Ultrasound speckle reduction by directional median filtering

Richard N. Czerwinski, Douglas L. Jones, William D. O'Brien

Research output: Contribution to conferencePaperpeer-review


This paper presents a novel adaptation of the median filter to the problem of boundary-preserving speckle reduction in ultrasonic imaging. The technique involves applying a bank of oriented one-dimensional median filters to the image, and retaining at each point the largest value among all the filter bank outputs. The result is an operator which suppresses speckle noise while retaining the structure of the image, particularly the thin bright streaks, which tend to occur along boundaries between tissue layers. The technique is compared to a block median filter and an algorithm discussed by Loupas et al., and is shown to be far superior to the median filter, and noticeably better than the Loupas filter at enhancing thin lines.

Original languageEnglish (US)
Number of pages4
StatePublished - 1996
EventProceedings of the 1995 IEEE International Conference on Image Processing. Part 3 (of 3) - Washington, DC, USA
Duration: Oct 23 1995Oct 26 1995


OtherProceedings of the 1995 IEEE International Conference on Image Processing. Part 3 (of 3)
CityWashington, DC, USA

ASJC Scopus subject areas

  • Hardware and Architecture
  • Computer Vision and Pattern Recognition
  • Electrical and Electronic Engineering


Dive into the research topics of 'Ultrasound speckle reduction by directional median filtering'. Together they form a unique fingerprint.

Cite this