Graphics and Human Computer Interfaces Commons^™

Learning Human Emotion Patterns For Modeling Virtual Humans, Shu Feng, Ah-Hwee Tan

Research Collection School Of Computing and Information Systems

Emotion modeling is a crucial part in modeling virtual humans. Although various emotion models have been proposed, most of them focus on designing specific appraisal rules. As there is no unified framework for emotional appraisal, the appraisal variables have to be defined beforehand and evaluated in a subjective way. In this paper, we propose an emotion model based on machine learning methods by taking the following position: an emotion model should mirror actual human emotion in the real world and connect tightly with human inner states, such as drives, motivations and personalities. Specifically, a self-organizing neural model called Emotional Appraisal …

Engineering A 3 Dimensional Model Of The Bridgewater Campus Using 3ds Max, Jean-Leman Rusangiza

Senior Seminars

Computers are a revolutionary part of daily life. Today computers are everywhere and used by everyone. The popularity of computers is mainly due to computer graphics. Graphics make computers easier to use and understand, by just about anybody. Today computer graphics are everywhere, on television, in films, training simulators and video games. In this paper a computer scientist decided to explore the field of computer graphics to learn how they are made and how they can help and educate people. In doing so a 3D computer model was engineered using a 3D modeling software system called 3ds MAX and a …

Wii Remote-Based Collaborative Interfaces For Music, Adriano Baratè, Luca A. Ludovico, Davide Andrea Mauro

Computer Sciences and Electrical Engineering Faculty Research

Wii Remote is the main controller for Nintendo's Wii con- sole. Thanks to the use of accelerometer and optical sensor technology, it presents motion sensing capability, which implies gesture recognition and intuitive pointing. Such a controller is user-friendly, inexpensive and easily available, due to growing Wii console's popularity. These features make Wii Remote a good device to create and manipulate both music and audio in a home entertainment environment. In this paper, the most interesting characteristics of the controller will be reviewed. A case study will be presented, namely the creation of a virtual music instrument to be controlled in …

A Case Study Of The Effects Of A Web Interface Redesign Based On Usability Guidelines., Paromita Bhattacharya

Electronic Theses and Dissertations

Usability guidelines for user interface (UI) design formulated by Nielsen and other authorities were used to redesign the web interface for a web based distance education course. The website's original UI, as judged by a group of web design professionals, violated standard guidelines for usability, readability, learnability, consistency, efficiency of use and flexibility. The original and redesigned UIs were tested using thinking aloud testing, a user satisfaction survey, and usability inspection. The results of user testing and heuristic evaluation suggest that the use of these guidelines in website redesign had a positive impact on user performance. A more conclusive result …

Improving Brain-Computer Interface Performance: Giving The P300 Speller Some Color., David B. Ryan

Electronic Theses and Dissertations

Individuals who suffer from severe motor disabilities face the possibility of the loss of speech. A Brain-Computer Interface (BCI) can provide a means for communication through non-muscular control. Current BCI systems use characters that flash from gray to white (GW), making adjacent character difficult to distinguish from the target. The current study implements two types of color stimulus (grey to color [GC] and color intensification [CI]) and I hypotheses that color stimuli will; (1) reduce distraction of nontargets (2) enhance target response (3) reduce eye strain. Online results (n=21) show that GC has increased information transfer rate over CI. Mean …

Rock Porosity Analysis Using High Resolution X-Ray Tomography, Leo Groner, Dula Parkinson, Katya Bazilevskaya

STAR Program Research Presentations

Understanding rock porosity, the fraction of rock volume that is in pores, is a key to modeling weathering and flow of water, petroleum and CO2 through geological structures. Weathering of rocks affects the CO2 cycle, nutrient cycle and soil formation. Rock porosity affects water flow rates and, in turn, affects weathering. Avizo software was used to explore, visualize and measure the reconstructed high-resolution X-ray micro-tomography data collected from scanned rocks. Many Avizo approaches were tried before arriving at an acceptable process to determine their porosity characteristics. Porosity dynamics are affected by weathering and lithification. At micron resolution, the image is …

Trends In Web Typography, Heather Mcintosh

Graphic Communication

No abstract provided.

Image Processing – I: Research Design For Evaluation Of Finger Input Properties On Multi-Touch Screen, Ahsan Ullah, Ahmad Kamil B. Mahmood, Suziah Sulaiman, Muzafar Khan

International Conference on Information and Communication Technologies

Interactive tabletop display provides a collaborative workspace to users around a table. Users sit in front of each other and they perform direct and collaborative multi-touch interaction simultaneously. Users access the interactive elements using their bare fingers. The finger works as a pointer device, and it has direct relation with the size, shape, and configuration of the interactive elements on sensitive displays. It is found that there is lack of precise selection of small size interactive elements owing to users' fat fingers. In this regard, it is aimed to propose a research design to evaluate the finger input properties in …

Automatic Content Generation For Video Self Modeling, Ju Shen, Anusha Raghunathan, Sen-Ching S. Cheung, Ravi R. Patel

Computer Science Faculty Publications

Video self modeling (VSM) is a behavioral intervention technique in which a learner models a target behavior by watching a video of him or herself. Its effectiveness in rehabilitation and education has been repeatedly demonstrated but technical challenges remain in creating video contents that depict previously unseen behaviors. In this paper, we propose a novel system that re-renders new talking-head sequences suitable to be used for VSM treatment of patients with voice disorder. After the raw footage is captured, a new speech track is either synthesized using text-to-speech or selected based on voice similarity from a database of clean speeches. …

Point-Based Color Bleeding With Volumes, Christopher J. Gibson

Master's Theses

The interaction of light in our world is immensely complex, but with mod-

ern computers and advanced rendering algorithms, we are beginning to reach

the point where photo-realistic renders are truly difficult to separate from real

photographs. Achieving realistic or believable global illumination in scenes with

participating media is exponentially more expensive compared to our traditional

polygonal methods. Light interacts with the particles of a volume, creating com-

plex radiance patterns.

In this thesis, we introduce an extension to the commonly used point-based

color bleeding (PCB) technique, implementing volume scatter contributions. With

the addition of this PCB algorithm extension, we …

Developing Digital Field Guides For Plants: A Study From The Perspective Of Users, Emily Roseanne Schwarz

Master's Theses

A field guide is a tool to identify an object of natural history. Field guides
cover a wide range of topics from plants to fungi, birds to mammals, and shells to minerals. Traditionally, field guides are books, usually small enough to be carried outdoors . They enjoy wide popularity in modern life; almost every American home and library owns at least one field guide, and the same is also true for other areas of the world.

At this time, companies, non-profits, and universities are developing computer
technologies to replace printed field guides for identifying plants. This thesis
examines the state …

Passive Matrix Electro-Luminescent Display System, Michael E. Miller, John F. Hamilton Jr., Andrew D. Arnold

AFIT Patents

A passive matrix, electro-luminescent display system has a passive matrix, electro-luminescent display having an orthogonally oriented array of column and row electrodes and an electro-luminescent layer located between the electrodes at the intersection of each column and row electrode forming an individual light-emitting element. Drivers provide separate signals at different times to different groups of row electrodes within the array of row electrodes; wherein the row electrodes of each group simultaneously receive at least two different level signals. A display driver receives and processes the input image signal to provide a presharpened image control signal. Column drivers respond to the …

Animation And Visualization Of 3d Underwater Sensor Networks, Matthew T. Tran

Master's Theses

Simulation and visualization are critical for the development of new systems and protocols in the area of computer networking. As real-world field testing is expensive and time-consuming, simulations are often preferred as they can be performed repeatedly and inexpensively while still reflecting the outcome of field tests to an extent. Visualizations of the simulation and field test results often follow to provide researchers with a vivid animation of the events, allowing for a much more intuitive understanding of the system than tediously reading through trace files. While there are currently a multitude of simulators and animators for land-based networks, few …

Adaptation Of The Nevada Climate Change Data Portal Web Interface To Small-Screen Mobile Devices, Tsvetan Komarov

Festival of Communities: UG Symposium (Posters)

Robust and convenient access to the Nevada Climate Change Data Portal is vital for the project’s success, because of the researchers’ need to gather and analyze large volumes of data with minimal effort. However, the current version of the data portal web interface is not optimized for small-screen mobile devices such as mobile phones, PDAs, iPads, NetBooks, and others. The proposed research will address this issue by exploring the current methods for creating a client-aware web interface adaptable to the variety of small-screen devices, designing and implementing the most appropriate solution, and finally, user testing of the implemented solution.

Fusing Heterogeneous Modalities For Video And Image Re-Ranking, Hung-Khoon Tan, Chong-Wah Ngo

Research Collection School Of Computing and Information Systems

Multimedia documents in popular image and video sharing websites such as Flickr and Youtube are heterogeneous documents with diverse ways of representations and rich user-supplied information. In this paper, we investigate how the agreement among heterogeneous modalities can be exploited to guide data fusion. The problem of fusion is cast as the simultaneous mining of agreement from different modalities and adaptation of fusion weights to construct a fused graph from these modalities. An iterative framework based on agreement-fusion optimization is thus proposed. We plug in two well-known algorithms: random walk and semi-supervised learning to this framework to illustrate the idea …

A Secure Behavior Modification Sensor System For Physical Activity Improvement, Alan Price

CGU Theses & Dissertations

Today, advances in wireless sensor networks are making it possible to capture large amounts of information about a person and their interaction within their home environment. However, what is missing is how to ensure the security of the collected data and its use to alter human behavior for positive benefit.

In this research, exploration was conducted involving the "infrastructure" and "intelligence" aspects of a wireless sensor network through a Behavior Modification Sensor System. First was to understand how a secure wireless sensor network could be established through the symmetric distribution of keys (the securing of the infrastructure), and it involves …

In-Degree Dynamics Of Large-Scale P2p Systems, Zhongmei Yao, Daren B. H. Cline, Dmitri Loguinov

Computer Science Faculty Publications

This paper builds a complete modeling framework for understanding user churn and in-degree dynamics in unstructured P2P systems in which each user can be viewed as a stationary alternating renewal process. While the classical Poisson result on the superposition of n stationary renewal processes for n→∞ requires that each point process become sparser as n increases, it is often difficult to rigorously show this condition in practice. In this paper, we first prove that despite user heterogeneity and non-Poisson arrival dynamics, a superposition of edge-arrival processes to a live user under uniform selection converges to a Poisson process when …

Tracking And Recognizing Multiple Faces Using Kalman Filter And Modularpca, Jacob Foytik, Praveen Sankaran, Vijayan Asari

Computer Science Faculty Publications

Real-time tracking and recognizing multiple faces in complex environments has the ability to provide efficient security automation to large areas. Previous research has shown that Kalman filter techniques paired with the traditional face detection methods can be used to track one or more faces in a viewing region, but prove unreliable under variant conditions due to the inability to reliably distinguish between multiple trackers. A real-time face tracking and recognition system is presented that is capable of processing multiple faces simultaneously. The proposed system utilizes the Kalman filter for tracking and uses a low-level recognition system to properly distinguish between …

Is There A Core Set Of Skills For Visual Analysis Across Different Imaging Technologies?, Craig Hm Donald

Australian Security and Intelligence Conference

This research examines the technological challenges posed by security imaging technologies for human visual analysis of images. Imaging technologies are increasing becoming part of an overall security strategy that incorporates a range of camera technologies, x-ray technologies, and other electromagnetic imaging such as millimetre wave and terahertz based systems. Still and video image types are increasingly becoming presented to viewers or screeners in forms that are only representative in nature and highly abstract, and the use of filters is increasing the complexity of interpretation. Despite a range of factors that are being looked at to enhance visual analysis, the contribution …

Trends And Controversies: Ai, Virtual Worlds, And Massively Multiplayer Online Games, Hsinchun Chen, Yulei Zhang, W. S. Bainbridge, Kyong Jin Shim, N. Pathak, M. A. Ahmad, C. Delong, Z. Borbora, A. Mahapatra, J. Srivastava

Research Collection School Of Computing and Information Systems

The rich social media data generated in virtual worlds has important implications for business, education, social science, and society at large. Similarly, massively multiplayer online games (MMOGs) have become increasingly popular and have online communities comprising tens of millions of players. They serve as unprecedented tools for theorizing about and empirically modeling the social and behavioral dynamics of individuals, groups, and networks within large communities. Some technologists consider virtual worlds and MMOGs to be likely candidates to become the Web 3.0. AI can play a significant role, from multiagent avatar research and immersive virtual interface design to virtual world and …