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QuantiScale: A Study in Redesigning Interactions for Multi-Touch

: Ritter, F.; Issawi, J. al; Benten, S.


Bühler, Katja (Ed.) ; European Association for Computer Graphics -EUROGRAPHICS-:
Eurographics Workshop on Visual Computing for Biology and Medicine, EG VCBM 2015 : Chester, UK, September 14 - 15, 2015
Goslar: Eurographics Association, 2015
ISBN: 978-3-905674-82-8
Workshop on Visual Computing for Biology and Medicine (VCBM) <5, 2015, Chester>
Fraunhofer MEVIS ()

We investigate the performance of QuantiScale, a new multi-touch interaction technique for the quantification of distances in medical images and discuss the benefits and prospects of redesigning interactions with multi-touch devices. Taking advantage of the multi-touch capabilities, QuantiScale behaves like a tape measure, but automatically adjusts the view onto the measured object to improve precision and speed. The technique has been studied in a real-world scenario measuring the diameter of structures for the diagnostic reading of medical images and provides hints for the replacement of traditional mouse-based interaction with gestural interaction. Results of the quantitative evaluation indicate a high measurement precision particularly for small objects. Participants experienced QuantiScale as being more fun, natural, and intuitive in comparison to mouse-based interaction even though the subjective preference for speed and precision was still in favor of the mouse.