| Budget Amount *help |
¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000)
Fiscal Year 2014: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2013: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2012: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
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| Outline of Final Research Achievements |
Visible Light Communications-based (VLC) systems for indoor positioning via high-speed fish-eye lens-equipped cameras have been found to be ideally-suited to audio-based navigation systems for the visually-impaired, as well as control systems for mobile robots. Its LED lights are dual-purpose in nature, serving as an economical means of illumination and data-transmission, with users receiving digitized location information that is updated at 1-second intervals. Since the lights operate at pre-determined illumination levels, the system requires no additional space, or power. And, because the fish-eye lens-equipped camera commands a 180-degree view of the ceiling, the number of detectable LEDs increases, improving overall positioning accuracy. The receiver detects the LEDs from the ceiling image. Then, variations in intensity at the center of each LED are stored as light signals using the high-speed image sensor.
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