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| 一种新型自适应中值滤波器在超声医学图像中的应用 | |
| 引用本文： | 王章伟,汪天富,刘奇,王景熙,ZHENG Yi,郑昌琼.一种新型自适应中值滤波器在超声医学图像中的应用[J].四川大学学报(工程科学版),2000,32(5):92-95. |
| 作者姓名： | 王章伟 汪天富 刘奇 王景熙 ZHENG Yi 郑昌琼 |
| 作者单位： | 1. 四川大学生物医学工程中心，成都610065 2. 四川大学计算机学院，成都610065 3. Dept．of Electrical Eng．，Minnesota State Univ．，St．Cloud，MN 56301，USA |
| 基金项目： | 国家自然科学基金资助项目(69631020) |
| 摘 要： | 在中值滤波器的框架下，专门针对超声医学图像，提出了一种新的自适应中值滤波器，其自适应机制的是在一个子窗口的四个主要方向先分别进行中值滤波，再用原始图像与四个图像的差值产生加权系数，之后进一步用四个图像加权合成新图像。这种滤波方法有较好的细节保护特性和较强的滤噪特性。分析了新滤波器的特性，并给出了质量较好的超声心脏滤波图像。 |
| 关 键 词： | 超声医学图像 自适应 中值滤波器 |
| 文章编号： | 1009-3087(2000)05-0092-04 |
| 修稿时间： | 1999年4月29日 |
Application of a New Self-adaptive Median Filter in Medical Ultrasonic Images Processing |
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| WANG Zhang-wei,ZHENG Chang-qiong,WANG Tian-fu,LIU Qi,ZHENG Yi,ZHENG Yi.Application of a New Self-adaptive Median Filter in Medical Ultrasonic Images Processing[J].Journal of Sichuan University (Engineering Science Edition),2000,32(5):92-95. | |
| Authors: | WANG Zhang-wei ZHENG Chang-qiong WANG Tian-fu LIU Qi ZHENG Yi ZHENG Yi |
| Abstract: | A new self adaptive median filter based on the median filter for medical ultrasonic images has been developed in the present paper. The filtered image is a weighted combination of four subimages obtained from median filtering the original image along four major directions. The weighting factors are obtained by using the differences between these subimages and the original image. This method possesses better characteristics of detail preservation and stronger noise reduction for images. The property of the new filter has been analyzed and the ultrasonic heart filter image having good quality has been obtained in the present paper. |
| Keywords: | median filter ultrasonic medical image self adaptive |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |