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A Location-Aware Map Visualization Based on Fisheye Projection System
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S. Abbasi *   , M. R. Malek |
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Abstract: (6963 Views) |
| Abstract
In a navigation system, map visualization based on vehicle’s location and environment plays an important role. Therefore, it is necessary to visualize useful information in an optimum method. One of the most important issues in mobile GIS applications and almost all location-based services is to serve an efficient and useful map for user. To this goal, the main idea from context awareness systems can be provided. In the framework of this paper, visualization method for navigation tasks is developed. The essential idea of this research is to use context-aware properties in map visualization. The main feature in such systems is to represent maps with respect to user requirements and specially user location. The idea is serving maps to user by focusing on user’s position so that area which is closer to user is displayed in larger scale with more details and the area some far around the user with smaller scale with less information content will be displayed. In most cases user needs to have a global view of whole environment and also needs to focus on specific position. So using a zoom window with fixed scale to display the user's position could not be a complete answer to this need. In this paper, we utilize the fisheye projection as a solution improving location-aware map visualization. Results show that fisheye projection allows focus on user location, while maintaining the relationship associated with that part of the map with the surrounding area. Also in contrast to zoom window with fixed scale, fisheye projection with spherical aberration, preserve the integrity of the information. Our practical work shows usefulness using such projection system for displaying map in a navigation system. |
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| Keywords: map visualization, context awareness, fisheye projection, location aware, mobile transportation systems |
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Full-Text [PDF 758 kb]
(1956 Downloads)
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Type of Study: Research |
Subject:
GIS
Received: 2014/06/11
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