Detail publikace

BLIND ITERATIVE DECONVOLUTION OF ULTRASONIC IMAGES

Radovan Jiřík, Torfinn Taxt

Originální název

BLIND ITERATIVE DECONVOLUTION OF ULTRASONIC IMAGES

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

Ultrasonic imaging, blind deconvolution, homomorphic deconvolution, image processing

Autoři

Radovan Jiřík, Torfinn Taxt

Rok RIV

2005

Vydáno

1. 1. 2005

Nakladatel

IFMBE

Místo

Praha

ISSN

1727-1983

Periodikum

IFMBE Proceedings

Ročník

3

Stát

Švédské království

Strany počet

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"
}