منابع مشابه
Unwrapping phases by relaxed mean field inference
Some types of medical and topographic imaging device produce images in which the pixel values are “phase-wrapped”, i.e., measured modulus a known scalar. Phase unwrapping can be viewed as the problem of inferring the number of shifts between each and every pair of neighboring pixels, subject to an a priori preference for smooth surfaces, and subject to a zero curl constraint, which requires tha...
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We present a path independent (global) algorithm for phase unwrapping based on the minimisation of a robust cost function. The algorithm incorporates an outlier rejection mechanism making it robust to large inconsistencies and discontinuities. The proposal consists on an iterative incremental scheme that unwraps a sub–estimation of the residual phase at each iteration. The sub–estimation degree...
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Phase unwrapping in L-dimensional topologies is an important problem that has several applications in radar and satellite imaging. Sum product algorithm (belief propagation) gives excellent results for the phase unwrapping problem. In this work, we present a gradient smoothing technique that uses higher order surface models to produce very smooth surfaces and report an improvement in the soluti...
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Phase unwrapping is the reconstruction of the originaltrue phase of a wave from its modulo 2p values. It origi-nates in a variety of applications, such as synthetic aper-ture radar, magnetic resonance imaging, and adaptiveoptics. In this article, the problem of two-dimensionalphase unwrapping is defined and the challenges are ad-dressed. A variety of established approach...
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ژورنال
عنوان ژورنال: The Neuroscientist
سال: 2011
ISSN: 1073-8584,1089-4098
DOI: 10.1177/1073858410392382