Active Structure From Motion: Application to Point, Sphere, and Cylinder

In this paper, we illustrate the application of a nonlinear active structure estimation from motion (SfM) strategy to three problems, namely 3-D structure estimation for 1) a point, 2) a sphere, and 3) a cylinder. In all three cases, an appropriate parameterization reduces the problem to the estimat...

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Bibliographic Details
Published in:IEEE transactions on robotics 2014-12, Vol.30 (6), p.1499-1513
Main Authors: Spica, Riccardo, Giordano, Paolo Robuffo, Chaumette, Francois
Format: Article
Language:English
Subjects:
Computer Science
Convergence
Cylinders
Equivalence
Error analysis
Estimation error
Image processing
Mathematical models
Measurement errors
Motion control
Nonlinear estimation
Parameter estimation
Parametrization
Robotics
Strategy
structure from motion
Tasks
Three dimensional
Transient response
Visual servoing
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Summary:In this paper, we illustrate the application of a nonlinear active structure estimation from motion (SfM) strategy to three problems, namely 3-D structure estimation for 1) a point, 2) a sphere, and 3) a cylinder. In all three cases, an appropriate parameterization reduces the problem to the estimation of a single quantity. Knowledge of this estimated quantity and of the available measurements allows for then retrieving the full 3-D structure of the observed objects. Furthermore, in the point feature case, two different parameterizations based on either a planar or a spherical projection model are critically compared. Indeed, the two models yield, somehow unexpectedly, to different convergence properties for the SfM estimation task. The reported simulative and experimental results fully support the theoretical analysis and clearly show the benefits of the proposed active estimation strategy, which is in particular able to impose a desired transient response to the estimation error equivalent to that of a reference linear second-order system with assigned poles.
ISSN:1552-3098
1941-0468
DOI:10.1109/TRO.2014.2365652