摘要
分析了X线影像图像的成像机理及其特点,介绍了分数布朗运动模型在X线图像边缘提取中的应用,特别提出了对X线颅颌影像定位片进行边缘提取的新方法,并应用此方法对X线颅颌影像侧位片进行处理,得到了完整连续的头影侧位片不同组织的轮廓线。与现有的X线颅颌影像分析中边缘提取的结果相比,其软硬组织的边缘更加清晰、准确,最大限度地保留了不同组织的边缘信息,为进一步进行准确计算机自动定点奠定了基础。
The principle and the property of X-ray image are introduced. Fractional Brownain motion is applied to extract the edges of X-ray cephalogram（ lateral）. A complete edge of soft-tissue and hard-tissue in the X-ray cephalogram is obtained. The result shows that the method intreduced is better than any other methods to extract the edges of tissues in the cephalogram. The edge is more precise and more clear. This valuable result can be used to recognize landmarks automatically and precisely.
出处
《控制工程》
CSCD
2005年第5期476-479,共4页
Control Engineering of China
基金
黑龙江省自然科学基金资助项目(2004F0303)
黑龙江省教育厅资助项目(10541173)
黑龙江大学重点实验室项目(HDXH0505)
