Dept. of Electr. & Electron. Eng., Bilkent Univ., Ankara.
IEEE Trans Med Imaging. 1995;14(2):283-92. doi: 10.1109/42.387710.
An adaptive smoothing technique for speckle suppression in medical B-scan ultrasonic imaging is presented. The technique is based on filtering with appropriately shaped and sized local kernels. For each image pixel, a filtering kernel, which fits to the local homogeneous region containing the processed pixel, is obtained through a local statistics based region growing technique. The performance of the proposed filter has been tested on the phantom and tissue images. The results show that the filter effectively reduces the speckle while preserving the resolvable details. The simulation results are presented in a comparative way with two existing speckle suppression methods.
提出了一种用于医学 B 型超声成像中散斑抑制的自适应平滑技术。该技术基于具有适当形状和大小的局部核滤波。对于每个图像像素，通过基于局部统计的区域生长技术获得一个与包含处理像素的局部均匀区域匹配的滤波核。在所提出的滤波器的性能已在幻影和组织图像上进行了测试。结果表明，该滤波器在保留可分辨细节的同时有效地减少了散斑。模拟结果以与两种现有的散斑抑制方法进行比较的方式呈现。
