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TMI
2002
118views more  TMI 2002»
13 years 5 months ago
Phase-Based Multidimensional Volume Registration
Abstract-- We present a method for accurate image registration and motion compensation in multidimensional signals, such as 2D X-ray images and 3D CT/MRI volumes. The method is bas...
Magnus Hemmendorff, Mats T. Andersson, Torbjö...
AFPAC
2000
Springer
257views Mathematics» more  AFPAC 2000»
13 years 10 months ago
The Multidimensional Isotropic Generalization of Quadrature Filters in Geometric Algebra
In signal processing, the approach of the analytic signal is a capable and often used method. For signals of finite length, quadrature filters yield a bandpass filtered approxim...
Michael Felsberg, Gerald Sommer
BILDMED
2008
176views Algorithms» more  BILDMED 2008»
13 years 7 months ago
Edge-Preserving Denoising for Segmentation in CT-images
In the clinical environment the segmentation of organs is an increasingly important application and used, for example, to restrict the perfusion analysis to a certain organ. In ord...
Eva Eibenberger, Anja Borsdorf, Andreas Wimmer, Jo...
DCC
2010
IEEE
14 years 24 days ago
Subsampling-Adaptive Directional Wavelet Transform for Image Coding
In lifting-based directional wavelet transforms, different subsampling patterns may show significant difference for directional signals in image coding. This paper investigates t...
Jizheng Xu, Feng Wu
JEI
2010
141views more  JEI 2010»
13 years 22 days ago
Contrast image correction method
A method for contrast enhancement is proposed. The algorithm is based on a local and image-dependent exponential correction. The technique aims to correct images that simultaneousl...
Raimondo Schettini, Francesca Gasparini, Silvia Co...