1. ® Sponsored by Guiding Blind People in Indoor Space - A Use-Case of IndoorGML 95th OGC Technical Committee Boulder, Colorado USA Ki-Joune Li 2 June 2015

2. OGC ® Movie- Her(2013) 2

3. OGC ® Motivations Services for visual impaired people. –The services are mostly limited in outdoor space. Navigation Map Services for Indoor Space 3

4. OGC ® Contents –Requirements –Key Design –Data Model –Implementation –Conclusion 4

5. OGC ® Requirements –Indoor positioning (<30cm) So far, no Indoor positioning method provides such a high accuracy Braille Block as an alternative –Voice-Oriented Indoor map for navigation –Guide for the visual impaired people –No extra-devices except smartphone –Interoperability and Standards 5

6. OGC ® Key Design Issues –Braille block for Assisting Indoor Positioning –Movement Patterns of Blind People Separation of Stopping and Movement Straight walking (not walking in curve) –Landmark Information –Using Smartphone with Voice-based UI –Using IndoorGML as International Standard 6

7. OGC ® Braille block for Assisting Indoor Positioning Dot Block Stripe Block 7

8. OGC ® Movement Patterns of Blind People n1n1 n2n2 n3n3 n1n1 n2n2 n3n3 n 22 e1e1 e2e2 e 11 e 12 e 22 e 21 ege e 1 is split to e 11 and e 12 edge e 2 is split to e 21 and e 22 node n 2 is split to n 21 and n 22 n 21 new edge e 3 and e 4 are added e4e4 e3e3 8

9. OGC ® Landmark Information n1n1 n3n3 n22n22 e 11 e 12 e 22 n21n21 e 32 e 31 e 21 e 12 : - B is on your left, - A is on your right, and - C is on your left over the destination B A C D (Case 1) : left side on the path (Case 2) : right side on the path (Case 3) : left side over the path (Case 4) : right side over the path (Case 2) (Case 1) (Case 2) (Case 3) (Case 4) (Case 2) (Case 1) 9

10. OGC ® Using Smartphone with Voice-based UI TextToSpeech 10

11. OGC ® Using IndoorGML as international standard > IndoorCore::SpaceLayer > IndoorCore::Transition > IndoorCore::State > IndoorCore::MultiSpaceLayer > IndoorCore::InterLayerConnection 0..* 2 connects 2 interConnects 0..* edges nodes 0..* 1..* spaceLayers interEdges 0..* 11

12. OGC ® Data Model –Data model for VIM –Phase of making VIM network –Sample case constructing network 12

13. OGC ® Data Model for VIM > IndoorCore::State > IndoorCore::Transition connects 2 Starting Node Ending Node 0..* > VIMNavi::Node 0..* > VIMNavi::Landmark > VIMNavi::Edge - Navigation Instruction - Landmark Instruction 0..* Landmark Topology > Landmark Topology - onLeft - onRight - overLeft - overRight Located At 1..1 1..* connects IndoorGML VIM - Topology 13

14. OGC ® VIM Part Topographic IndoorGML Layer Phase of Making VIM Network s1s1 s2s2 s3s3 s 11 s 12 s 21 s22s22 s` 4 n1n1 n2n2 n3n3 n4n4 n5n5 n6n6 n7n7 n8n8 IndoorGML Network Network of considering route of the Visually Impaired Navigation Layer For the Visually Impaired Subspacing Separating instructions Add Landmark Information n9n9 Braille Block IndoorGML Part Layer 14

15. OGC ® Sample Case 15

16. OGC ® Network of considering route of the Visually Impaired s1s1 s2s2 s4s4 s5s5 s5s5 s6s6 v2v2 v3v3 v4v4 v5v5 v1v1 v8v8 v9v9 v7v7 v 10 v6v6 v 11 16

17. OGC ® v2v2 v3v3 v4v4 v5v5 v1v1 v8v8 v9v9 v7v7 v10v10 v6v6 v11v11 Network of considering route of the Visually Impaired 17

18. OGC ® v2v2 v3v3 v5v5 v1v1 v8v8 v9v9 v7v7 v 10 v6v6 v 11 n1n1 n2n2 Stair Up/Down n3n3 Recognize Stair/ Enter braille block n4n4 n6n6 n5n5 v4v4 n7n7 Navigation Layer For the Visually Impaired - Separating Instructions 18

19. OGC ® v5v5 v8v8 v9v9 v7v7 v10v10 v6v6 v11v11 n1n1 n2n2 n3n3 n4n4 n6n6 n5n5 n7n7 n8n8 n9n9 n10n10 n11n11 n12n12 n13n13 n14n14 n15n15 n16n16 n16n16 Navigation Layer For the Visually Impaired - Separating Instructions 19

20. OGC ® n1n1 n2n2 n3n3 n4n4 n6n6 n5n5 n7n7 n8n8 n9n9 n10n10 n11n11 n12n12 n13n13 n14n14 n15n15 n16n16 n16n16 Navigation Layer For the Visually Impaired - Add Landmark 20

21. OGC ® Implementation –Operation Flow –Test environment –Video 21

22. OGC ® Sample of user-interface 22

23. OGC ® Cheong-gu subway station Seoul Test environment A B Find a path from A to B 23

24. OGC ® Implementing video 24

25. OGC ® –Indoor navigation using braille block networks –Voice-based instruction by Smartphone Accessibility function –Data Model extended from IndoorGML Core Module –A very beginning prototype Summary 25