摘要
眼底图是一种重要的医学图象。在对灰度眼底图象进行处理的过程中,形态学的OPENCLOSE变换被用来去除眼底图象中的高频噪声,TOP-HAT变换被用来进行血管突出。为了与形态学方法进行比较,文中还给出了二维低通滤波及模板匹配法,它们被用来滤除噪声及突出血管。比较结果表明,在处理结果相近的前提下,形态学方法具有思路简单、处理速度快的突出优点。
Fundus image is one of the most important medical images. Grey scale mathematical morphology methods are used to process fundus image. Morphology OPENCLOSE transform is used to erase high frequency noise, and TOP HAT transform is used to enhance blood vessels. In order to be compared with morphological methods, 2D low pass filter and template matching are also used to filter out noise and enhance blood vessels. The comparison shows that for the same processing result, morphological methods are easier and quicker.
出处
《清华大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
1997年第4期76-80,共5页
Journal of Tsinghua University(Science and Technology)
基金
清华大学科研基金
关键词
数学形态学
眼底图
灰色图象
医学图象
图象处理
mathematical morphology
fundus image
grey scale image
erase noise
blood vessel enhancement