Extraction and Description of 3D (Articulated) Moving Objects
نویسندگان
چکیده
We seek to extract the three-dimensional motion of articulated objects by passive sensing. We first developed a multi-view system that segments objects from the background before their subsequent analysis by a motion model. To reduce the effects of noise, we also performed 3D reconstruction prior to motion analysis to improve the extraction of the (static) background. The 3D extraction and motion analysis are both performed by evidence gathering, thus accruing optimality of performance. These new analyses are supported by a new representation which describes 3D data with optimal fidelity.
منابع مشابه
Model Based Extraction of Articulated Objects in Image Sequencesfor Gait
This paper describes an approach to the extraction of articulated objects which will be used for gait analysis. In most medical applications markers are used to determine trajectories of diierent body parts. This approach works without any markers. Monotony operators which compute the displacement vector eld are used to initialize a contour based tracking algorithm | called active rays | for se...
متن کاملGait Extraction and Description by Evidence-Gathering
Using gait as a biometric is of increasing interest, yet there are few model-based, parametric, approaches to extract and describe moving articulated objects. One new approach can detect moving parametric objects by evidence gathering, hence accruing known performance advantages in terms of performance and occlusion. Here we show how that the new technique can be extended not only to extract a ...
متن کاملArticulated Tree Structure from Motion — A Matrix Factorisation Approach
We present a matrix factorisation approach for 3D reconstruction of articulated objects from monocular images. Previous factorisation methods can solve for multiple independently moving objects, but fail in the articulated case because of a rank deficiency in the input matrix. By extending the shape and motion matrices used in the case of independent objects, we derive a reconstruction algorith...
متن کاملUsing Articulated Scene Models for Dynamic 3D Scene Analysis in Vista Spaces
In this paper we describe an efficient but detailed new approach to analyze complex dynamic scenes directly in 3D. The arising information is important for mobile robots to solve tasks in the area of household robotics. In our work a mobile robot builds an articulated scene model by observing the environment in the visual field or rather in the so-called vista space. The articulated scene model...
متن کاملExtraction of Moving Articulated-Objects by Evidence Gathering
We present a new evidence gathering based approach, aimed to extract moving articulated objects from a temporal sequence of images. The new technique is designed to enable the automated determination of parameters pertaining to human gait, with a view to possible use as a biometric for recognition purposes. The articulated line feature extraction technique, uses a genetic algorithm (GA) based i...
متن کامل