Student Projects | MAT 200C | Spring 2010
Instructor: Stephen Travis Pope
Teaching Assistant: Ryan Michael McGee

Brian Hansen

Design Considerations of the 200C Multi Touch Table
It was truly a team effort in constructing a multi touch table for our 200C project. The team did well at coming together to unify a vision for table design and functionality and then separating to contribute as individuals to its construction. The aspects of the table construction were divided between software and hardware design. This paper overview's the design considerations that went into hardware construction of the multi-touch table.
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Modeling Spacialized Sensory Dissonance
Issues of consonant and dissonant sonorities in music have defined its compositional practices for centuries. Musical issues continue to arise as new compositional styles and musical vocabularies emerge, constantly forcing composers and listeners to reevaluate what is consonant, what is dissonant, and how are musical relationships formed between the two. Contributing to our understanding of consonant and dissonant sonorities is the quantification of sensory dissonance. There has been much research done in developing a method to quantify the dissonance between two tones. All methods consider the physical and psychoacoustical aspects of sonic perseption. However, these models are typically without dimension, as they do not consider sound as it occurs in space. This paper proposes a method for calculating the dissonance between sounding tones, taking into consideration their spacial relationship to the listener.
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Gustavo Rincon

Human Computer Interaction: Design: Touch Space to Virtual Architectural/Art Space

This summary attempts a focused survey of the concepts of touch sensing technologies from 2 Dimensional touch surfaces to 3 Dimensional touch space. The study of interaction of the body and signals has evolved throughout the history of technologies that extend human capacity. Human Computer Interaction is a study of how Humans and computers interact. Evolving technologies are mimicking and evolving our natural experiences. With the advent of different types of technology in dimensional space (X, Y, and Z planes), multimodal spaces evolve data from the visual to the enhanced spatial synaesthetic realm. Can the invisible space be inscribed with digital data to create enhanced virtual materiality?
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Ritesh Lala

Object Tracking in the IR Domain for Multi-Touch Surfaces
The concept of Natural User Interfaces is becoming more and more widespread from applications in user appliances to research instruments. In this domain of technology where user experiences range from simple touch screens to fluid interfaces, multi-touch surfaces have an important role to play. For some they might promise of a more integrated, interactive and intuitive multi-user solution, while for others they might pose a situation of unwanted change. This paper takes a positive approach towards adapting to this technology and investigates to a certain extent, the mechanics of it. It also presents a brief overview of certain applications for such an interface and how they can be expanded. It is concluded that touch interfaces provide a sense of instant feedback and a feeling of prompt reaction which makes it a richer and faster experience. Further investigations and user feedbacks would lead to more streamlined applications that could take collaborative software applications to the next level.
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John Delaney

Gestural Interaction and Haptics for a more Robust Reality Based Interface
In the physical world, an interface occurs at the edge where two materials meet, such as between two fluids, air and water. In computer science an interface refers to the interaction between two componets such as the graphics card and the main processor, or the user and the keyboard. The modern computer interface was born out of a technological environment that perceives the natural and built environments as black and white. The modern notion of an interface assumes that the user is interacting with something that isn't interaced rather than interacted with. Computer interfaces have evolved in the 60 years of computing. Once upon a time, scientists in labs had to physically punch programs on a card to interface with computers. Now a majority of the world's population has a computer in their pockets, but since the first Macintosh desktop computer, the desktop interface paradigm has remained unaltered as the defacto interface for most computer devices. With the increasing prevalence of ubiquitous sensor technologies such as accelerometers and digital cameras and processors capable of hadling the incoming data, computers are finally able to move into a new era of Reality Based Computing, in which a user can interact with the computer as they would react to their natural environment. For our project in MAT 200c we set out to build a mult-touch table as a research platform with which to research Reality Based Interfaces. In this paper I will discuss the configuration of the table as well two areas of research that would augment the table's current functionality: haptic feedback and single camera tracking.
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Qian Liu

TUIO, Touchlib, reacTIVision and Community Core Vision
As the development of all different kinds of multi-touch technology, more and more multi-touch related software come into people's sight. This paper introduced TUIO, a widely used protocol for multi-touch technology based on OSC (open sound control). And compared popular software for detecting multi-touch events: Touchlib, reacTIVison and Community Core Vision from a user's point of view.
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Reza Ali

Overviews of OSC/TUIO Protocols, Touch Table Demos and Mobile Technology
We live in a digital world where we are surrounded by technologies that have been designed to augment our lives and experiences. These technologies help us communicate, share media, learn, create, research and interact with each other. Mobile devices, such as laptops, Netbooks, mobile phones, and tablet computers, have changed the way people use technology and live their lives by enabling access to services, such as email, text messaging, multimedia messaging, internet access, video chat, video calling, Wi-Fi connectivity, gaming, instant messaging, Bluetooth and infrared communication, online social networks, GPS navigation, streaming media, audio and video playback, media capture (audio, image, video), information retrieval (i.e. online searches), content retrieval, location based services, data storage, tethering (serving as a wireless modem), and more, anywhere at anytime. This paper will provide a concise overview of mobile technology; specifically focusing on the mobile phones and its: technological origins and current ubiquity, services and applications in society, sensor technology and limitations, and sociological implications of this technology
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Matthew Crossley

Methods of Single-Channel Music Source Separation
Music source separation refers to the process of recovering original music sources from a mixture of two or more musical sound sources. Although music source separation is important even when the number of mixture channels is high (e.g. in stereo or surround sound mixtures), this review is focused on music source separation when the number of mixtures is limited to a single-channel.
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