Results 271 to 280 of about 34,849,215 (311)

Level Sets on Disks

The American Mathematical Monthly, 2014
We prove that every continuous function from a disk to the real line has a level set containing a connected component of diameter at least .
null Aleksander Maliszewski, null Marcin Szyszkowski   +1 more
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Separating disconnected quadratic level sets by other quadratic level sets

Journal of Global Optimization, 2023
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Huu-Quang Nguyen, Ya-Chi Chu, Ruey-Lin Sheu   +2 more
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Level set splitting in DEM for modeling breakage mechanics

, 2020
Brittle breakage of particles in granular materials has often been modeled using the discrete element method (DEM). DEM is often limited however in its ability to capture particle shape, particularly when used for breakage.
John M. Harmon, D. Arthur, J. Andrade
semanticscholar   +1 more source

Distance Regularized Level Set Evolution and Its Application to Image Segmentation

IEEE Transactions on Image Processing, 2010
Level set methods have been widely used in image processing and computer vision. In conventional level set formulations, the level set function typically develops irregularities during its evolution, which may cause numerical errors and eventually ...
Chunming Li, Chenyang Xu, C. Gui, M. Fox
semanticscholar   +1 more source

Geometric Texturing Using Level Sets

IEEE Transactions on Visualization and Computer Graphics, 2008
We present techniques for warping and blending (or subtracting) geometric textures onto surfaces represented by high resolution level sets. The geometric texture itself can be represented either explicitly as a polygonal mesh or implicitly as a level set.
Brodersen, Anders, Museth, Ken, Porumbescu, Serban, Budge, Brian   +3 more
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Level set evolution without re-initialization: a new variational formulation

Computer Vision and Pattern Recognition, 2005
In this paper, we present a new variational formulation for geometric active contours that forces the level set function to be close to a signed distance function, and therefore completely eliminates the need of the costly re-initialization procedure ...
Chunming Li, Chenyang Xu, C. Gui, M. Fox
semanticscholar   +1 more source

Minimax optimal level set estimation

SPIE Proceedings, 2005
This paper describes a new methodology and associated theoretical analysis for rapid and accurate extraction of level sets of a multivariate function from noisy data. The identification of the boundaries of such sets is an important theoretical problem with applications for digital elevation maps, medical imaging, and pattern recognition.
R M, Willett, R D, Nowak
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Levels Sets Infimal Convolution and Level Addition

Journal of Optimization Theory and Applications, 1997
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Luc, D. T., Volle, M.
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Integration of Spectral Histogram and Level Set for Coastline Detection in SAR Images

IEEE Transactions on Aerospace and Electronic Systems, 2019
This study proposed a novel algorithm for coastline detection in single-polarization synthetic aperture radar (SAR) images based on the local spectral histogram (LSH) and the level set method (LSM). The proposed algorithm includes two main steps.
Mohammad Modava, G. Akbarizadeh, M. Soroosh   +2 more
semanticscholar   +1 more source

LEVEL FUZZY SETS

Journal of Cybernetics, 1977
Abstract In practical applications of fuzzy set theory, e.g., in pattern recognition, information retrieval, etc., the reader is not advised-for the reasons of the amount of the considered object universal set and the capacity of computer memory involved-to consider fuzzy sets defined in the whole universal set, when it is sufficient-from the point of ...
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