a visual interface. Based on modeling
users and tasks in visual analysis, a user model supporting collaborative
analysis is given. Furthermore, we propose the algorithm of concept map layout
to facilitate the visual analysis. The interface presents the analyst with the
dashboard configuration of certain data that users deems relevant, provides
tools to facilitate the decision making process. Finally, we apply it to a
collaborative visual decision support system. Experimental results show that it
enhances the accessibility and the individualization of collaborative concept
map for configuring enterprise data and helps to enhance user experience during
the visual analysis process.
[15]
Let's play Chinese characters: mobile learning approaches via culturally
inspired group games
Storytelling
/
Tian, Feng
/
Lv, Fei
/
Wang, Jingtao
/
Wang, Hongan
/
Luo, Wencan
/
Kam, Matthew
/
Setlur, Vidya
/
Dai, Guozhong
/
Canny, John
Proceedings of ACM CHI 2010 Conference on Human Factors in Computing Systems
2010-04-10
v.1
p.1603-1612
Keywords: Chinese education, Chinese literacy, developing countries, ict4d, literacy
acquisition, mobile games, traditional games
© Copyright 2010 ACM
Summary: In many developing countries such as India and China, low educational levels
often hinder economic empowerment. In this paper, we argue that mobile learning
games can play an important role in the Chinese literacy acquisition process.
We report on the unique challenges in the learning Chinese language, especially
its logographic writing system. Based on an analysis of 25 traditional Chinese
games currently played by children in China, we present the design and
implementation of two culturally inspired mobile group learning games,
Multimedia Word and Drumming Strokes. These two mobile games are designed to
match Chinese children's understanding of everyday games. An informal
evaluation reveals that these two games have the potential to enhance the
intuitiveness and engagement of traditional games, and children may improve
their knowledge of Chinese characters through group learning activities such as
controversy, judgments and self-correction during the game play.
[16]
Intelligent understanding of handwritten geometry theorem proving
Multimodal interaction
/
Jiang, Yingying
/
Tian, Feng
/
Wang, Hongan
/
Zhang, Xiaolong
/
Wang, Xugang
/
Dai, Guozhong
Proceedings of the 2010 International Conference on Intelligent User
Interfaces
2010-02-07
p.119-128
Keywords: geometry theorem proving, hand-drawn figures, hand-written proof scripts,
recognition, structure based manipulation
© Copyright 2010 ACM
Summary: Computer-based geometry systems have been widely used for teaching and
learning, but largely based on mouse-and-keyboard interaction, these systems
usually require users to draw figures by following strict task structures
defined by menus, buttons, and mouse and keyboard actions. Pen-based designs
offer a more natural way to develop geometry theorem proofs with hand-drawn
figures and scripts. This paper describes a pen-based geometry theorem proving
system that can effectively recognize hand-drawn figures and hand-written proof
scripts, and accurately establish the correspondence between geometric
components and proof steps. Our system provides dynamic and intelligent visual
assistance to help users understand the process of proving and allows users to
manipulate geometric components and proof scripts based on structures rather
than strokes. The results from evaluation study show that our system is well
perceived and users have high satisfaction with the accuracy of sketch
recognition, the effectiveness of visual hints, and the efficiency of
structure-based manipulation.
[17]
DOI-Wave: A Focus+Context Interaction Technique for Networks Based on
Attention-Reactive Interface
The Arts of Visual Layout, Presentation & Exploration
/
Ren, Lei
/
Zhang, Lin
/
Teng, Dongxing
/
Dai, Guozhong
/
Li, Qian
Proceedings of the 2009 International Symposium on Visual Information
Communication and Interaction
2009-09-24
p.85-94
Keywords: information visualization; user interface; graph visualization; interaction
techniques; Focus+Context; attention-reactive user interface
© Copyright 2009 Springer
Summary: This paper presents DOI-Wave, a Focus+Context technique for interactive
exploration of networks, whose layout depends dynamically on the user's
degree-of-interest (DOI). DOI-Wave uses the hierarchical clustered graph
paradigm, in which, the view of a graph is dynamically determined by the
selection of a single node as the focus node. The layout algorithm could change
the view of graph animatedly, as the selected focus node is changed, according
to each node's DOI value computed by a DOI function. The Focus+Context paradigm
in DOI-Wave, from user's perspective, makes it easy to understand the
relationships between the focus node and the other nodes. And the hierarchical
cluster paradigm, which adapts to display space dynamically, leads to
simultaneously clear and compact visualization. We have applied DOI-Wave to
visualizing and exploring social networks. Evaluation results show DOI-Wave is
effective.
[18]
DaisyViz: A Model-based User Interfaces Toolkit for Development of
Interactive Information Visualization
Systems, Interfaces and Applications of Visualization
/
Ren, Lei
/
Tian, Feng
/
Zhang, Lin
/
Dai, Guozhong
Proceedings of the 2009 International Symposium on Visual Information
Communication and Interaction
2009-09-24
p.209-229
Keywords: User interface; information visualization; toolkit; multiple coordinated
views; model-based interface development
© Copyright 2009 Springer
Summary: Although the increasing hordes of information visualization technologies are
recognized both in industry and research community, there are seldom toolkits
for non-expert users or end-users to rapidly design and develop domain-specific
information visualization applications. Such toolkits should provide support
for the unified data structures suited to tree, network, temporal and
multi-dimensional data, well-known visualization techniques and interaction
techniques, and generic visualization tasks. We built DaisyViz, a model-based
user interfaces toolkit, which enables end-users to rapidly develop
domain-specific information visualization applications without traditional
programming. DaisyViz is based on an interface model called UIMI consisting of
three declarative models -- data model, visualization model, and control model.
In the development process, users visually construct UIMI which could be used
to generate profiles. Those profiles can be parsed by DaisyViz to automatically
generate a prototype system. We firstly give the formal definition of UIMI, and
then discuss the architecture of DaisyViz. To evaluate DasyViz we built an
application in a manufacturing enterprise and performed a user study. The
results show DaisyViz is usable and effective.
[19]
A Pen-Based Teaching System for Children and Its Usability Evaluation
eLearning and Education
/
Wang, Danli
/
Ying, Tingting
/
Xiong, Jinquan
/
Wang, Hongan
/
Dai, Guozhong
HCI International 2009: 13th International Conference on Human-Computer
Interaction, Part IV: Interacting in Various Application Domains
2009-07-19
v.4
p.256-265
Keywords: pen-based interaction; children; teaching system; usability
Copyright © 2009 Springer-Verlag
Summary: The computer has become more and more important in children' life and
learning. Various issues exist in the application of multimedia edutainment
software and courseware. Therefore, we analyze the current situation and
requirement of preschool education software, and present the development of
pen-based teaching system for children. Lecturing courseware, annotation,
adding contents have been provided, which make targeted classroom teaching
convenient, and children interactive courseware function has also been provided
to arouse their learning initiative and enthusiasm. After analyzing the
feedback, we design and develop the improved version of the system, and
evaluate the two versions through experiments. Finally, we propose some
suggestions for its modification.
[20]
Structuring and manipulating hand-drawn concept maps
Short papers
/
Jiang, Yingying
/
Tian, Feng
/
Wang, Xugang
/
Zhang, Xiaolong
/
Dai, Guozhong
/
Wang, Hongan
Proceedings of the 2009 International Conference on Intelligent User
Interfaces
2009-02-08
p.457-462
Keywords: dynamic programming, graph partition, hand-drawn concept map, structure
recognition
© Copyright 2009 ACM
Summary: Concept maps are an important tool to knowledge organization,
representation, and sharing. Most current concept map tools do not provide full
support for hand-drawn concept map creation and manipulation, largely due to
the lack of methods to recognize hand-drawn concept maps. This paper proposes a
structure recognition method. Our algorithm can extract node blocks and link
blocks of a hand-drawn concept map by combining dynamic programming and graph
partitioning and then build a concept-map structure by relating extracted nodes
and links. We also introduce structure-based intelligent manipulation technique
of hand-drawn concept maps. Evaluation shows that our method has high structure
recognition accuracy in real time, and the intelligent manipulation technique
is efficient and effective.
[21]
A pen and speech-based storytelling system for Chinese children
/
Wang, Danli
/
Li, Jie
/
Zhang, Jie
/
Dai, Guozhong
Computers in Human Behavior
2008-09-17
v.24
n.6
p.2507-2519
Keywords: Storytelling system
Keywords: Children
Keywords: Scenario-based design
Keywords: Multimodal interaction
Keywords: Usability evaluation
© Copyright 2008 Elsevier Ltd.
Summary: Storytelling plays an important role in language learning. Storytelling by a
child, as an educational activity, influences the child's linguistic ability,
thought process, imagination, and creativity significantly. Many researchers
have made extensive studies in storytelling systems for children. While there
presently exist many software-based storytelling applications, most are deemed
not completely suitable for Chinese children. In this paper, combining the
characteristics of Chinese children and using the multimodal interaction
pattern based on speech and pen-gesture, we present children a 3D storytelling
system which uses user-centered scenario-based design method. The usability of
the storytelling system is evaluated and the results suggest that all the users
generally feel pretty satisfied with the system.
[22]
Design and Analysis of Conceptual Sketches Based on Context Awareness
Novel Interaction Technique
/
Ma, Cuixia
/
Wang, Hongan
/
Teng, Dongxing
/
Dai, Guozhong
Proceedings of the 2008 Asia Pacific Conference on Computer Human
Interaction
2008-07-06
p.328-335
© Copyright 2008 Springer-Verlag
Summary: This paper presents a framework of sketch editing environment for conceptual
design process based on context. It analyzes the characteristics of design
process and presents sketch description model for sketch based interface.
Furthermore, it discusses the context fusion methodologies and algorithms to
infer design context to understand designers' intent and communicate with
designers intuitively. The context mainly is related to user, environment, and
machine. A sample application is given to conduct the process planning drawings
by sketching, exploring and modifying their ideas interactively, with immediate
and continuous visual feedback. In the paper, we aims to study designing a
sketch based interface enabling both computer and designer aware of underlying
design contexts and providing intelligent operations.
[23]
Tilt menu: using the 3D orientation information of pen devices to extend the
selection capability of pen-based user interfaces
Menu and Command Selection
/
Tian, Feng
/
Xu, Lishuang
/
Wang, Hongan
/
Zhang, Xiaolong
/
Liu, Yuanyuan
/
Setlur, Vidya
/
Dai, Guozhong
Proceedings of ACM CHI 2008 Conference on Human Factors in Computing Systems
2008-04-05
v.1
p.1371-1380
© Copyright 2008 ACM
Summary: We present a new technique called 'Tilt Menu' for better extending selection
capabilities of pen-based interfaces. The Tilt Menu is implemented by using 3D
orientation information of pen devices while performing selection tasks. The
Tilt Menu has the potential to aid traditional one-handed techniques as it
simultaneously generates the secondary input (e.g., a command or parameter
selection) while drawing/interacting with a pen tip without having to use the
second hand or another device. We conduct two experiments to explore the
performance of the Tilt Menu. In the first experiment, we analyze the effect of
parameters of the Tilt Menu, such as the menu size and orientation of the item,
on its usability. Results of the first experiment suggest some design
guidelines for the Tilt Menu. In the second experiment, the Tilt Menu is
compared to two types of techniques while performing connect-the-dot tasks
using freeform drawing mechanism. Results of the second experiment show that
the Tilt Menu perform better in comparison to the Tool Palette, and is as good
as the Toolglass.
[24]
Multimodal Chinese text entry with speech and keypad on mobile devices
Short papers
/
Jiang, Yingying
/
Wang, Xugang
/
Tian, Feng
/
Ao, Xiang
/
Dai, Guozhong
/
Wang, Hongan
Proceedings of the 2008 International Conference on Intelligent User
Interfaces
2008-01-13
p.341-344
© Copyright 2008 ACM
Summary: Chinese text entry is challenging on mobile devices which rely on keypad
input. Entering one character may require many key presses. This paper proposes
a multimodal text entry technique for Chinese. In this method, Chinese user can
enter Chinese text by simultaneously using the simplified phonemic input method
named Jianpin with keypad and speech utterance. The key of the technique is a
multimodal fusion algorithm, which synchronizes speech and keypad input and
fuses redundant information from two modalities to get the best candidate. A
preliminary evaluation shows that users appreciate this technique and it could
reduce key presses and enhance the input efficiency.
[25]
Improving Document Icon to Re-find Efficiently What You Need
Part 1: Graphical User Interfaces and Visualization
/
Deng, Changzhi
/
Zhou, Mingjun
/
Tian, Feng
/
Dai, Guozhong
/
Wang, Hongan
HCI International 2007: 12th International Conference on Human-Computer
Interaction, Part II: Interaction Platforms and Techniques
2007-07-22
v.2
p.49-52
Keywords: document icon; annotation; mark; subjective value
Copyright © 2007 Springer-Verlag
Summary: It is common that documents are represented by document icon in graphical
user interfaces. The document icon facilitates user to retrieve documents, but
it is difficult to distinguish the document from a collection of documents that
user have accessed to. Our paper presents a document icon on which the users
can add some subjective values and mark. Then we describe a system ex-explorer
that users can browser and search the extent document icon. We found that it is
easy to re-find the document on which users added some annotation or mark by
themselves.