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- Uwe Helmke, Knut Hüper, John B. Moore
- IEEE Trans. Robotics and Automation
- 2002

There is a robotic balancing task, namely real-time dextrous-hand grasping, for which linearly constrained, positive definite programming gives a quite satisfactory solution from an engineering point… (More)

- Martin Kleinsteuber, Knut Hüper
- 2007 IEEE International Conference on Acoustics…
- 2007

In this paper, a conjugate gradient method on the complex Grabmann manifold is proposed that computes the k-principal components of a Hermitian (n × n)-matrix. The algorithm is at most of order… (More)

- Uwe Helmke, Knut Hüper, Pei Yean Lee, John B. Moore
- International Journal of Computer Vision
- 2006

A novel approach for essential matrix estimation is presented, this being a key task in stereo vision processing. We estimate the essential matrix from point correspondences between a stereo image… (More)

- Martin Haardt, Knut Hüper, John B. Moore, Josef A. Nossek
- 1996 8th European Signal Processing Conference…
- 1996

This paper presents a new Jacobi-type method to calculate a simultaneous Schur decomposition (SSD) of several real-valued, non-symmetric matrices by minimizing an appropriate cost function. Thereby,… (More)

This paper is concerned with computation of the Karcher mean on the unit sphere S and the special orthogonal group SO(n). The Karcher mean, or the Riemannian centre of mass, is defined as the point… (More)

We formulate a variational problem on a Riemannian manifold M whose solutions are piecewise smooth geodesics that best fit a given data set of time labelled points in M . By a limiting process, these… (More)

- Uwe Helmke, Knut Hüper, John B. Moore, Thomas Schulte-Herbrüggen
- J. Global Optimization
- 2002

In this paper gradient flows on unitary matrices are studied that maximize the real part of the C-numerical range of an arbitrary complex n × n-matrix A. The geometry of the C-numerical range can be… (More)

- Yueshi Shen, Knut Hüper, Fatima Silva Leite
- Proceedings 2006 IEEE International Conference on…
- 2006

This paper investigates a novel procedure to calculate smooth interpolation curves of the rotation group SO3, which is commonly considered as the standard representation of rigid-body's orientations.… (More)

- Michel Sarkis, Klaus Diepold, Knut Hüper
- 2007 IEEE International Conference on Acoustics…
- 2007

Extracting the motion parameters of a moving camera is an important issue in computer vision. This is due to the need of numerous emerging applications like telepresence and robot navigation. The key… (More)

- Martin Kleinsteuber, Uwe Helmke, Knut Hüper
- SIAM J. Matrix Analysis Applications
- 2004

A generalization of the cyclic Jacobi algorithm is proposed that works in an arbitrary compact Lie algebra. This allows, in particular, a unified treatment of Jacobi algorithms on different classes… (More)