GeoFARA (Geography Fieldwork Augmented Reality Application): design, development and evaluation

Transcription

1 GeoFARA (Geography Fieldwork Augmented Reality Application): design, development and evaluation Xiaoling Wang, Corné P.J.M. van Elzakker, Menno-Jan Kraak, Barend Köbben ICC 2017, 5 July, 2017 Washington, DC, USA Faculty of Geo-Information Science and Earth Observation (ITC)

2 What is AR (Augmented Reality)? Augmented reality = Augmentation Device generated contextual data Reality + Reality Physical real-world environment camera GPS wireless connectivity accelerometer compass Augmentation 2

3 What is GeoFARA? Augmented reality = Augmentation Mobile phone generated Geo-Information + Reality Enschede, the textile industry GeoFARA This research: AR on smartphones used outdoor in an educational geography fieldwork scenario. 3

4 Methodology User-Centered Design (ISO , the iterative process of UCD) 4

5 Methodology- User-Centered Design of GeoFARA 1. Analyzing context of use and user requirements 2. Conceptual design and prototype development 3. Usability evaluation 5

6 Methods and results of Stage 1- analyzing context of use and user requirements for GeoFARA Methods Context of use analysis Online survey Existing mobile AR application analysis Evaluation of the usage of an existing application Observation, survey, interview during actual educational fieldworks Use cases and task analysis Scenario of use and persona GeoFARA is needed and necessary; Potential users are interested; Earlier user requirements in current practices; In-depth and concrete user requirements; GeoFARA 6

7 User requirements results of user interface of GeoFARA 7

8 Stage 2 Conceptual design and prototyping GeoFARA Results Producing design solutions Conceptual design and prototype development of GeoFARA 8

9 Methods of conceptual designing and prototyping GeoFARA Methods Scenario-based design Rapid prototyping Working interface prototyping Design guidelines and standards Purposes To specify concrete functionalities for GeoFARA, and design contents, interfaces of GeoFARA To visually demonstrate how GeoFARA looks like To produce an operational prototype of GeoFARA for evaluation To ensure the consistency of the design of GeoFARA within mobile Android applications GeoFARA 9

10 The conceptual design and prototype of GeoFARA 10

11 The working interface prototype of GeoFARA (1/3) Functionalities of GeoFARA 1. Log in/out 2. Switch between AR view and map view 3. Take field note/photo/video 4. Augment each POI with images, old maps, texts in AR view 5. Navigate with in map view 6. Upload POIs from a web page 11

12 The working interface prototype of GeoFARA (2/3) Log in/out Switch between AR view and map view Take field note/photo/video Navigate within map view 12

13 The working interface prototype of GeoFARA (3/3) Upload POIs from a web page 13

14 Applying Wikitude SDK 14

15 Stage 3 - Evaluating usability of GeoFARA Mobile application usability: the extent to which a mobile application can be used by specified users (with various modalities of mobility) to achieve specified goals with effectiveness, efficiency, and satisfaction in a specified user context. GeoFARA s usability the extent to which GeoFARA can be used by students (when visiting the fieldwork area) to achieve spatial cognition with effectiveness, efficiency, and satisfaction. (A conceptual model of user-mobile device context-aware interactions, Li and Willis 2006) 15

16 Methods of evaluating usability of GeoFARA Methods Online survey Clickstream/Log capture Mobile eye tracking Thinking aloud Camera/video studies User observation Task analysis Post-task survey, interview Purposes To recruit representative users To capture the user s finger-touch on the phone screen (touch heat map) To record the user s eye movements among GeoFARA and environment To obtain the user s simultaneous ongoing thoughts To record the user s behavior and the whole process To observation the user s behavior To evaluate GeoFARA s effectiveness, and efficiency To collect the user s overall experience towards GeoFARA 16

17 Mobile eye tracking system 17

18 Upcoming work Piolet test Improve the usability evaluation setup Real field evaluation the usability of GeoFARA Improve the design of GeoFARA Deploy GeoFARA 18

19 Feedback? 19

20 Thank you for your attention! 20