Share Email Print
cover

Journal of Electronic Imaging • new

Multicamera fusion for shape estimation and visibility analysis of unknown deforming objects
Author(s): Evgeny Nuger; Beno Benhabib
Format Member Price Non-Member Price
PDF $20.00 $25.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

A method is proposed for fused three-dimensional (3-D) shape estimation and visibility analysis of an unknown, markerless, deforming object through a multicamera vision system. Complete shape estimation is defined herein as the process of 3-D reconstruction of a model through fusion of stereo triangulation data and a visual hull. The differing accuracies of both methods rely on the number and placement of the cameras. Stereo triangulation yields a high-density, high-accuracy reconstruction of a surface patch from a small surface area, while a visual hull yields a complete, low-detail volumetric approximation of the object. The resultant complete 3-D model is, then, temporally projected based on the tracked object’s deformation, yielding a robust deformed shape prediction. Visibility and uncertainty analyses, on the projected model, estimate the expected accuracy of reconstruction at the next sampling instant. In contrast to common techniques that rely on <italic<a priori</italic< known models and identities of static objects, our method is distinct in its direct application to unknown, markerless, deforming objects, where the object model and identity are unknown to the system. Extensive simulations and comparisons, some of which are presented herein, thoroughly demonstrate the proposed method and its benefits over individual reconstruction techniques.

Paper Details

Date Published: 9 June 2016
PDF: 22 pages
J. Electron. Imaging. 25(4) 041009 doi: 10.1117/1.JEI.25.4.041009
Published in: Journal of Electronic Imaging Volume 25, Issue 4
Show Author Affiliations
Evgeny Nuger, Univ. of Toronto (Canada)
Beno Benhabib, Univ. of Toronto (Canada)


© SPIE. Terms of Use
Back to Top