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In this paper we propose a new approach for tracking multiple objects in image sequences. The proposed approach differs from existing ones in important aspects of the representation of the location and the shape of tracked objects and of the uncertainty associated with them. The location and the speed of each object is modeled as a discrete time, linear dynamical system which is tracked using Kalman...
This paper presents a novel and powerful Bayesian framework for 3D tracking of multiple arbitrarily shaped objects, allowing the probabilistic combination of the cues captured from several calibrated cameras directly into the 3D world without assuming ground plane movement. This framework is based on a new interpretation of the Particle Filter, in which each particle represent the situation of a particular...
Hypothesis generation and verification technique has recently attracted much attention in the research on multiple object category detection and localization in images. However, the performance of this strategy greatly depends on the accuracy of generated hypotheses. This paper proposes a method of multiple category object detection adopting the hypothesis generation and verification strategy that...
We present an object detection technique that uses local edgels and their geometry to locate multiple objects in a range image in the presence of partial occlusion, background clutter, and depth changes. The fragmented local edgels (key-edgels) are efficiently extracted from a 3D edge map by separating them at their corner points. Each key-edgel is described using our scale invariant descriptor that...
This work presents a novel object tracking approach, where the motion model is learned from sets of frame-wise detections with unknown associations. We employ a higher-order Markov model on position space instead of a first-order Markov model on a high-dimensional state-space of object dynamics. Compared to the latter, our approach allows the use of marginal rather than joint distributions, which...
In this paper we analyze numerical optimization procedures in the context of level set based image segmentation. The Chan-Vese functional for image segmentation is a general and popular variational model. Given the corresponding Euler-Lagrange equation to the Chan-Vese functional the region based segmentation is usually done by solving a differential equation as an initial value problem. While most...
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