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Design of Perceptualization Applications in Medicine
KTH, School of Computer Science and Communication (CSC), Human - Computer Interaction, MDI (closed 20111231).ORCID iD: 0000-0001-8093-5911
KTH, School of Computer Science and Communication (CSC), Human - Computer Interaction, MDI (closed 20111231).ORCID iD: 0000-0003-3743-100X
Norrköping Visualization and Interaction Studio, Linköping University, Norrköping.
2011 (English)Conference paper, Published paper (Refereed)
Abstract [en]

We are in this position paper presenting the experiences we have from three medical application projects. A user centered design methodology have been applied in order to ground the design in requirements gathered from field studies of professional medical environments. Methods used have been interviews, user observations in the work context and cooperative evaluations of prototypes. With a particular focus on haptic (touch) feedback, we are exploring how novel medical applications can benefit from feedback to more senses than vision and how needs can berevealed and transformed into effective design.

Place, publisher, year, edition, pages
2011. 42-47 p.
Keyword [en]
User centered design, perceptualization, haptics, medical
National Category
Human Computer Interaction
Identifiers
URN: urn:nbn:se:kth:diva-59547Scopus ID: 2-s2.0-84890705975OAI: oai:DiVA.org:kth-59547DiVA: diva2:475725
Conference
First workshop on Engineering Interactive Computing Systems for Medicine and Health Care (EICS4Med). Pisa, Italy - June 13, 2011
Note

QC 20130916

Available from: 2012-01-11 Created: 2012-01-11 Last updated: 2013-09-16Bibliographically approved
In thesis
1. Reflective Spatial Haptic Interaction Design Approaching a Designerly Understanding of Spatial Haptics
Open this publication in new window or tab >>Reflective Spatial Haptic Interaction Design Approaching a Designerly Understanding of Spatial Haptics
2013 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

With a spatial haptic interface device and a suitable haptic rendering algorithm, users can explore and modify virtual geometries in three dimensions with the aid of their haptic (touch) sense. Designers of surgery simulators, anatomy exploration tools and applications that involve assembly of complex objects should consider employing this technology. However, in order to know how the technology behaves as a design material, the designer needs to become well acquainted with its material properties. This presents a significant challenge today, since the haptic devices are presented as black boxes, and implementation of advanced rendering algorithms represent highly specialized and time consuming development activities. In addition, it is difficult to imagine what an interface will feel like until it has been fully implemented, and important design trade-offs such as the virtual object's size and stability gets neglected.

Traditional user-centered design can be interpreted as that the purpose of the field study phase is to generate a set of specifications for an interface, and only solutions that cover these specifications will be considered in the design phase. The designer might miss opportunities to create solutions that uses e.g. lower cost devices since that might require reinterpretation of the overarching goal of the situation with starting point in the technical possibilities, which is unlikely without significant material knowledge. As an example, a surgery simulator designed in this thesis required a high cost haptic device to render adequate forces on the scale of human teeth, but if the design goal is reinterpreted as creating a tool for learning anatomical differences and surgical steps, an application more suitable for the lower cost haptic devices could be crafted. This solution is as much informed by the haptic material "speaking back to" the designer as by field studies.

This licentiate thesis will approach a perspective of spatial haptic interface design that is grounded in contemporary design theory. These theories emphasizes the role of the designer, who is not seen as an objective actor but as someone who has a desire to transform a situation into a preferred one as a service to a client or greater society. It also emphasizes the need for crafting skills in order to innovate, i.e. make designed objects real. Further, it considers aesthetic aspects of a design, which includes the subtle differences in friction as you move the device handle, and overall attractiveness of the device and system.

The thesis will cover a number of design cases which will be related to design theory and reflected upon. Particular focus will be placed on the most common class of haptic devices which can give force feedback in three dimensions and give input in six (position and orientation). Forces will be computed and objects deformed by an volume sampling algorithm which will be discussed. Important design properties such as stiffness, have been identified and exposed as a material for design. A tool for tuning these properties interactively has been developed to assist designers to become acquainted with the spatial haptic material and to craft the material for a particular user experience.

Looking forward, the thesis suggests the future work of making spatial haptic interfaces more design ready, both in software and hardware. This is proposed to be accomplished through development of toolkits for innovation which encapsulate complexities and exposes design parameters. A particular focus will be placed on enabling crafting with the haptic material whose natural limitations should be seen as suggestions rather than hinders for creating valuable solutions.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2013. vii, 49 p.
Series
Trita-CSC-A, ISSN 1653-5723 ; 2013:08
National Category
Human Computer Interaction
Identifiers
urn:nbn:se:kth:diva-128609 (URN)
Presentation
2013-09-26, F3, Lindstedtsvägen 26, KTH, Stockholm, 09:10 (English)
Opponent
Supervisors
Note

QC 20130916

Available from: 2013-09-16 Created: 2013-09-16 Last updated: 2013-09-16Bibliographically approved

Open Access in DiVA

No full text

Other links

Scopushttp://www.cs.swansea.ac.uk/EICS4Med/images/papers/eics4med%2008.pdf

Authority records BETA

Forsslund, JonasSallnäs Pysander, Eva-Lotta

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