Using bagging to enhance clustering procedures for planar shapes

We study how to employ space-time dynamics in nonlinear media to achieve distributed manipulation of objects — positioning, orienting and transporting objects by wave-fronts and patterns in excitable medium. We present the results of computational experiments of a massive parallel actuator controlled by a cellular-automaton model of an excitable medium. The model incorporates closed-loop actuation where sites of the medium can be excited not only by their closest neighbors but also by the edges of the manipulated object. We analyze motion of basic planar shapes (either initially aligned along axes or randomly oriented) induced by an actuator controlled by excitable lattice with various excitation rules. We demonstrate that space-time excitation dynamics in discrete nonlinear media bears a huge potential in terms of sensible nontrivial manipulation of planar shapes.

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Planar Shapes Descriptors Based on the Turning Angle Scalogram

Lecture Notes in Computer Science - Image Analysis and Recognition ◽

10.1007/978-3-540-69812-8_54 ◽

2008 ◽

pp. 547-556 ◽

Cited By ~ 4

Author(s):

Kidiyo Kpalma ◽

Minqiang Yang ◽

Joseph Ronsin

Keyword(s):

Turning Angle ◽

Planar Shapes

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Dynamic Medial Axes of Planar Shapes

Advances in Computer Graphics - Lecture Notes in Computer Science ◽

10.1007/11784203_40 ◽

2006 ◽

pp. 460-468 ◽

Cited By ~ 1

Author(s):

Kai Tang ◽

Yongjin Liu

Keyword(s):

Planar Shapes

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Crazy Cuts: Dissecting Planar Shapes into Two Identical Parts

Mathematics of Surfaces XIII - Lecture Notes in Computer Science ◽

10.1007/978-3-642-03596-8_5 ◽

2009 ◽

pp. 75-89 ◽

Cited By ~ 1

Author(s):

A. M. Bruckstein ◽

D. Shaked

Keyword(s):

Planar Shapes

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Manufactured Cracks in Pipe Used to Evaluate ILI Measurement Performance

Volume 1: Pipeline and Facilities Integrity ◽

10.1115/ipc2020-9400 ◽

2020 ◽

Author(s):

Jason Skow ◽

Joseph W. Krynicki ◽

Lujian Peng

Keyword(s):

Field Conditions ◽

Valuable Data ◽

Naturally Occurring ◽

Transmission Pipeline ◽

Planar Shapes ◽

Small Cracks

Abstract Recently, transmission pipeline operators have started designing pipe spools with manufactured cracks of very precise size and orientation for the purpose of qualifying measurement technologies. The manufactured cracks are very similar to naturally occurring cracks and can be made to have varied profiles and off-planar shapes (like hook cracks). The manufactured spools are installed on a transmission pipeline at either the pipe launcher, the receiver or in-line such that an in-line inpsection (ILI) tool passes through it during a transmission pipeline ILI field run. This produces highly valuable data to evaluate measurement performance because the crack sizes are precisely known, crack morphologies are similar to realistic cracks and the ILI tool is tested in field conditions. This paper describes the effect on the estimated ILI tool measurement performance for various combinations of manufactured cracks in a pipe spool. The cases described vary the number of manufactured cracks in the spool to estimate the value of each additional crack and vary the distribution of cracks sizes to compare the value of large versus small cracks.

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