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MAHDAL, V., KUREČKA, R.
Original Title
Multiscale Thresholding Method With Quincunx Transform For Ultrasound Speckle Suppression
Type
conference paper
Language
English
Original Abstract
This contribution presents a speckle suppression method for medical ultrasound images. It consists of four steps. In the first step an original image is pre-processed with an adaptive median filter. This is the first part of the image, the second part is obtained by subtracting the first part from the original image. In the second step these two parts are transformed into a wavelet domain by a nonseparable wavelet transform using quincunx lattice. These two sets of coefficients are then processed by a soft thresholding method. In the last step the thresholded parts are transformed back into a space domain and finally they are added together. Speckle noise is reduced while sharp details are almost fully preserved.
Key words in English
ultrasound, wavelet, speckle
Authors
RIV year
2002
Released
1. 1. 2002
Publisher
Brno University of Technology
Location
Brno
ISBN
80-214-2120-7
Book
Analysis of biomedical signals and images
Pages from
359
Pages to
360
Pages count
2
BibTex
@inproceedings{BUT4816, author="Vladimír {Mahdal} and Radomír {Kurečka}", title="Multiscale Thresholding Method With Quincunx Transform For Ultrasound Speckle Suppression", booktitle="Analysis of biomedical signals and images", year="2002", pages="2", publisher="Brno University of Technology", address="Brno", isbn="80-214-2120-7" }