文件列表:

Synth.tif (3738, 2002-09-12)
approx_likel_ratio.m (3371, 2004-11-10)
approx_likel_ratio_roi.m (3205, 2004-05-07)
approx_prior_ratio.m (3565, 2004-11-10)
approx_prior_ratio_roi.m (3400, 2004-05-07)
genlik_US.m (8881, 2004-11-09)
genlik_US_roi.m (10597, 2004-11-09)
HomWienerSpatial.m (3363, 2004-05-07)
imload.m (712, 2001-04-19)
normalize.m (167, 1999-09-04)
rem_noise_adapt.m (1889, 2004-12-07)
rem_noise_adapt_roi.m (1891, 2004-05-07)
SimulateSpeckle.m (1001, 2001-10-29)
SimulateSpeckleFun.m (500, 2003-09-23)
Thr_univ.m (371, 2004-05-06)
VisualClip.m (805, 2001-08-29)
WienerSpatial.m (3289, 2004-05-06)
Synth.mat (45184, 2001-10-29)
adapt_energy.dll (61440, 2004-12-15)
init_mask.dll (49152, 2004-11-09)
iwt3det_spline.dll (47616, 1999-10-29)
Mag_sector_row.dll (40960, 2001-01-15)
NeighbEn_sector.dll (61440, 2004-12-15)
wt3det_spline.dll (46592, 1999-10-29)
adapt_energy.c (5443, 2004-12-15)
init_mask.c (2683, 2004-11-09)
iwt3det_spline.c (5640, 2001-04-09)
Mag_sector_row.c (2637, 2004-05-06)
NeighbEn_sector.c (3364, 2004-12-15)
wt3det_spline.c (5166, 2001-04-09)
adapt_energy.mexw32 (7680, 2009-08-28)
init_mask.mexw32 (6656, 2009-08-28)
iwt3det_spline.mexw32 (8704, 2009-08-28)
Mag_sector_row.mexw32 (6656, 2009-08-28)
NeighbEn_sector.mexw32 (7168, 2009-08-28)
wt3det_spline.mexw32 (8192, 2009-08-28)

This package contains Matlab and C-code for denoisinig ultrasound images using the method of [1]. [1] A. Pizurica, W. Philips, I. Lemahieu and M. Acheroy, "A Versatile Wavelet Domain Noise Filtration Technique for Medical Imaging," IEEE, Trans. on Medical Imaging, vol. 22, no. 3, pp. 323--331, March 2003. ****************** There are TWO MAIN PROGRAMS TO BE CALLED FROM MATLAB: 1) genlik_US.m - basic version 2) genlik_US_roi.m - allows the parameter estimation from a specified region of interest (roi) from the image. This is important for the processing of real ultrasound images where the actual ultrasound data often form only a piramydal-shaped central part of the image and the rest of the image are computer generated data. Both of these programs allow: - denoising arbitrary input images and - generation of test images with artificial spatially correlated speckle In cases where the reference noise-free image is provided the program calculates the input and the resulting signal to noise ratio's For comparison, a user-interactive homomorphic adaptive Wiener filter is included in this package: HomWienerSpatial.m ****************** Mex-files (c-files) are compiled for use under Microsoft operating system. Copyright notice: Author: Aleksandra Pizurica/TELIN/Ghent University E-mail: Aleksandra.Pizurica@telin.UGent.be Copyright: All software, documentation, and related files in this distribution are Copyright (c) 2004 Aleksandra Pizurica. All rights reserved. This denoising package uses wavelet decomposition and reconstruction functions developed by Rice University, Houston, Texas and its contributors. This software is distributed and licensed to you on a non-exclusive basis, free-of-charge. Redistribution and use in source and binary forms, with or without modification, are permitted provided that the above copyright notice is clearly maintained. ****************** Please direct any suggestions to the author: Aleksandra Pizurica Ghent University Department Telecommunications and Information Processing Sint-Pietersnieuwstraat 41, B-9000 Gent, Belgium Tel: 32-9-2***.34.15 Fax: 32-9-2***.42.95 E-mail: sanja@telin.ugent.be Web: http://telin.ugent.be/~sanja/ Last modified 7. May 2004.

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