Using eye tracking to evaluate the user experience upon interactive television applications. / Uso de rastreamento do olhar na avaliação da experiência do tele-usuário de aplicações de TV interativa.

AUTOR(ES)
DATA DE PUBLICAÇÃO

2009

RESUMO

The introduction of digital terrestrial TV in Brazil allows users of free TV, the main source of information and entertainment in the country, to have access to services offered by Interactive TV (TVi). These users, who constitute a large and heterogeneous population, composed of individuals of varying degrees of education, age and knowledge of computers, will adopt a more proactive attitude regarding this means of communication traditionally collective and passive, raising the possibility of choice and supply of personalized content. The TVi becomes possible in the form of interactive applications sent together with audiovisual content of TV. In this scenario, the eye tracking, technique used for identifying positions observed by the user, presents itself as a powerful analysis tool with the ability to identify typical behavior of users, while producing conclusive, measurable and repeatable evidence about the activities observed during the interaction of users with applications. This research explores the use of eye tracking technique in the usability evaluation of TVis applications and examines how eye tracking can be used to obtain data about users and applications interaction. Hence, the eye tracking literature is investigated; identifying techniques and methods used to obtain the observed positions by users, and how to use these techniques in the usability evaluation. To study the use of the eye tracking in usability evaluations that took place in the environment of use of TVis applications, changes are made in the systems that collect the eye tracking data on this environment. Then, an experiment in which the eye tracking techniques are used together to the traditional usability evaluation techniques is developed to evaluate two TVis applications. The test procedures and the test environment are presented in details. The experiment results, with 30 users, using traditional and eye tracking evaluation techniques are compared, showing the contributions and limitations of eye tracking to explain usability problems and to identify users behaviors.

ASSUNTO(S)

usabilidade de software eye tracking teste e avaliação de programas televisão interativa rastreamento interactive tv usability evaluation métricas de software interação homem-máquina

ACESSO AO ARTIGO

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