The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Wifi fingerprinting is an appealing method for indoor positioning as it can utilizes available wireless infrastructures while retaining an acceptable level of accuracy. For the method to work, radio map of target environment has to be constructed in advance. The process is laborious and time consuming as signal strength has to be collected from mobile devices at a large number of reference locations...
In this paper, we describe the positioning technique for camera based smartphone in an indoor environment. The camera of smartphone detects multiple light-emitting diode (LED) lights whose are located on the rooftop. LED light sends its coordinates (x, y) information to the camera whose are fixed and parallel to the world coordinate. We calculate the distance from each LED to the camera using photogrammetry...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.