ALBUQUERQUE, T. O.; http://lattes.cnpq.br/3240312598950238; ALBUQUERQUE, Tiago Oliveira de.
Abstract:
On the context of product development, the usability evaluation stage is
considered a complex and time consuming one. The time required to the
analysis of each conducted test tends to be some times larger than the time
required for the conduction of the test itself. Nevertheless, usability evaluation
gathers the attention of an ever growing number of researchers. In every new
research, the process of usability evaluation is either customized for a more
specific case or more generic casts are created to the evaluation processes.
Anyhow, a set of stages and recommendations remain getting propagated. It is
the example of video recording. In such context, this research proposes a novel
approach to automatic summarization of usability test session videos.
Considering the analysis of such videos is generally conducted with little to
none automation. The time required to finish the process is too long. Therefore,
it is found the need to reduce the time associated to the analysis of usability test
session videos. The approach described in this research seeks to offer
summarized videos to the usability evaluator from the usability test session
videos. The summarization process of this research is founded upon Active
Appearance Models (AAM), and on a semantically adequate measure for the
comparison of facial expressions. The validation of the developed approach
consisted on the conduction of a usability test. The test was conducted in real
work conditions. From the usability tests were extracted quantitative
indicators. More indicators are extracted automatically by a system developed
with the proposed approach. A comparative analysis of such indicators is the
stepping stone for the validation of the proposed approach.