CS) Informative
Maps on PDA-phones Chui Pui Ling Page 6
1.3.4. Zoom in & out The map with an indication of optimal path can be zoomed in.
1.3.5. Photo display A photo will be shown to indicate the user with the current appropriate walking direction.
1.3.6. Audio instruction User can listen to the audio instruction to understand how he can get to the destination.
CS) Informative Maps on PDA-phones
Chui Pui Ling Page 7
2. Background Literature 2.1. Maps How to prepare a
trip on our own Traditionally, it was no doubt that travelers would buy guidebooks from bookshops. A travel guidebook could then provide travelers with the information of a particular place and maps teaching them how to get there. The main reason for the popularity of guidebooks is that they are portable and user-friendly. In this st century, information can be achieved everywhere. Many books are migrated into electronic books and it was no exception for travel guidebooks. Nevertheless, while the textual information could be easily
migrated into electronic, on the contrary, the geographical maps require much effort. With important elements
portrayed on apiece of paper, traditional maps are abstractions of our real world. To make an electronic informative map possible, techniques are required for representing the spatial elements digitally.
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