摘要
针对比率边缘检测算子提出了一种自动确定阈值的方法,该方法引入最佳熵的理论到SAR边缘检测中,把基于比率的边缘检测均值比率影像分割成边缘和非边缘两类。此方法执行起来简单、快速,无需人工干预,能避免人为因素的影响。
A method is proposed to automatically determine the threshold according to the image feature based on ratio edge detector instead of predefining it as before. The principle of optimal entropy into the edge detection of SAR image is introduced, which classifies the intermediate result image of ratio-based edge detector into two classes： edge and non-edge. The presented method performs simply and fast, needless of manual intervention, which can avoid the influence of human factors.
出处
《武汉大学学报（信息科学版）》
EI
CSCD
北大核心
2007年第6期494-497,共4页
Geomatics and Information Science of Wuhan University
基金
国家自然科学基金资助项目(60602013)
国家973计划资助项目(2006CB701300)
关键词
SAR影像
边缘检测
自动阈值
均值比率
最佳熵
SAR imagery
edge detection
automatic determining threshold
ratio of avera ges
optimal entropy
