Publication detail

BLIND ITERATIVE DECONVOLUTION OF ULTRASONIC IMAGES

Radovan Jiřík, Torfinn Taxt

Original Title

BLIND ITERATIVE DECONVOLUTION OF ULTRASONIC IMAGES

Type

conference paper

Language

English

Original Abstract

A new two-dimensional method for ultrasonic imaging is presented. It increases the spacial resolution of ultrasonic images by postprocessing the raw radiofrequency signal. The approach is based on maximum-likelihood blind deconvolution. The restored true image and the degrading process characteristics are estimated simultaneously based on a-priori constraints. The approach extends the two-dimensional homomorphic deconvolution concept by using it only for initial estimation. This avoids the limitations of homomorphic deconvolution, namely the need for two-dimensional phase unwrapping and the assumption that the true image and the degradation characteristics are represented by different separate bands in the cepstrum domain. The algorithm was tested on data acquired from a tissue-mimicking phantom and on clinical data. The observed and measured spacial resolution of the resulting images was substantially increased.

Keywords

Ultrasonic imaging, blind deconvolution, homomorphic deconvolution, image processing

Authors

Radovan Jiřík, Torfinn Taxt

RIV year

2005

Released

1. 1. 2005

Publisher

IFMBE

Location

Praha

ISBN

1727-1983

Periodical

IFMBE Proceedings

Year of study

3

State

Kingdom of Sweden

Pages count

5

BibTex

@inproceedings{BUT15154,
  author="Radovan {Jiřík}",
  title="BLIND ITERATIVE DECONVOLUTION OF ULTRASONIC IMAGES",
  booktitle="EMBEC 2005 Conference Proceedings",
  year="2005",
  journal="IFMBE Proceedings",
  volume="3",
  pages="5",
  publisher="IFMBE",
  address="Praha",
  issn="1727-1983"
}