GVU Technical Report Number:
GIT-GVU-98-16
Title:
The Awareness-Privacy Tradeoff in Video Supported Informal Awareness: A
Study of Image-Filtering Based Techniques
Authors:
Qiang Alex Zhao
John T. Stasko
Abstract:
Media space applications that promote informal awareness in an
organization confront an inevitable paradox: the shared video
connections between offices and rooms that promote informal awareness
also can rob individuals of privacy. An important open problem in this
area is how to foster awareness of colleagues without the accompanying
loss of privacy. One proposal put forward is to filter the communicated
video streams rather than broadcasting clear video. In this article, we
describe several image-filtering techniques that may provide awareness
in informal group communication applications while blurring the details
of an individuals activities, thus potentially preserving more privacy.
We describe experiments to quantitatively and qualitatively assess the
degrees of awareness and accuracy that these filtering techniques provide.
Keywords: Informal group awareness, privacy, video,
image filter, real- time groupware
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