摘要
对超声内窥镜增强的方法进行了研究,利用邻域膨胀技术实现了自适应邻域直方图均衡,一定程度内避免了局部直方图均衡时对滑动窗口内所有象素点都进行统计的盲目性。尤其对局部窗口内的噪声点和局部窗口切割造成的不完整细节的象素点避免了统计,减少了增强后图像中的噪声,并将处理结果与全局直方图均衡、局域直方图均衡的结果进行比较分析。自适应邻域直方图均衡对细节的增强较好且对细节的保护也较好。
The development history and present state of ultrasonic imaging are summarized first, and the development history and character of image processing of endosonography are presented chiefly. In order to improve quality of medical ultrasound endoscopic image,the authors employ the adaptive histogram equalization to enhance the details. To enhance the detail of local issue, it is better to use ANHE method.
出处
《山东科技大学学报（自然科学版）》
CAS
2004年第3期120-123,共4页
Journal of Shandong University of Science and Technology(Natural Science)
关键词
图像增强
超声内窥镜图像
灰度直方图均衡
image enhancing
ultrasound endoscopic image
grey-level histogram equalization
