OPEN ACCESS
sensors ISSN 1424-8220 www.mdpi.com/journal/sensors Supplementary Information
A Context-Aware-Based Audio Guidance System for Blind People Using a Multimodal Profile Model. Sensors 2014, 14, 18670-18700 Qing Lin and Youngjoon Han * Electronic Engineering Department, Soongsil University, 511 Sangdo-Dong, Dongjak-Gu, Seoul 156-743, Korea; E-Mail:
[email protected] * Author to whom correspondence should be addressed; E-Mail:
[email protected]; Tel.: +82-02-820-0699.
1. Fuzzy Rules Used in the Fuzzy Inference Model Table S1. Fuzzy rules definition. No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 No. 16 17 18 19 20
ρ low low low low low low low low low low low low low low low ρ low low low low low
d near near near near near near near medium medium medium medium medium medium medium medium d medium far far far far
φ small small small medium medium medium large small small small medium medium medium large large φ large small medium medium medium
v slow medium fast slow medium Fast any slow medium fast slow medium fast slow medium v fast any slow medium fast
c normal danger danger normal danger danger danger safe safe normal normal normal danger normal danger c danger safe normal normal danger
2 Table S1. Cont. No. 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 No. 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61
ρ low low low medium medium medium medium medium medium medium medium medium medium medium medium medium medium medium medium medium medium medium high high high high ρ high high high high high high high high high high high high high high high
d far far far near near near near near medium medium medium medium medium medium medium far far far far far far far near near near near d near medium medium medium medium medium far far far far far far far far far
φ large large large small small small medium larger small medium medium medium larger larger larger small small small medium large large large small small small medium φ large small medium medium medium large small small small medium medium medium large large large
v slow medium fast slow medium fast any any any slow medium fast slow medium fast slow medium fast any slow medium fast slow medium fast any v any any slow medium fast any slow medium fast slow medium fast slow medium fast
c normal normal danger normal normal danger danger danger normal normal normal danger normal danger danger safe safe normal normal normal normal danger normal danger danger danger c danger normal normal danger danger danger safe normal normal safe normal normal normal normal danger
3 2. A Fuzzy Inference Process for Walking Context Figure S1. An example of fuzzy inference process.
4 3. Walking Context Fuzzy Inference Solution Space Figure S2. Fuzzy inference solution space.
5 Figure S2. Cont.
6 4. Acoustic Beeper Message Definition Figure S3. Beeper message definition using polar array.
Table S2. Beeper message definition in different polar zones. −12° ～ 12° Center Zone 12° ～ 36° Right-1 Zone 36° ～ 60° Right-2 Zone −12° ～ −36° Left-1 Zone −36° ～ −60° Left-2 Zone
