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.
In this paper, we introduce a new multiple view geometry(MVG) which describes an absolutely dynamic environment with a dynamic scene and multiple moving cameras. The trajectories of cameras are modeled by Degree-N Bezier curve. The new MVG unifies some previous MVG into a single representation. It can describe the traditional MVG in a static environment, MVG in space-time, as well as the MVG in N-Dimention...
We propose a method for segmenting an arbitrary number of moving objects using the geometry of 6 points in 2D images to infer motion consistency. This geometry allows us to determine whether or not observations of 6 points over several frames are consistent with a rigid 3D motion. The matching between observations of the 6 points and an estimated model of their configuration in 3D space is quantified...
Identifying correspondences between trajectory segments observed from nonsynchronized cameras is important for reconstruction of the complete trajectory of moving targets in a large scene. Such a reconstruction can be obtained from motion data by comparing the trajectory segments and estimating both the spatial and temporal alignments. Exhaustive testing of all possible correspondences of trajectories...
In this paper we consider the problem of recovering the 3-dimensional Euclidian structure of a rigid object from multi-frame point correspondence data in a sequence of 2-D images obtained under perspective projection. The main idea is to recast the problem as the identification of an LTI system based on partial data. The main result of the paper shows that, under mild conditions, the lowest order...
In the past few years, lots of works were achieved on Simultaneous Localization and Mapping (SLAM). It is now possible to follow in real time the trajectory of a moving camera in an unknown environment. However, current SLAM methods are still prone to drift errors, which prevent their use in large-scale applications. In this paper, we propose a solution to reduce those errors a posteriori. Our solution...
Estimation of 3-D egomotion from video input, also known as visual odometry, is an important issue for many applications today. Augmented reality (AR) and robotic systems for example rely heavily on correct pose and motion estimation. In this paper we discuss egomotion estimation from a single camera. We focus on the estimation of the essential matrix and problems which arise from degenerate configurations...
The paper describes a general platform for live video analysis. The first stage of the platform is to build a topological scene description by learning the location of nodes (i.e. zones), which are called points of interest. There are two kinds of points of interest, the entry-exit zones (areas where moving object appear and disappear in the scene) and the stopping zones (areas where the moving objects...
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.