degree-driven geometric algorithm design

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Degree-driven Geometric Algorithm Design David L. Millman University Of North Carolina - Chapel Hill ITCS’12 9 January 2012

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Degree-driven Geometric Algorithm Design. David L. Millman University Of North Carolina - Chapel Hill. ITCS’12 9 January 2012. An Example Problem. Given n sites on a pixel grid, what is the closest site to each pixel? How much precision is needed to determine this?. - PowerPoint PPT Presentation

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Page 1: Degree-driven Geometric  Algorithm Design

Degree-driven Geometric Algorithm Design

David L. Millman

University Of North Carolina - Chapel Hill

ITCS’129 January 2012

Page 2: Degree-driven Geometric  Algorithm Design

An Example ProblemAn Example Problem

Given n sites on a pixel grid, what is the closest site to each pixel?

How much precision is needed to determine this?

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Page 3: Degree-driven Geometric  Algorithm Design

Why Precision [Y97]Why Precision [Y97]

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Page 4: Degree-driven Geometric  Algorithm Design

Analyzing Precision [LPT99]

e.g. Precision of the Orientation test:

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Page 5: Degree-driven Geometric  Algorithm Design

Analyzing Precision [LPT99]

e.g. Precision of the Orientation test:

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Page 6: Degree-driven Geometric  Algorithm Design

Analyzing Precision [LPT99]

e.g. Precision of the Orientation test:

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Page 7: Degree-driven Geometric  Algorithm Design

Analyzing Precision [LPT99]

e.g. Precision of the Orientation test:

Page 8: Degree-driven Geometric  Algorithm Design

Analyzing Precision [LPT99]

e.g. Precision of the Orientation test:

Degree 2

Page 9: Degree-driven Geometric  Algorithm Design

Some Results of My ThesisSome Results of My Thesis

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Page 10: Degree-driven Geometric  Algorithm Design

Other ProjectsOther Projects

Parallel computational geometryVicente H.F. Batista, David L. Millman, Sylvain Pion, and Johannes Singler. Parallel geometric algorithms for

multi-core computers. Computational Geometry, 43(8):663 – 677, 2010.

Monte Carlo algos for the neutron transport equationDavid L. Millman, David P. Griesheimer, Brian Nease and Jack Snoeyink. Robust volume calculation for

constructive solid geometry (CSG) components in Monte Carlo Transport Calculations. Under Review

David P. Griesheimer, David L. Millman, and Clarence R. Willis. Analysis of distances between inclusions in finite

binary stochastic materials. Journal of Quantitative Spectroscopy and Radiative Transfer in Journal of Quantitative

Spectroscopy and Radiative Transfer, 112(4):577–598, March 2011.

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Page 11: Degree-driven Geometric  Algorithm Design

Contact InformationContact Information

David L. Millman

[email protected]

http://cs.unc.edu/~dave

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