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In the unfamiliar city, travelers often have to use the paper map.
It takes a lot of time to find that needed landmarks from the map with full of symbols and landmarks.
If you could filter out unnecessary mark color and retain who need that such as: Sightseeing regional, transportation, network, hotels, and other important landmarks.
Emergency situation could be searched quickly by related position, such as: Hospital ,Police.
Landmarks marker with color , and use paper card on behalf of the colors and landmarks throughout filtered optical color of technology
Ming Chi University of Technology
CHIN WEN WU
CHIEN YU HUNG LIU CHIN LUNG TSAI CHENG HUI