GVU Technical Report Number:
GIT-GVU-95-17
Title:
Video Temporal Compression Techniques to Facilitate Usability Evaluation
Authors:
Paulo Santos
Scott Hudson
Mark Guzdial
Albert Badre
Abstract:
Video of users' interaction with interfaces is often collected as part of
the usability evaluation process. Analyzing the video is a
time-comsuming task, because of the length of the video. One way to
reduce the time required to view the video is to perform a temporal
compression of the video, before or during playback. Such compression,
however, has to be done is a way that minimizes loss of information.
This paper present a video compression technique that has the ability to
reduce the time required to view a session by a factor of 10 or higher,
yet maintains and highlights the features normally sought during a usability
analysis. The paper introduces an algorithm, and outlines a preliminary
study on the usability of our video compression.
Keywords:
Usability, video, video compression, evaluation
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