摘要
X射线相干散射成像分析中,能量的分布为一系列同心圆环。准确地确定圆心是精确提取能量谱线的关键。本文采用K均值聚类结合形态学滤波确定内环区域,使用形心法近似确定圆心,对圆心使用标准差内相关运算逼近标准圆心。实验结果证明,该算法实用、有效。
The energy distribution of X-ray coherent scatter images is a series of concentric rings.It is the key step to determine the center of rings accurately.In this paper,the inside region of image was detected by K-mean and mathematical morphology methods.The center was determined with the centroid algorithm.Then the center was recalculated with the standard error inner correlation algorithm to approach the theory circle center.The experiment result shows that the inner correlation algorithm is effective and practical.
出处
《中国医疗设备》
2010年第7期1-4,共4页
China Medical Devices
基金
国家自然科学基金(60372062)
关键词
X线
相干散射
能量分布
K均值聚类
形态学
内相关
X-ray
coherent scatter
energy distribution
K-Mean cluster
mathematical morphology
inner correlation
