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Comparison of different approaches to suppress speckles in ultrasonic tomograms

  • J. Jan
  • B. Gabrhel
  • J. Haluzíková
  • P. Kilián
  • R. KubákJr
  • I. Provazník
Biomedical Applications
Part of the Lecture Notes in Computer Science book series (LNCS, volume 719)

Abstract

Three methods were applied to ultrasonic tomograms: modified Wiener filtering, adaptive median filtering and averaging of images with speckles diversified by lateral shift of the scanhead. Of these, Wiener filtering seems to have the potential to enhance specular targets while partly suppressing the speckles without changing the overall image appearance strongly. The adaptive median is capable of suppressing the speckles in the greatest extent without smearing the edges but the final appearance of the images is rather unusual. The averaging gives interesting results as it does not distort the image (it is even capable of additional sharpening of structures smeared by insufficient lateral resolution) but the implementation of this approach is rather impractical.

Keywords

Gall Bladder Distorted Image Wiener Filter Speckle Noise Adaptive Median 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© Springer-Verlag Berlin Heidelberg 1993

Authors and Affiliations

  • J. Jan
    • 1
  • B. Gabrhel
    • 1
  • J. Haluzíková
    • 1
  • P. Kilián
    • 1
  • R. KubákJr
    • 1
  • I. Provazník
    • 1
  1. 1.Institute of Biomedical Engineering, Faculty of Electrical Eng.State Technical University BrnoBrno CZCzech Republic

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