Abstract:

Along with the technical progress of the wireless mobile internet, location-based services（LBS）have been developing more rapidly, and the popularity of the smartphone also bring more convenient to access to LBS services for mobile customers. But the mobile position solutions, especially indoor positioning, are still difficult and have become the technical bottleneck. To address the problem of indoor positioning, this paper presents an approach of active indoor positioning that use image feature recognition and motion detection to complete the accurate positioning of the indoor environment based on smartphones built-in sensors only, with the technology advantages of low cost, practicable and flexible frame.

Key words: location-based service, smartphone, positioning technology, image feature detecting and matching, gait detecting