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A Stereo Image Processing System for Visually Impaired

Authors: G. Balakrishnan, G. Sainarayanan, R. Nagarajan, Sazali Yaacob

Abstract:

This paper presents a review on vision aided systems and proposes an approach for visual rehabilitation using stereo vision technology. The proposed system utilizes stereo vision, image processing methodology and a sonification procedure to support blind navigation. The developed system includes a wearable computer, stereo cameras as vision sensor and stereo earphones, all moulded in a helmet. The image of the scene infront of visually handicapped is captured by the vision sensors. The captured images are processed to enhance the important features in the scene in front, for navigation assistance. The image processing is designed as model of human vision by identifying the obstacles and their depth information. The processed image is mapped on to musical stereo sound for the blind-s understanding of the scene infront. The developed method has been tested in the indoor and outdoor environments and the proposed image processing methodology is found to be effective for object identification.

Keywords: Blind navigation, stereo vision, image processing, object preference, music tones.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1075126

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References:


[1] World Health Organization (2004) Available: http://www.who.int//mipfiles/2400/AllenFoster.pdf
[2] F. Wong, R. Nagarajan, S. Yaacob, A. Chekima and N. E. Belkhamza, "Electronic travel aids for visually impaired - A guided tour", Proceedings of Conference in Engineering in Sarawak, Malaysia, pp. 377-382, 2000.
[3] R. M. Fish, "Auditory display for the blind", US Patent No. 3800082, 1974.
[4] C. Capelle, C. Trullemans, "A Real-Time Experimental Prototype for Enhancement of Vision rehabilitation Using Auditory Substitution", IEEE Trans. on Biomedical Engineering, Vol. 45, pp. 1279-1293, 1998.
[5] J. Borenstein and I. Ulrich, "The GuideCane - A computerized travel aid for the active guidance of blind pedestrians", Proceedings of IEEE International Conference on Robotics and Automation, Albuquerque, NM, pp. 1283-1288, 1997.
[6] S. Shraga, I. Ulrich and J. Borenstein, "Computerized Obstacle Avoidance Systems for the Blind and Visually Impaired", Intelligent Systems and Technologies in Rehabilitation Engineering. CRC Press, pp. 414-448, 2000.
[7] L. Kay, "Electronic aids for blind person: an interdisciplinary subject", IEE proceeding, Vol. 7, pp. 559-576, 1984.
[8] P. B. L. Meijer, "An Experimental System for Auditory Image Representations", IEEE Transactions on Biomedical Engineering, Vol. 39, pp. 112-121, 1991.
[9] G. Sainarayanan, "On Intelligent Image Processing Methodologies Applied to Navigation Assistance for Visually Impaired", Ph. D Thesis, University Malaysia Sabah, 2002.
[10] M. Z. Brown and G. D. Hager, "Advances in computational stereo", IEEE Trans. Pattern Analysis and Machine Intelligence, Vol. 25, pp. 993-1008, 2003.
[11] M. Capp and P. Picton, "The Optophone: an electronic blind aid", Engineering Science and education Journal, Vol. 9, No. 3, pp. 137-143, 2000.
[12] J. S. Zelek, S. P. Bromley, D. Aamar and D. Thompson, "A haptic glove as a tactile vision sensory substitution for way finding", Journal of Visual Impairment and Blindness, pp 621-632, 2003.
[13] Y. Kawai and F. Tomita, "A support system for visually impaired persons to understand three-dimensional visual information using acoustic interface", IEEE conference on Pattern Recognition, Vol. 3, pp. 974-977, 2002.
[14] Xybernaut Wearable computer (2004), Available: http://www.xybernaut.com
[15] J. Canny, "A Computational Approach to Edge Detection", IEEE Trans. Pattern Analysis and Machine Intelligence, Vol. 6, pp. 721-741, 1984.
[16] U. R. Dhond and J. K. Aggarwal, "Structure from stereo", IEEE Trans. on systems, man and cybernatics, vol. 19, pp. 1489 - 1510, 1989.
[17] D. A. Forsyth and J. Ponce, "Computer Vision: A modern approach", Prentice-Hall, New Jersey, 2002.
[18] T. J. Ross, "Fuzzy logic with engineering applications", McGraw-Hill, NewYork, 1997.
[19] R. Elliott, "Fundamentals of music", Prentice-Hall, New Jersey, 1971.
[20] Twelve tone technique (2004), Available: http://en.wikipedia.org/wiki/ Twelve_tone_technique
[21] J. R. Pierce, "The Science of Musical Sound", W.H. Freeman & Company, Newyork, 1992.