哈尔滨工业大学学报（英文版）2008，Vol.15Issue(4)：568-572,5.
A diffusion method based on polar coordinate for ultrasound images denoising
A diffusion method based on polar coordinate for ultrasound images denoising
LU Rong 1SHEN Yi1
作者信息
- 1. Dept. of Control Science and Engineering, Harbin Institute of Technology, Harbin 150001, China
- 折叠
摘要
Abstract
The paper presents a novel anisotropic diffusion approach to the problem of ultrasound images denois-ing based on the polar-coordinate representation. Local gradients based on the polar coordinate are introduced and they are more suitable for ultrasound images than horizontal gradients and vertical gradients commonly used in anisotropic diffusion methods. Moreover, an adaptive adjustment scheme for the threshold parameter in con-duction functions is presented according to the incident angle of the ultrasonic beam with respect to the organ surface. Furthermore, based on the structure matrix, an edge-adaptive diffusion model is introduced, which can selectively preserve the edge from the blurring or smooth noise. Experimental results of real ultrasound images show the validity of the presented approach, which takes the physical imaging mechanism of ultrasonic devices into account.关键词
image denoising/anisotropic diffusion/polar coordinate/ultrasound imageKey words
image denoising/anisotropic diffusion/polar coordinate/ultrasound image分类
信息技术与安全科学引用本文复制引用
LU Rong,SHEN Yi..A diffusion method based on polar coordinate for ultrasound images denoising[J].哈尔滨工业大学学报（英文版）,2008,15(4):568-572,5.
