منابع مشابه
Complex Articulated Object Tracking
In this paper new results are presented for tracking complex multi-body objects. The theoretical framework is based on robotics techniques and uses an a-priori model of the object including a general mechanical link description. A new kinematic-set formulation takes into account that articulated degrees of freedom are directly observable from the camera and therefore their estimation does not n...
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In this paper, we improve the Partitioned Sampling (PS) scheme to better handle high-dimensional state spaces. PS can be explained in terms of conditional independences between random variables of states and observations. These can be modeled by Dynamic Bayesian Networks. We propose to exploit these networks to determine conditionally independent subspaces of the state space. This allows us to ...
متن کاملSegmentation-Free, Area-Based Articulated Object Tracking
We propose a novel, model-based approach for articulated object detection and pose estimation that does not need any low-level feature extraction or foreground segmentation and thus eliminates this error-prone step. Our approach works directly on the input color image and is based on a new kind of divergence of the color distribution between an object hypothesis and its background. Consequently...
متن کاملArticulated Object Tracking via a Genetic Algorithm
Within a human motion analysis system, body parts are modeled by simple virtual 3D rigid objects. Its position and orientation parameters at frame t+1 are estimated based on the parameters at frame t and the image intensity variation from frame t to t + 1, under kinematic constraints. A genetic algorithm calculates the 3D parameters that make a goal function that measures the intensity change m...
متن کاملSingularity Analysis for Articulated Object Tracking
We analyze the use of kinematic constraints for articulated object tracking. Conditions for the occurrence of singularities in 3-D models are presented and their effects on tracking are characterized. We describe a novel 2-D Scaled Prismatic Model (SPM) for figure registration. In contrast to 3-D kinematic models, the SPM has fewer singularity problems and does not require detailed knowledge of...
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ژورنال
عنوان ژورنال: ELCVIA Electronic Letters on Computer Vision and Image Analysis
سال: 2005
ISSN: 1577-5097
DOI: 10.5565/rev/elcvia.103