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Papers by Ileana Streinu

Research paper thumbnail of A combinatorial approach to planar non-colliding robot arm motion planning

Research paper thumbnail of Planar minimally rigid graphs and pseudo-triangulations

Research paper thumbnail of Camera Position Reconstruction and Tight Direction Networks

Lecture Notes in Computer Science, 2002

Research paper thumbnail of Edge-unfolding nested polyhedral bands

Computational Geometry, 2008

Research paper thumbnail of The vertex-edge visibility graph of a polygon

Computational Geometry, 1998

Research paper thumbnail of Non-stretchable pseudo-visibility graphs

Computational Geometry, 2005

Research paper thumbnail of Rigidity analysis of protein biological assemblies and periodic crystal structures

Research paper thumbnail of Towards accurate modeling of noncovalent interactions for protein rigidity analysis

Research paper thumbnail of Body-and-cad geometric constraint systems

Proceedings of the …, 2009

Research paper thumbnail of Unfolding polyhedral bands

CCCG, 2004

A band is defined as the intersection of the surface of a con-vex polyhedron with the space betwe... more A band is defined as the intersection of the surface of a con-vex polyhedron with the space between two parallel planes, as long as this space does not contain any vertices of the polyhedron. An unfolding of a given band is obtained by cutting along exactly one edge and placing all ...

Research paper thumbnail of Computational origami for sensor configuration and control

Signals, Systems and …

Abstract-We describe one approach for the development of generation-after-next microsystems that ... more Abstract-We describe one approach for the development of generation-after-next microsystems that have on-the-fly sensing and processing adaptivity. These microsystems function as the lowest level in a multi-tiered network. Ideas for the development of these microsystems borrow ...

Research paper thumbnail of Natural realizations of sparsity matroids

Research paper thumbnail of Graded sparse graphs and matroids

Research paper thumbnail of Combinatorial genericity and minimal rigidity

Research paper thumbnail of Sparsity-certifying graph decompositions

Research paper thumbnail of Locked and unlocked polygonal chains in 3D

Research paper thumbnail of Fast Implementation of Depth Contours Using Topological Sweep

Proceedings of the …, 2001

The concept of location depth was introduced in statistics as a way to extend the univariate no-t... more The concept of location depth was introduced in statistics as a way to extend the univariate no-tion of ranking to a bivariate configuration of data points. It has been used successfully for robust esti-mation, hypothesis testing, and graphical display. These require the ...

Research paper thumbnail of Slider-Pinning Rigidity: a Maxwell-Laman-Type Theorem

Discrete & Computational Geometry, 2010

We define and study slider-pinning rigidity, giving a complete combinatorial characterization. Th... more We define and study slider-pinning rigidity, giving a complete combinatorial characterization. This is done via direction-slider networks, which are a generalization of Whiteley's direction networks.

Research paper thumbnail of Expansive periodic mechanisms

A one-parameter deformation of a periodic bar-and-joint framework is expansive when all distances... more A one-parameter deformation of a periodic bar-and-joint framework is expansive when all distances between joints increase or stay the same. In dimension two, expansive behavior can be fully explained through our theory of periodic pseudo-triangulations. However, higher dimensions present new challenges. In this paper we study a number of periodic frameworks with expansive capabilities in dimension dgeq3d\geq 3dgeq3 and register both similarities and contrasts with the two-dimensional case.

Research paper thumbnail of Outerplanar Graphs and Delaunay Triangulations

Research paper thumbnail of A combinatorial approach to planar non-colliding robot arm motion planning

Research paper thumbnail of Planar minimally rigid graphs and pseudo-triangulations

Research paper thumbnail of Camera Position Reconstruction and Tight Direction Networks

Lecture Notes in Computer Science, 2002

Research paper thumbnail of Edge-unfolding nested polyhedral bands

Computational Geometry, 2008

Research paper thumbnail of The vertex-edge visibility graph of a polygon

Computational Geometry, 1998

Research paper thumbnail of Non-stretchable pseudo-visibility graphs

Computational Geometry, 2005

Research paper thumbnail of Rigidity analysis of protein biological assemblies and periodic crystal structures

Research paper thumbnail of Towards accurate modeling of noncovalent interactions for protein rigidity analysis

Research paper thumbnail of Body-and-cad geometric constraint systems

Proceedings of the …, 2009

Research paper thumbnail of Unfolding polyhedral bands

CCCG, 2004

A band is defined as the intersection of the surface of a con-vex polyhedron with the space betwe... more A band is defined as the intersection of the surface of a con-vex polyhedron with the space between two parallel planes, as long as this space does not contain any vertices of the polyhedron. An unfolding of a given band is obtained by cutting along exactly one edge and placing all ...

Research paper thumbnail of Computational origami for sensor configuration and control

Signals, Systems and …

Abstract-We describe one approach for the development of generation-after-next microsystems that ... more Abstract-We describe one approach for the development of generation-after-next microsystems that have on-the-fly sensing and processing adaptivity. These microsystems function as the lowest level in a multi-tiered network. Ideas for the development of these microsystems borrow ...

Research paper thumbnail of Natural realizations of sparsity matroids

Research paper thumbnail of Graded sparse graphs and matroids

Research paper thumbnail of Combinatorial genericity and minimal rigidity

Research paper thumbnail of Sparsity-certifying graph decompositions

Research paper thumbnail of Locked and unlocked polygonal chains in 3D

Research paper thumbnail of Fast Implementation of Depth Contours Using Topological Sweep

Proceedings of the …, 2001

The concept of location depth was introduced in statistics as a way to extend the univariate no-t... more The concept of location depth was introduced in statistics as a way to extend the univariate no-tion of ranking to a bivariate configuration of data points. It has been used successfully for robust esti-mation, hypothesis testing, and graphical display. These require the ...

Research paper thumbnail of Slider-Pinning Rigidity: a Maxwell-Laman-Type Theorem

Discrete & Computational Geometry, 2010

We define and study slider-pinning rigidity, giving a complete combinatorial characterization. Th... more We define and study slider-pinning rigidity, giving a complete combinatorial characterization. This is done via direction-slider networks, which are a generalization of Whiteley's direction networks.

Research paper thumbnail of Expansive periodic mechanisms

A one-parameter deformation of a periodic bar-and-joint framework is expansive when all distances... more A one-parameter deformation of a periodic bar-and-joint framework is expansive when all distances between joints increase or stay the same. In dimension two, expansive behavior can be fully explained through our theory of periodic pseudo-triangulations. However, higher dimensions present new challenges. In this paper we study a number of periodic frameworks with expansive capabilities in dimension dgeq3d\geq 3dgeq3 and register both similarities and contrasts with the two-dimensional case.

Research paper thumbnail of Outerplanar Graphs and Delaunay Triangulations

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