Edge Preserving Speckle Reduction of Ultrasound Image with Morphological Adaptive Median Filtering

  • Ryu, Kwang-Ryol (Department of Electronic Engineering, Mokwon University) ;
  • Jung, Eun-Suk (Department of Electronic Engineering, Mokwon University)
  • Published : 2009.12.31

Abstract

Speckle noise reduction for ultrasound CT image using morphological adaptive median filtering based on edge preservation is presented in this paper. Speckle noise is multiplicative feature and causes ultrasound image to degrade widely from transducer. An input image is classified into edge region and homogeneous region in preprocessing. The speckle is reduced by morphological operation on the 2D gray scale by using convolution and correlation, and edges are preserved. The adaptive median is processed to reduce an impulse noise to preserve edges. As the result, MAM of the proposed method enhances the image to about 10% in comparison with Winner filter by Edge Preservation Index and PSNR, and 10% to only adaptive median filtering.

Keywords

References

  1. A. Macovski, Medical Imaging Systems, Prentice Hall. 1983
  2. T. R. Nelson and T .T. Elvins, "Visualization of 3D Ultrasound Data", IEEE, Computer Graphics and Applications, vol. 13, pp. 50-57,Nov.1993 https://doi.org/10.1109/38.252557
  3. A. Renster and A. B. Downey, "3D-ultrasound Imaging: A Review:, IEEE Engineering in Medicine and Biology Magazine, vol15, pp.41-51, Nov-Dec. 1996 https://doi.org/10.1109/51.544511
  4. Z. H. Cho, J, P. Jones and M. Singh, Foundation of Medical Image, John Wiley & Sons, 1994
  5. B. Burckhardt. "Speckle in Ultrasound B-mode Scans", IEEE Trans. on Sonics and Ultrasonics. vol. 1, pp.1-6, Jan. 1978
  6. A. Thakur, R. S. Anand, "Speckle reduction in Ultrasound Medical Image using Adaptive Filter based on Second Order Statistics", Journal of Medical Engineering & Technology, vol.31, no.4, 263-279, July/August 2007 https://doi.org/10.1080/03091900600718402
  7. J.S. Lee. "A Simple Speckle Smoothing Algorithm for Synthetic Aperture Radar Images, IEEE Trans. on system, man, and, cybernetics, vol. 1, pp.85-89, Feb.1983
  8. T. Loupas, "An Adaptive Weighted Median Filter for Speckle Suppression in Median Ultrasonic Image", IEEE Trans. Circuits Syst. vol. 36, no. 1, Jan, 1989 https://doi.org/10.1109/31.16577
  9. S. Gupa and et al, "A Versatile Technique for Visual Enhancement of Medical Ultrasound Images", Digital Signal Processing, ELSEVIER, pp. 542-560, 2007 https://doi.org/10.1016/j.dsp.2006.12.001