DETECTION OF EXIT NUMBER FOR THE BLIND AT THE SUBWAY STATION

Ho-Sub Yoon, Jae Yeon Lee, Eun-Mi Ji

Abstract

This paper presents an approach for detecting the exit number to enhance the safety and mobility of blind people while walking around subway station. It is extremely important for a blind person to know whether a frontal area is a correct exit number or not. In a crossing at each exit roads, the usual black exit number is painted with blue circle contour that have white background in Taejon subway station. An image-based technique has been developed to detect the isolated number pattern at the crossing roads. The presences of exit numbers are inferred by careful analysis of numeral width, height, rate, number of numerals, as well as bandwidth trend. If we have several candidates of numerals, we adapt to the OCR function. Experimental evaluation of the proposed approach was conducted using several real images with and without exit roads. It was found that the proposed technique performed with good accuracy.

References

  1. Andreas Hub, Tim Hartter, Thomas Ertl, “Interactive Tracking of Movable Objects for the Blind on the Basis of Environment Models and Perception-Oriented Object Recognition Methods”, 2006 .
  2. Andreas Hub, Tim Hartter, Thomas Ertl, "Interactive Tracking of Movable Objects for the Blind on the Basis of Environment Models and Perception-Oriented Object Recognition Methods", 2006 .
  3. A. Zandifar, R. Duraiswami, A. Chahine, and L. Davis, "A Video Based Interface to Textual Information for the Visually Impaired", IEEE 4th ICMI, 2002, pp.325-330.
  4. A. Zandifar, R. Duraiswami, A. Chahine, and L. Davis, “A Video Based Interface to Textual Information for the Visually Impaired”, IEEE 4th ICMI, 2002, pp.325-330.
  5. B. Thylefors, A. D. Negrel, R. Pararajasegaram, and K. Y. Dadzie, “Global data on blindness,” Bull. WHO, vol. 73, no. 1, pp. 115-121, Jan. 1995.
  6. B. Thylefors, A. D. Negrel, R. Pararajasegaram, and K. Y. Dadzie, "Global data on blindness," Bull. WHO, vol. 73, no. 1, pp. 115-121, Jan. 1995.
  7. "Blindness and visual disability: Seeing ahead projections into the next century," WHO Fact Sheet No. 146, 1997.
  8. “Blindness and visual disability: Seeing ahead projections into the next century,” WHO Fact Sheet No. 146, 1997.
  9. C. A. Shingledecker and E. Foulke, “A human factor approach to the assessment of mobility of blind pedestrians,” Hum. Factor, vol. 20, no. 3, pp. 273-286, Jun. 1978.
  10. C. A. Shingledecker and E. Foulke, "A human factor approach to the assessment of mobility of blind pedestrians," Hum. Factor, vol. 20, no. 3, pp. 273-286, Jun. 1978.
  11. Hub, A., Diepstraten, J., Ertl, T. "Design and Development of an Indoor Navigation and Object Identification System for the Blind". Proceedings of the ACM SIGACCESS conference on Computers and accessibility, Atlanta, GA, USA, Designing for accessibility, 147-152, 2004.
  12. Hub, A., Diepstraten, J., Ertl, T. “Design and Development of an Indoor Navigation and Object Identification System for the Blind”. Proceedings of the ACM SIGACCESS conference on Computers and accessibility, Atlanta, GA, USA, Designing for accessibility, 147-152, 2004.
  13. K. Matsuo, K.Ueda and M.Umeda, “Extraction of Character String from Scene Image by Binarizing Local Target Area”, T-IEE Japan, Vol. 122-C(2), 2002, pp.232-241.
  14. K. Matsuo, K.Ueda and M.Umeda, "Extraction of Character String from Scene Image by Binarizing Local Target Area", T-IEE Japan, Vol. 122-C(2), 2002, pp.232-241.
  15. Kye Kyung Kim; Yun Koo Chung; Suen, C.Y, "Postprocessing scheme for improving recognition performance of touching handwritten numeral strings," 16th International Conference on Pattern Recognition, Volume 3, 2002 Page(s):327 - 330
  16. Kye Kyung Kim; Yun Koo Chung; Suen, C.Y, “Postprocessing scheme for improving recognition performance of touching handwritten numeral strings,” 16th International Conference on Pattern Recognition, Volume 3, 2002 Page(s):327 - 330
  17. L. Gu, N. Tanaka, T. Kaneko and R.M. Haralick, “The Extraction of Characters from Cover Images Using Mathematical Morphology”, IEICE Japan, D-II, Vol. J80, No.10, 1997, pp. 2696-2704.
  18. L. Gu, N. Tanaka, T. Kaneko and R.M. Haralick, "The Extraction of Characters from Cover Images Using Mathematical Morphology", IEICE Japan, D-II, Vol. J80, No.10, 1997, pp. 2696-2704.
  19. "OpenCV 1.0, Open Source Computer Vision Library," http://www.intel.com/technology/ computing/opencv/, 2006
  20. “OpenCV 1.0, Open Source Computer Vision Library,” http://www.intel.com/technology/ computing/opencv/, 2006
  21. R. H. Whitestock, L. Frank, and R. Haneline, “Dog guides,” in Foundations of Orientation and Mobility, B. B. Blasch and W. R. Weiner, Eds. New York: Amer. Foundation for the Blind, 1997.
  22. R. H. Whitestock, L. Frank, and R. Haneline, "Dog guides," in Foundations of Orientation and Mobility, B. B. Blasch and W. R. Weiner, Eds. New York: Amer. Foundation for the Blind, 1997.
  23. T. Yamaguchi, Y. Nakano, M. Maruyama, H. Miyao and T.Hananoi, "Digit Classification on Signboards for Telephone Number Recognition", Proc.of the ICDAR, 2003, pp.359-363.
  24. T. Yamaguchi, Y. Nakano, M. Maruyama, H. Miyao and T.Hananoi, “Digit Classification on Signboards for Telephone Number Recognition”, Proc.of the ICDAR, 2003, pp.359-363.
  25. Y. Liu, T. Yamamura, N. Ohnishi and N. Sugie, “Extraction of Character String Regions from a Scene Image”, IEICE Japan, D-II, Vol. J81, No.4, 1998, pp.641-650.
  26. Y. Liu, T. Yamamura, N. Ohnishi and N. Sugie, "Extraction of Character String Regions from a Scene Image", IEICE Japan, D-II, Vol. J81, No.4, 1998, pp.641-650.
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Paper Citation


in Harvard Style

Yoon H., Yeon Lee J. and Ji E. (2010). DETECTION OF EXIT NUMBER FOR THE BLIND AT THE SUBWAY STATION . In Proceedings of the International Conference on Computer Vision Theory and Applications - Volume 2: VISAPP, (VISIGRAPP 2010) ISBN 978-989-674-029-0, pages 543-546. DOI: 10.5220/0002892505430546


in Bibtex Style

@conference{visapp10,
author={Ho-Sub Yoon and Jae Yeon Lee and Eun-Mi Ji},
title={DETECTION OF EXIT NUMBER FOR THE BLIND AT THE SUBWAY STATION },
booktitle={Proceedings of the International Conference on Computer Vision Theory and Applications - Volume 2: VISAPP, (VISIGRAPP 2010)},
year={2010},
pages={543-546},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0002892505430546},
isbn={978-989-674-029-0},
}


in EndNote Style

TY - CONF
JO - Proceedings of the International Conference on Computer Vision Theory and Applications - Volume 2: VISAPP, (VISIGRAPP 2010)
TI - DETECTION OF EXIT NUMBER FOR THE BLIND AT THE SUBWAY STATION
SN - 978-989-674-029-0
AU - Yoon H.
AU - Yeon Lee J.
AU - Ji E.
PY - 2010
SP - 543
EP - 546
DO - 10.5220/0002892505430546