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.
Results
Showing 1 to 15 of 15 for “"Mellin transform"”.
-
Fast Registration of Tabular Document Images Using the Fourier-Mellin Transform
Image registration, the process of finding the transformation that best maps one image to another, is an important tool in document image processing. Having properly-aligned microfilm images can help in manual and automated content extraction, zoning, and batch compression of images. An image …
-
Investigation of ship target recognition using neural networks in conjunction with the Fourier Mellin transform
… in conjunction with the Fourier Modified Direct Mellin Transform (FMDMT) for the recognition of ship targets. The FMDMT is a modification of the Direct Mellin Transform for digital implementations, and is applied to the magnitudes of the Discrete Fourier Transforms (DFT) of range profiles of …
-
Shift and scale invariant preprocessor.
… advantage of invariant properties of a Fourier transform followed by a Mellin transform. The preprocessor is realized using an FFT and a Mellin transform with a conventional error correction term. The error term proves to be indeterminate, but the error's bound is identified as the envelope for …
-
On the Thermal Stresses Due to a Uniform Heat Flow Past a Circular Hole With a Radial Edge Crack
… with a radial edge crack. By superimposing a Mellin transform solution of the equations of thermoelasticity on a Michell series solution the author reduces the problem to a pair of singular integral equations which are then solved numerically. The stress intensity factors and crack formation …
-
Operators on singular manifolds
… develop new structures of operators based on the Mellin transform and tools for iterating the calculus for higher singularities. We refer to the idea of interpreting boundary value problems (BVPs) in terms of pseudo-differential operators with a principal symbolic hierarchy, taking into account …
-
The radon split of radially acting linear integral operators on H2 with uniformly bounded double norms
… These properties are consequences of the inverse Mellin-Transform, which transformation originates in Fourier-Plancherel Theorem for [Special characters omitted.] and [Special characters omitted.] . Because of this Mellin-Transform representation of [Special characters omitted.] and [Special …
-
Sparse signal representation based algorithms with application to ultrasonic array imaging
… parameter of the Weibull distribution using Mellin transform.
-
Spectral properties of Kähler quotients
… case is described by an interesting integral transform which we will call the twisted Mellin transform. We will study both analytic and combinatorial aspects of this transform in the beginning of this thesis.
-
Ship target recognition
… in the form of the Fourier-Modified Discrete Mellin Transform is used as a means of extracting feature vectors which are insensitive to the aspect angle of the radar. Classification tests are based on both simulated and real data. Classification accuracies of up to 93 are reported. The second …
-
A new approach to the problem of modes in mestel disks
… below these thresholds cannot possess a bounded Mellin transform. Unfortunately, I still cannot prove the existence of such modes.
-
Analytical Methods For Levy Processes With Applications To Finance
… Beta random variables. We also identify the Mellin transform of the exponential functional, and then, under the assumption that the log-stock price follows a meromorphic process, we use this to develop a fast and accurate algorithm for pricing continuously monitored, fixed strike Asian call …
-
Field Theoretic Models of Deep Inelastic Lepton-Nucleon Scattering
… behavior of the ladder diagrams is obtained by Mellin transform techniques. Our results are: 1. The structure functions do not scale (i.e. become non-trivial functions of ω) in our neutral vector meson ladder model and our pseusoscalar meson model because of the appearance of factors of …
-
Profiles of PATRICIA Tries
Digital trees are data structures that represent sets of strings according to their shared prefix structure.
-
A Study on Unintentional and Intentional Sources of Variability in Nanometer Scale Digital Circuits
… algorithms are based on the Fourier and the Mellin transform to efficiently compute the total error accumulated at the output of an approximate circuit abstracted as a directed acyclic graph, through its topological traversal. The resulting error distribution is obtained much faster than …
-
On Different Parametrizations of Feynman Integrals
<p>In this doctoral thesis, we discuss and apply advanced techniques for the calculations of scattering amplitudes which, on the one hand, allow us to compute cross sections and differential distributions at high precision and, on the other hand, give us deep mathematical insights on the …