Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 169 for “"Random field"”.
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Smoothness- transferred random field
We propose a new random field (RF) model, smoothness-transfer random field (ST-RF) model, for image modeling. In the objective function of RF models, smoothness energy is defined with compatibility function to capture the relationship between neighboring local regions, while data energy for the …
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Markov random field image modelling
… of parametric model for the distribution. Markov random fields (MRFs) provide just such a vehicle for modelling the a priori distribution of labels found in images. In particular, this work investigated the suitability of MRF models for modelling a priori information about the distribution of …
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Estimation in random field models for noisy spatial data
"The random field model has been applied to model spatial heterogeneity for spatial data in many applications. The purpose of this dissertation is to explore statistical properties of noisy spatial data through estimation of the Gaussian random field. Large sample properties of the Maximum …
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Some applications of random field theory in geotechnical engineering
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil Engineering, 1980.
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Random field modeling for interpretation and analysis of layered data
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1987.
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COMBINING MARKOV RANDOM FIELD AND MARKED POINT PROCESS FOR MICROSCOPY IMAGE MODELING
In many microscopy image analysis applications, it is of critical importance to address
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Multi-level, multi-variate, non-stationary, random field modeling of engineering systems
… multi-level, multi-variate, non-stationary, random field formulations for the modeling of system properties. To consider the inhomogeneous spatial variability, this study proposes a regressor-based random field formulation using an improved latent space approach (ILSA). To considers the …
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An efficient multivariate multidimensional random field generator using the fast Fourier transform
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 1994.
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Markov random field modeling of the spatial distribution of proteins on cell membranes
… observed simultaneously. As a solution, Markov random field (MRF) modeling is proposed to reconstruct the distribution of multiple cell membrane constituents from pair-wise data sets. MRFs are a powerful mathematical formalism for modeling correlations between states associated with neighboring …
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Statistically isotropic random field models for mechanics of random solid and fluid media
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-08-01
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Probabilistic analysis of slope stability using random field theory and the finite element method
Includes bibliographical references (pages 85-90).
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Learning coupled conditional random field for image decomposition : theory and application in object categorization
… In the mid-level, a novel coupled Conditional Random Field model is proposed to model and decompose the contour and texture processes in natural images. Various matching schemes are introduced to match the decomposed contour and texture channels in a dissociative manner. As a counterpart to the …
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Scaling studies of frustrated systems, random-field tricriticality, electronic conduction models, and interface delocalization
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Physics, 1999.
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A population Monte Carlo approach to estimating parametric bidirectional reflectance distribution functions through Markov random field parameter estimation
… object surface. The method uses a novel Markov Random Field (MRF) formulation on triplets of corner vertex nodes to model the probability of sets of reflectance parameters for arbitrary reflectance models, given probabilistic surface geometry, camera, illumination, and reflectance image …
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Study of the three dimensional random field Ising model : magnetic X-ray and neutron scattering, magnetization, and heat capacity
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Physics, 1996.
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Transport of Kinetically Adsorbing Contaminants in Randomly Heterogeneous Aquifers
… hydraulic conductivity by means of a stationary random field. Therefore, the solute concentration distribution at a given time also becomes a random field. For the case of an inert solute, Dagan found a solution for the temporal evolution of the ensemble spatial moments of the concentration …
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Rational modeling and linear prediction of random fields
… is proposed that is based upon modeling a random field as the output of a rational linear system driven by the innovations of the field. A variety of linear prediction problems, each depending upon the definition of past, may be formulated for random fields; consequently, there are an equal …
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SPDE-derived random fields in structural optimisation and elastodynamics
Random imperfections are an inherent aspect of engineered systems, originating from various sources such as manufacturing variations, material heterogeneity, and environmental factors. These imperfections inevitably introduce uncertainties in the performance of structures which are rarely …
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New algorithms for image analysis, compression, and 2-D spectrum estimation in the radon space
… with the Radon transform of a stationary random field are brought out. A new representation for the Radon transform of a stationary random field (valid upto second-order statistics), is used to study the second-order properties of the transform. Limitations pertaining to the theory and its …
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