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On the utility of 3D hand cursors to explore medical volume datasets with a touchless interface.

dc.contributor.authorLopes, S
dc.contributor.authorParreira, F
dc.contributor.authorPaulo, F
dc.contributor.authorNunes, V
dc.contributor.authorRego, A
dc.contributor.authorNeves, C
dc.contributor.authorRodrigues, S
dc.contributor.authorJorge, A
dc.date.accessioned2018-04-12T14:43:29Z
dc.date.available2018-04-12T14:43:29Z
dc.date.issued2017
dc.description.abstractAnalyzing medical volume datasets requires interactive visualization so that users can extract anatomo-physiological information in real-time. Conventional volume rendering systems rely on 2D input devices, such as mice and keyboards, which are known to hamper 3D analysis as users often struggle to obtain the desired orientation that is only achieved after several attempts. In this paper, we address which 3D analysis tools are better performed with 3D hand cursors operating on a touchless interface comparatively to a 2D input devices running on a conventional WIMP interface. The main goals of this paper are to explore the capabilities of (simple) hand gestures to facilitate sterile manipulation of 3D medical data on a touchless interface, without resorting on wearables, and to evaluate the surgical feasibility of the proposed interface next to senior surgeons (N=5) and interns (N=2). To this end, we developed a touchless interface controlled via hand gestures and body postures to rapidly rotate and position medical volume images in three-dimensions, where each hand acts as an interactive 3D cursor. User studies were conducted with laypeople, while informal evaluation sessions were carried with senior surgeons, radiologists and professional biomedical engineers. Results demonstrate its usability as the proposed touchless interface improves spatial awareness and a more fluent interaction with the 3D volume than with traditional 2D input devices, as it requires lesser number of attempts to achieve the desired orientation by avoiding the composition of several cumulative rotations, which is typically necessary in WIMP interfaces. However, tasks requiring precision such as clipping plane visualization and tagging are best performed with mouse-based systems due to noise, incorrect gestures detection and problems in skeleton tracking that need to be addressed before tests in real medical environments might be performed.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationJ Biomed Inform. 2017 Aug;72:140-149pt_PT
dc.identifier.doi10.1016/j.jbi.2017.07.009pt_PT
dc.identifier.issn1532-0480
dc.identifier.urihttp://hdl.handle.net/10400.10/1986
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.subjectThree-dimensional imagingpt_PT
dc.subjectUser-computer interfacept_PT
dc.subjectGesturespt_PT
dc.titleOn the utility of 3D hand cursors to explore medical volume datasets with a touchless interface.pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceOrlandopt_PT
oaire.citation.endPage149pt_PT
oaire.citation.startPage140pt_PT
oaire.citation.titleJournal of Biomedical Informaticspt_PT
oaire.citation.volume72pt_PT
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT

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