نتایج جستجو برای: image tracking

تعداد نتایج: 479035  

1997
Frédéric Jurie

In this paper, we propose an e cient method for tracking 3D modelled objects in cluttered scenes. Rather than tracking objects in the image, our approach relies on the object recognition aspect of tracking. Candidate matches between image and model features de ne volumes in the space of transformations. The volumes of the pose space satisfying the maximum number of correspondences are those tha...

2003
Alexander Mojaev Andreas Zell

This paper describes a real-time technique for scale invariant object or face tracking with standard PC hardware. The tracking method is based on a low redundancy (compressed) object image representation. For image decomposition a fast non-iterative transform based on the odd-symmetric gabor functions is used, which guarantees on the one hand a low redundancy of the resulting representation and...

2013
A.SAI SUNEEL

Moving object detection and tracking is often the first step in applications such as video surveillance. The main aim of project moving object detection and tracking system with a static camera has been developed to estimate velocity, distance parameters we propose a general moving object detection and tracking based on vision system using image difference algorithm. This paper focuses on detec...

1998
Prithiraj Tissainayagam David Suter

In this paper we present a feature tracking system with automatic motion determination of features in an image sequence. The positions of features (corners) extracted in the first frame of a sequence are estimated and predicted in the subsequent frames by using an extension of Bayesian multiple hypothesis technique (MHT [2]) based on different motion models. The tracking of features is based on...

2006
Arasanathan Thayananthan Ramanan Navaratnam Björn Stenger Philip H. S. Torr Roberto Cipolla

This paper presents a learning based approach to tracking articulated human body motion from a single camera. In order to address the problem of pose ambiguity, a one-to-many mapping from image features to state space is learned using a set of relevance vector machines, extended to handle multivariate outputs. The image features are Hausdorff matching scores obtained by matching different shape...

2006
Raquel R. Pinho João Manuel R. S. Tavares Miguel V. Correia

In this paper we address the problem of tracking features efficiently and robustly along image sequences. To estimate the undergoing movement we use an approach based on Kalman filtering. The measured data is incorporated by optimizing the global correspondence set based on an efficient approximation of the Mahalanobis Distance (MD). Along the image sequence, to deal with the incoming and previ...

2009
RAQUEL R. PINHO

Tracking features along image sequences is a Computer Vision problem which has evolved considerably in the last years. In fact, improvements have been made to try overcome difficult and ambiguous situations generated by cluttered backgrounds, occlusions, large geometric deformations, illumination variation or noisy data [1, 2]. On the other hand, with better computational and imaging resources,...

2011
F. Rameau D. D. Sidibé C. Demonceaux D. Fofi

An effective technique for applying visual tracking algorithms to omnidirectional image sequences is presented. The method is based on a spherical image representation which allows taking into account the distortions and nonlinear resolution of omnidirectional images. Experimental results show that both deterministic and probabilistic tracking methods can effectively be adapted in order to robu...

1998
Nicola J. Ferrier

Success of visual tracking typically relies on the ability to process visual information su ciently fast. Often a dynamic systemmodel of target motion is used to estimate the target location within the image and a region of interest (ROI) is used to reduce the amount of image data processing. This has proven e ective, provided the ROI is su ciently large to detect the target and su ciently smal...

2002
Włodzimierz Kasprzak

Computer vision applications for traffic scene analysis and autonomous navigation (driver support) require highly sophisticated sensors and computation methods – they constitute a real challenge for image analysis systems. Common to both applications is the moving object detection/tracking task. In this paper we study this task on four different data abstraction levels: image segmentation, 2-D ...

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