نتایج جستجو برای: boundary map

تعداد نتایج: 349178  

Journal: :Conformal Geometry and Dynamics of the American Mathematical Society 2013

Journal: :Topology and its Applications 2006

2013
Jose Anand

Medical images are noisy images and its processing is a complex one. The boundary detection of aortas in cardiovascular Magnetic Resonance (MR) images is difficult. This paper presents a vector image and edge map based boundary detection of aortas in cardiovascular MR images and is implemented using MATLAB. The performance of the edge vector and edge map boundary detection method for detecting ...

2012
M. I. Isaev

We study the impedance boundary map (or Robin-to-Robin map) for the Schrödinger equation in open bounded demain at fixed energy in multidimensions. At least, in dimension d ≥ 3, we give global stability estimates for determining potential from these boundary data and, as corollary, from the Cauchy data set. Our results include also, in particular, an extension of the Alessandrini identity to th...

Determining the sediment delivery rate and watershed delineation is among the first stage in environmental research, especially in water erosion estimation. The determining the accurate boundary of watershed is important for the hydrological and morphologic characteristics of watersheds. The study aims to present an automatic extraction model of watershed delineation and calculate sediment deli...

Journal: :Transactions of the American Mathematical Society 1956

Journal: :Transactions of the American Mathematical Society 2012

Journal: :Rocky Mountain Journal of Mathematics 1998

2013
RUSSELL LODGE

For any Thurston map with exactly four postcritical points, we present an algorithm to compute the Weil-Petersson boundary values of the corresponding Thurston pullback map. This procedure is carried out for the Thurston map f(z) = 3z 2 2z3+1 originally studied by Buff, et al. The dynamics of this boundary map are investigated and used to solve the analogue of Hubbard’s Twisted Rabbit problem f...

2011
Michael A. Bekos Michael Kaufmann Dimitrios Papadopoulos Antonios Symvonis

The traditional map labeling problems are mostly NP-hard. Hence, effective heuristics and approximations have been developed in the past. Recently, efficient algorithms for the so-called boundary labeling model have been introduced which assumes that the labels are placed on the boundary of the map and connected by polygonal leaders to their corresponding sites. Internal labels have been forbid...

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