Ideal 3D input device for a navigation aid for the visually impaired?

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  I started a open source project to develop a navigation aid for the visually impaired - http://navigationaid.codeplex.com/ . I need to take two critical decisions now.

  1) What should be the input device - Stereo camera or Camera with Laser Range finder or anything else. It should be affordable for a common man.

  2) Which is the ideal algorithm for object segmentation, which should work in a smartphone. Need to consider the limited processing power of smartphone.

  If you think there is a better forum to ask this question, please let me know.

  Friday, February 3, 2012 7:16 AM