Tactile Interface for Navigation in Underground Mines

Transcription

1 XVI Symposium on Virtual and Augmented Reality SVR 2014 Tactile Interface for Navigation in Underground Mines Victor Adriel de J. Oliveira, Eduardo Marques, Rodrigo Peroni and Anderson Maciel Universidade Federal do Rio Grande do Sul Instituto de Informática PO. Box 15064, CEP Porto Alegre - RS - Brazil

2 Summary Problem Tactile Communication Tactile Interface Design Icon Set Prototyping Perceptual Adjustment Analysis of Performance in Navigation Application Trial Results 2

3 Underground Mines 3

4 Underground Mines 4

5 Underground Mines 5

6 Underground Mines 6

7 Underground Mines 7

8 Vibrotactile Communication 8

9 Vibrotactile Communication 9

10 Vibrotactile Communication 10

11 Vibrotactile Communication 11

12 Design of the Tactile Display Eight electromechanical tactors were attached to pieces of Velcro and then positioned at equidistant locations 12

13 Design of the Tactile Display Tactile cues during navigation 13

14 Design of the Tactile Vocabulary The vocabulary design followed the four-step method proposed by Chan (2008) 14

15 Design of the Tactile Vocabulary The vocabulary design followed the four-step method proposed by Chan (2008) 15

16 Assessment of Tactile Vocabularies

17 Design of the Tactile Vocabulary The vocabulary design followed the four-step method proposed by Chan (2008) 17

18 Adjustment of Icon Set 18

19 Adjustment of Icon Set 19

20 Adjustment of Icon Set Factorial analysis of the created vocabularies. Factors are related to the interpretation of the tactile signals. 21

21 Adjustment of Icon Set 22

22 Adjustment of Icon Set 23

23 Design of the Tactile Vocabulary The vocabulary design followed the four-step method proposed by Chan (2008) 24

24 Perception in Navigation Sequences are more difficult to process during the navigation task

25 Perception in Navigation Factorial analysis of the remaining icons. Factors are related to the way that the patterns were made. 26

26 Perception in Navigation Factorial analysis of the remaining icons. Factors are related to the way that the patterns were made. 27

27 Vocabulary for Underground Navigation 28

28 Design of the Tactile Vocabulary The vocabulary design followed the four-step method proposed by Chan (2008) 29

29 Application Trial Navigation in underground mine 30

30 Application Trial Navigation in underground mine 31

31 Application Trial Navigation in underground mine Predefined routes in the virtual 3D representation of an underground mine. The distance between the beginning and the end of the route is the same for all scenarios. 32

32 Application Trial Tutorial GUI

33 Application Trial Vocabulary practice 34

34 Application Trial Underground navigation 35

35 Application Trial Underground navigation 36

36 Subjects 15 individuals (14 males) 4 Mining Engineering students 10 Computer Science students Mean age 25 years old (23-37)

37 Results 38

38 Results 39

39 Results 40

40 Results 41

41 Results 42

42 Results 43

43 Results Less collisions There were more collisions in previous experiments with different tactile vocabularies 1 was the maximum number of collisions during the navigation in the virtual mine Easier to learn and perceive Users who had performed previous experiments said that the redesigned vocabulary was easier to learn and to perceive during the navigation 44

44 Conclusion We presented the design and assessment of a usable tactile vocabulary for navigation The progressive perceptual adjustment of the icons allowed us to improve significantly the usability of our tactile vocabulary 45

45 Future Works To improve the tactile belt ergonomy To test navigation in physical environments To assess different ambient conditions and contexts 46

46 XVI Symposium on Virtual and Augmented Reality SVR 2014 Tactile Interface for Navigation in Underground Mines Thank you! Victor Adriel de J. Oliveira, Eduardo Marques, Rodrigo Peroni and Anderson Maciel contact: Universidade Federal do Rio Grande do Sul Instituto de Informática PO. Box 15064, CEP Porto Alegre - RS - Brazil