A Semi-Automated Usability Evaluation Framework for Interactive Image Segmentation Systems

Language
en
Document Type
Article
Issue Date
2020-03-27
Issue Year
2019
Authors
Amrehn, Mario
Steidl, Stefan
Kortekaas, Reinier
Strumia, Maddalena
Weingarten, Markus
Kowarschik, Markus
Maier, Andreas
Editor
Publisher
Hindawi
Abstract

For complex segmentation tasks, the achievable accuracy of fully automated systems is inherently limited. Specifically, when a precise segmentation result is desired for a small amount of given data sets, semi-automatic methods exhibit a clear benefit for the user. The optimization of human computer interaction (HCI) is an essential part of interactive image segmentation. Nevertheless, publications introducing novel interactive segmentation systems (ISS) often lack an objective comparison of HCI aspects. It is demonstrated that even when the underlying segmentation algorithm is the same throughout interactive prototypes, their user experience may vary substantially. As a result, users prefer simple interfaces as well as a considerable degree of freedom to control each iterative step of the segmentation. In this article, an objective method for the comparison of ISS is proposed, based on extensive user studies. A summative qualitative content analysis is conducted via abstraction of visual and verbal feedback given by the participants. A direct assessment of the segmentation system is executed by the users via the system usability scale (SUS) and AttrakDiff-2 questionnaires. Furthermore, an approximation of the findings regarding usability aspects in those studies is introduced, conducted solely from the system-measurable user actions during their usage of interactive segmentation prototypes. The prediction of all questionnaire results has an average relative error of 8.9%, which is close to the expected precision of the questionnaire results themselves. This automated evaluation scheme may significantly reduce the resources necessary to investigate each variation of a prototype’s user interface (UI) features and segmentation methodologies.

Journal Title
International Journal of Biomedical Imaging
Volume
2019
Citation
International Journal of Biomedical Imaging 2019 (2019). <https://www.hindawi.com/journals/ijbi/2019/1464592/>
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