PlaceMap: Automatic Indoor Map Construction Using User Movements (14159N)
This technology falls in the following categories of Singapore's IDA Infocomm Technology Roadmap 2012:
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While location is one of the most important elements in context information in mobile and ubiquitous computing, large-scale deployments of indoor localisation system remain a problem without a satisfactory solution.
This invention is an indoor localisation system that utilises opportunistically sensed data contributed by users. The system does not require manual calibration, prior knowledge and infrastructure support.
The key novelty of this system lies in its ability to merge user generated walking segments annotated with displacement information with signal strength information to build a map of walking paths annotated with radio signal strength. As the system enables minimum user effort to calibrate and maintain, it has potential for large scale deployment.
Technology Readiness Level 5 on the scale by the Ministry of Defence Singapore.
About the Research Group
Prof. Chan Mun Choon works in the Department of Computer Science at NUS. His research interests are in the areas of wireless sensor network, delay-tolerant network, energy-efficient protocols and mobile computing.