基于仿射不变的分段可变形模型的图像分割  

IMAGE SEGMENTING USING SEGMENTAL DEFORMABLE MODEL BASED ON AFFINE INVARIANTS

作　　者：冉鑫[1] 戚飞虎[1] 方勇[1] 

机构地区：[1]上海交通大学计算机科学与工程系,上海200030

出　　处：《红外与毫米波学报》2004年第6期446-450,共5页Journal of Infrared and Millimeter Waves

基　　金：国家自然科学基金项目资助(60271033)

摘　　要：提出了一种用于图像分割的分段可变形模型,并在模型的能量函数中引入了仿射不变量信息.将模型轮廊进行层次化的分段变形能够保持标记点移动的相关性,改进的内外部能量函数定义减少了计算量.试验表明与传统方法相比,本模型运算速度快,抗噪声和避免陷入局部极小值的能力较强,对医学图像的分割有较好的效果.A segmental deformable model for image segmentation was presented and affine invariants were introduced into. the model's energy function. The contour of the model is deformed hierachically, which keeps the relationship of control points along the contour. Reformative definitions of internal and external energy can reduce computational complexity. In comparison with the classical deformable model, the experimental results demonstrate that the proposed model, which is more effective and more robust to local minima and noise, can achieve better performance-for medical image segmentation.

关 键 词：图像分割 可变形模型 能量函数 局部极小值 抗噪声 移动 分段 仿射不变量 计算量 变形能 

分 类 号：TN911[电子电信—通信与信息系统] TP391[电子电信—信息与通信工程]