JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2009, Vol. 39 ›› Issue (5): 38-42.

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A medical ultrasound image filtering method based on the anisotropic diffusion equation

  

  • Received:2008-12-30 Online:2009-10-16 Published:2009-10-16

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Abstract:

Speckle noise is one of the inherent noise patterns evoked by the mechanism of ultrasound imaging, which  brings great difficulties to feature extraction, recognition and analysis. Techniques based on the anisotropic diffusion equation can effectively suppress the speckle noise. An algorithm using the anisotropic diffusion equation was proposed to suppress the speckle noise of a medical ultrasound image. This method improves LinShi operator and enhances the conventional method by setting the threshold value and including diagonal edges. The simulation results showed that this  method is superior to the classical PM equation and LinShi operator at image smoothing and edge preserving, and denoising for real ultrasound image indicates that  this  method has high potential for clinical applications.

Key words: medical ultrasound image; speckle noise; anisotropic diffusion

CLC Number: 

  • TP391
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