Mobility enhancement and assessment for a visual prosthesis
Dowling, Jason A. & Maeder, Anthony J. (2004) Mobility enhancement and assessment for a visual prosthesis. In Amini, Amir A. & Manduca, Armando (Eds.) SPIE Medical Imaging 2004: Physiology, Function, and Structure from Medical Images, 14-19 February 2004, San Diego.
This paper investigates methods of processing mobility related static images to enhance the effectiveness of a visual prosthesis system. Eight images were processed into 50x50 pixel binary, greyscale, Sobel and Canny edge detected images. 10 subjects were asked 5 mobility related identification tasks for each (randomly ordered) image. Results indicate that edge detection may be useful at this resolution. However, there was not a significant difference found between the results achieved using the Canny and Sobel algorithms. These results support the development of an adaptive device. A mobility display framework has been proposed to assist in this development. Future work will focus on processing image sequences and the development of a visual prosthesis simulation device.
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