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.
This research was motivated by a need for accurate UAV navigation using camera(s) to augment inertial navigation unit data while flying over, or through an urban environment. The process of position determination using cameras follows a sequence of well defined steps. First features must be found in consecutive-in-time images and then matched across time. The underlying camera motion, as defined by...
Based on binocular vision measurement principle, this paper describes a new method that measures the 3D posture of micro-table, this method can match and track the micro-table and get its three-dimensional position. We use the four corners of the table points as signalized points to describe the position and posture of the micro-table, and track the four corners by the dual-CCD cameras in the three-dimensional...
A new method is developed to extract moving vehicles and subsequently detect their speeds from a pair of QuickBird (QB) panchromatic (PAN) and multi-spectral (MS) images automatically. Since PAN and MS sensors of QB have a slight time lag, about 0.2 seconds, the speed of moving vehicles can be detected by the movement between PAN and MS images in the time lag. From a PAN image with 0.6 m resolution,...
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.