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LampMark utilizes the ubiquitous streetlamps to indicate the route signs by adding a mask at night. People easily lose their direction, especially during night time. Actually, it is hard for pedestrians to recognize the text on the signboards along the roads. LampMark utilizes the streetlamps' light to project the route signs or location names on the ground. Therefore, this kind of streetlamp can serve as a normal illuminator and sign indicator at the same time.
Kai-Yin Cheng, Yi-Jong Cheng, Ming-Yang Yu