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  • Title: [A medical ultrasonic image filtering method based on morphological reconstruction].
    Author: Zhang J, Lin J, Li D, Wang T.
    Journal: Sheng Wu Yi Xue Gong Cheng Xue Za Zhi; 2007 Jun; 24(3):481-4. PubMed ID: 17713243.
    Abstract:
    Speckle is the main reason which declines the quality of medical ultrasonic images. In this paper, the initial condition for the Downhill filter, a morphological reconstruction algorithm, is modified and applied in the speckle reduction. Firstly, the initial area and start position as the mark image was determined in the marker image. Then the modified Downhill filter was used in the ultrasonic marker image. The results showed that, in comparison with the other three filters, this modified Downhill filter, while maintaining the integrity of the contour,could reduce the speckle in the regions of cavity efficiently and rapidly.
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