Es erkennt hier eine sprudelnde Quelle. Wir auch. - ULV Leoben ...
Es erkennt hier eine sprudelnde Quelle. Wir auch. - ULV Leoben ...
Es erkennt hier eine sprudelnde Quelle. Wir auch. - ULV Leoben ...
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Profile Measurement via Splines<br />
The profiles of cold rolled steel tubing must be measured and compared to a<br />
CAD model. The measurement data is modelled by sequentially tangent circles<br />
and lines.<br />
Data points on the profile are obtained from five<br />
radially mounted light sectioning heads. The profile<br />
is modelled by a spline consisting of mutually<br />
tangent circles and lines. The spline is fit by orthogonal<br />
distance least squares using a constrained<br />
Levenberg-Marquardt optimization algorithm.<br />
The linearized optimization problem is to find:<br />
Subject to the constraints:<br />
The covariance of the parameters is estimated by<br />
computing the Jacobian of the parameters with<br />
respect to the data points using the implicit function<br />
theorem:<br />
Matthew Harker<br />
Lehrstuhl für Automation<br />
an der MUL seit: 2003<br />
Email: matthew.harker@unileoben.ac.at<br />
automation.unileoben.ac.at<br />
Zur Person:<br />
Mechanical Engineering, Specialization in Automation (McGill<br />
University, Canada, 2003, MUL, 2008)<br />
The estimated parameters (radii, widths, angles)<br />
can be compared directly with the CAD model. The<br />
accuracy of the measured dimensions is estimated<br />
by means of first order covariance propagation.<br />
Forschungspartner:<br />
Forschungsschwerpunkte:<br />
Mathematical methods for metric vision<br />
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