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Natural User Interfaces and Usability Studies

Natural User Interfaces and Usability Studies. Janusz Sobecki. Agenda. Introduction Interaction styles Natural user interfaces Usability studies Eye tracking Engine HCI research. Introduction. The value of todays systems are dependent of their usability and UX quality ,

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Natural User Interfaces and Usability Studies

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  1. Natural User Interfaces andUsability Studies Janusz Sobecki

  2. Agenda • Introduction • Interactionstyles • Natural userinterfaces • Usabilitystudies • Eyetracking • Engine HCI research Natural User Interfaces andUsability Studies

  3. Introduction • The value of todayssystemsare dependent of theirusability and UX quality, • Natural userinterfaces (NUI) are one of the interactionstylesthataregetting mora and more popular • Aplication of NUI requires not onlyapplication of newtypes of input and output devices but alsoapplication of the newways of design and usabilityveryfication Natural User Interfaces andUsability Studies

  4. Interaction styles • Interactionstyles represent alternative design strategies for the user interface (UI) • Each style defines its own way of organizing the system functionality • We candistinguishatleastseveralinteractionstylescategories Natural User Interfaces andUsability Studies

  5. Interaction styles categories • Key-modal • Menu-based interaction • Question-and-answer • Function-key interaction • Voice-based interaction • Direct manipulation • Graphical direct manipulation • Forms fill-in • Linguistic • Command-line interaction • Text-based natural language • Virtual Reality • Natural User Interfaces Natural User Interfaces andUsability Studies

  6. Virtual reality definitions • VR is an immersive and interactive simulation of either reality-based or imaginary images and scenes • VR is a means of visualization, manipulation and interaction of a man-user with computers and complex data • VR is something „not formal” and „not real”, however something that is „true” and „existing” • VR is an application using different technologies such as: HMD (Head Mounted Display), Glove Input Device, Body Suit and Auditory Devices Natural User Interfaces andUsability Studies

  7. Natural User Interfaces • NUI is a system for HCI that the user operates through intuitive actions related to natural, everyday human behavior • NUI may be operated in manydifferent ways, depending on the purpose and user requirements • NUI mayrely on intermediary devices for interaction, whichare sometimes invisible to the user or so unobtrusive that they quickly seem invisible Natural User Interfaces andUsability Studies

  8. Examples of NUIs • Touchscreens • Kineticinterfaces • Speachrecognitionsystems • Brain-machneinterfaces Natural User Interfaces andUsability Studies

  9. Usability • Usability of a product, according to ISO 9241-11, is the extent to which the product can be used by specific users to achieve specific goals with effectiveness, efficiency, and satisfaction in a specific context of use. • Effectiveness expresses: ‘the accuracy and completeness with which users achieve specified goals’ • Efficiency considers: ‘the resources expended in relation to the accuracy and completeness with which users achieve goals’ • Satisfaction reveals the users: ’comfort and acceptability of use’ Natural User Interfaces andUsability Studies

  10. Software usability – ISO 9126 Natural User Interfaces andUsability Studies

  11. Usability veryfication methods • Therehavebeendevelopedmanydifferentmethods, whichmay be applied on differentstages of the system development Natural User Interfaces andUsability Studies

  12. Popular methods • One of the most popular methods applied in the „Test and measure” phaseare: • Diagnosticevaluationisuser based evaluation of a working system, where the primary objective is to identify usability problems • Heuristicevaluation: where usability specialists judge whether each element of a user interface follows a list of established usability heuristics Natural User Interfaces andUsability Studies

  13. Eyetracking • Eyetrackingisused as a meas of additonalmethod o the diagnosticevaluation • Eyetracking- process of measuring either the point ofgaze ("where we are looking") or the motion of an eyerelative to the head • Eyetracker- device for measuring eye positions and eyemovement Natural User Interfaces andUsability Studies

  14. Pupil and CR detection Natural User Interfaces andUsability Studies

  15. Eyetracking devices (ASL, Tobii, SMI) Tobii X2-60 Eyetracker SMI 6D glasses ASL Pan/Tilt i Headmountedtracker Natural User Interfaces andUsability Studies

  16. Eyetracking analysis • Gazetrail, heatmap, active regions Natural User Interfaces andUsability Studies

  17. HCI Engine research • Development of the newmethods of interactions in AugmentedReality • Development of the new VR devices • Deveoplent of the newusabilityveryficationmethodsfor naturalinterfaces • We havealreadycooperate with industry (i.e. Aduma S.A.) and academia (University of Tampere, The E. Geppert Academy of Art and Design and Uniersity of Wrocław) Natural User Interfaces andUsability Studies

  18. Thank you for your attention!

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