ABSTRACT
Activity recognition using wearable sensors has widespread and important applications in different domains including healthcare, safety and behavior monitoring. Almost all the solutions for gesture and activity recognition are data-driven, and so, understanding the data and their characteristics is fundamental toward developing effective solutions. Visualization is perhaps the most effective approach for getting insight into data as well as communicating the insights with others. A novel visualization method that would provide additional utility to the existing methods is of utmost desire. However, such novel methods for visualization are rarely invented, particularly in the area of wearable and mobile sensing. This paper presents novel methods for visualizing movement and orientation using inertial sensors. we demonstrate the use of the methods for visualizing several activities and gestures. We also developed an efficient method for smoking puff detection leveraging the visualization methods.
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