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Article history: Accepted 11 March 2016 Available online 9 April 2016 Three dimensional (3D)mapping of environments has gained tremendous attention, from academic to industry to military, owing to the ever increasing needs of environmental modeling as well as monitoring. While many highly effective techniques have been reported thus far, a few even turned into commercial products, none has explored the use of wearable sensors to capture human foot motion, gait, and phase for 3D map construction, especially in the Architecture, Engineering, and Construction (AEC) domain. In this work, we propose a smart (andwearable) shoe, called “Smart Shoe”, which integratesmultiple laser scanners and an inertial measurement unit (IMU) to build a 3D map of environments in real time. Such a Smart Shoe can be a potential tool for floor plan surveying, construction process monitoring, planning renovations, space usage planning, managing building maintenance and other tasks in the AEC domain. Besides, this Smart Shoe could assist disabled people (blind people) to navigate and avoid obstacles in the unknown environment. In another case, the shoes may help firefighters quickly model and recognize objects in the firing, dark, and smoky buildings where traditional camera-based approaches might not be applicable. We integrate this shoe with a novel foot localization algorithm that produces a smooth and accurate pose and trajectory of human walking, which is the key enabling technique to minimize data registration errors from laser point cloud. © 2016 Elsevier B.V. All rights reserved.

Development of a Smart Shoe for Building a Real-Time 3D Map