Title page for ETD etd-08252010-125536


Type of Document Dissertation
Author Wang, Yi
Author's Email Address samywang@gmail.com
URN etd-08252010-125536
Title Design and Evaluation of Contextualized Video Interfaces
Degree PhD
Department Computer Science
Advisory Committee
Advisor Name Title
Bowman, Douglas A. Committee Chair
Krum, David Committee Member
North, Christopher L. Committee Member
Quek, Francis K. H. Committee Member
Smith-Jackson, Tonya L. Committee Member
Keywords
  • visualization
  • Contextualized Videos
  • 3D
  • navigation
  • video surveillance
Date of Defense 2010-08-05
Availability unrestricted
Abstract
pictures. Videos have been increasingly used in multiple applications, including

surveillance, teleconferencing, learning and experience sharing. Since a video captures a

scene from a particular viewpoint, it can often be understood better if presented within a

larger spatial context. We call such interactive visualizations that combine videos with

their spatial context “Contextualized Videos”.

Over recent years, multiple innovative Contextualized Video interfaces have been

proposed to taking advantage of the latest computer graphics and video processing

technologies. These interfaces opened a huge design space with numerous design

possibilities, each with its own benefits and limitations. To avoid piecemeal

understanding of the design space, this dissertation systematically designs and evaluates

Contextualized Video interfaces based on a taxonomy of tasks that can potentially benefit

from Contextualized Videos.

This dissertation first formalizes a design space. New designs are created

incrementally along the four major dimensions of the design space. These designs are

then empirically compared through a series of controlled experiments using multiple

tasks. The tasks are carefully selected from a task taxonomy, which helps to avoid

piecemeal understanding of the effect of the designs. Our design practices and empirical

evaluations result in a set of design guidelines on how to choose proper designs according

to the characteristics of the tasks and the users. Finally, we demonstrate how to apply the

design guidelines to prototype a complex interface for a specific video surveillance

application.

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