title: [A medical ultrasonic image filtering method based on morphological reconstruction].
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.
authors: Department of Biomedical Engineering of Sichuan University, Chengdu 610065, China.
authors: Jianwei
authors: J
authors: Zhang
authors: Jiangli
authors: J
authors: Lin
authors: Deyu
authors: D
authors: Li
authors: Tianfu
authors: T
authors: Wang
mesh_terms: D000465:Algorithms; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D007091:Image Processing, Computer-Assisted; D014463:Ultrasonography / Q000379:methods*