改进边界指示函数的水平集活动轮廓模型

郑伟; 张晶; 杨虎

doi:10.7510/jgjs.issn.1001-3806.2016.01.028

改进边界指示函数的水平集活动轮廓模型

1.
河北大学电子信息工程学院, 保定 071002;
2.
河北大学河北省数字医疗工程重点实验室, 保定 071002;
3.
中国人民解放军 66165部队, 保定 071000

作者简介: 郑伟(1972-),女,教授,博士,现主要从事图像处理、图像安全通信的研究。E-mail:147685650@qq.com.

基金项目:
河北大学医工交叉研究中心开放基金资助项目(BM201103)
中图分类号: TN911.73

Level set active contour model improving boundary indicator function

1.
College of Electronic and Information Engineering, Hebei University, Baoding 071002, China;
2.
Key Laboratory of Hebei on Digital Medical Engineering, Hebei University, Baoding 071002, China;
3.
3
CLC number: TN911.73

摘要: 由于受成像原理的限制,导致超声图像对比度低、边界模糊,因此基于边界的水平集分割效果很不理想。为了提高超声图像的分割精度和分割效率,提出了一种梯度信息与区域信息相结合的水平集分割算法。首先对基于边界的距离正则化水平集演化(DRLSE)模型进行改进,将区域信息引入到边界指示函数中,并用改进后的边界指示函数代替DRLSE模型中的边界指示函数,最后,得到一个梯度与区域信息相结合的水平集演化模型。结果表明,本文中的模型能准确分割甲状腺肿瘤超声图像,且在分割效率和分割精确度方面均比DRLSE模型有所提高。
- 图像处理 /
- 图像分割 /
- 距离正则化水平集演化模型 /
- 边界指示函数 /
- 梯度信息 /
- 区域信息
Abstract: Because of the restriction of imaging principle, ultrasound images led toare always with low contrast and weak boundaries, segmentation effect of level set based on edge was not ideal. In order to improve segmentation precision and efficiency of ultrasound images, new a novel level set segmentation algorithm was proposed combining gradient information with regional information was proposed. Firstly, distance regularized level set evolution (DRLSE) model based on boundary was improved, regional information was put into boundary indicator function. And then, the improved boundary indicator function was used instead of DRLSE model's. Finally, a level set evolution model combining gradient information with regional information was obtained. The experimental results show that the model can accurately segment ultrasound images of thyroid tumor and the segmentation efficiency and precision are higher than DRLSE model.
- image processing /
- image segmentation /
- distance regularized level set evolution model /
- boundary indicator function /
- gradient information /
- region information

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改进边界指示函数的水平集活动轮廓模型

作者简介: 郑伟(1972-),女,教授,博士,现主要从事图像处理、图像安全通信的研究。E-mail:147685650@qq.com.

Level set active contour model improving boundary indicator function

计量

改进边界指示函数的水平集活动轮廓模型

作者简介: 郑伟(1972-),女,教授,博士,现主要从事图像处理、图像安全通信的研究。E-mail:147685650@qq.com

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Level set active contour model improving boundary indicator function

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改进边界指示函数的水平集活动轮廓模型

作者简介: 郑伟(1972-),女,教授,博士,现主要从事图像处理、图像安全通信的研究。E-mail:147685650@qq.com.

Level set active contour model improving boundary indicator function

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改进边界指示函数的水平集活动轮廓模型

作者简介: 郑伟(1972-),女,教授,博士,现主要从事图像处理、图像安全通信的研究。E-mail:147685650@qq.com

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Level set active contour model improving boundary indicator function

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