基于GVF和压力Snake模型的哑铃型目标提取  

Extraction of dumbbell shape object based on GVF and balloon improved model

作　　者：张奕雄[1] 李熙莹[2,3] 

机构地区：[1]韩山师范学院物理与电子工程系,广东潮州521041 [2]中山大学工学院,广东广州510275 [3]中山大学光电材料与技术国家重点实验室,广东广州510275

出　　处：《计算机工程与设计》2010年第9期2131-2134,共4页Computer Engineering and Design

基　　金：广东省科技厅工业攻关计划基金项目(2007A010100012)

摘　　要：针对传统活动模型初始化曲线严格的位置选择问题和梯度矢量流场模型存在的哑铃型目标"临界点"问题,提出了梯度矢量流场构造出气球压力的活动轮廓改进模型。利用了梯度矢量流场决定形变点的压力方向,在该构造压力与图像外力及轮廓曲线内力的共同作用下模型完成目标提取。结合实例对改进模型和算法进行了试验分析,结果表明了模型的可行性和算法的有效性。Aimed at the problems of the initial contours in traditional active contour model and so-called critical point problem in the dumbbell shape extraction by gradient vector flow snake （GVF） model, the improve balloon snake model which pressure is constructed by GVF is presented. GVF model is used to construct the pressure direction of balloon snake model. The model with the constructed pressure and external force of image and internal force of the contours is adopted to solve the extraction of dumbbell shape. Experiment demonstrated the feasibility of the improved model and the effectiveness of the algorithm.

关 键 词：梯度矢量流场 活动轮廓模型 气球力模型 临界点 哑铃型 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]