Patent ID: 8731827
Filing Date: 2014-05-20
Classification: G01C

Abstract:
1. A method for estimating a path of a user entering an indoor space of a building from an outside thereof, the method comprising: estimating outer appearance information of the building and defining an entrance to the building; estimating an external boundary of the building based on the defined entrance to the building; after estimating the external boundary of the building, obtaining movement information of the user using at least one of a plurality of sensors including a gyro sensor, an acceleration sensor, a terrestrial magnetic sensor and an altitude sensor, estimating a first estimated path corresponding to a movement path of the user within the indoor space based on the obtained movement information; and upon detection of a moving direction change of the user moving along the first estimated path by an angle equal to or more than a set threshold value, estimating a second estimated path based on a change point at which the direction change is made.