| GVF各向异性扩散和冲击滤波耦合的图像放大 |
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| 引用本文： | 惠卫华.GVF各向异性扩散和冲击滤波耦合的图像放大[J].喀什师范学院学报,2011,32(3):54-57. |
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| 作者姓名： | 惠卫华 |
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| 作者单位： | 喀什师范学院物理系,新疆喀什,844008 |
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| 摘 要： | 提出了一种基于梯度向量流（Gradient Vector Flow,GVF）各向异性扩散和冲击滤波耦合的图像放大算法.该算法模型由边缘停止函数约束的平均曲率流在各向异性的扩散中平滑图像,能去除噪声等的干扰;GVF外力场将图像梯度边缘力场转变为有旋场进而去除图像放大中锯齿效应;数据保真项避免图像因扩散而过度失真,保留图像特征;耦合冲击滤波模型增强图像边缘和细节.实验结果表明,该算法在客观指标和主观效果上均是一种有效的图像放大算法.
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| 关 键 词： | 图像放大 梯度向量流 各向异性扩散 冲击滤波 |
Image Magnification by Coupling of GVF-based Anisotropic Diffusion and Shock Filter |
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| HUI Wei-hua.Image Magnification by Coupling of GVF-based Anisotropic Diffusion and Shock Filter[J].Journal of Kashgar Teachers College,2011,32(3):54-57. |
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| Authors: | HUI Wei-hua |
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| Institution: | HUI Wei-hua (Department of Physics,Kashgar Teachers College,Kashgar 844008,Xinjiang,China) |
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| Abstract: | An image magnification method by coupling of GVF-based anisotropic difusion and shock filter model is proposed in this paper.In the zoomed image,mean curvature flow(MCF) with edge-stopping function constraints diffuse image and eliminates noise;GVF external face field can transform image gradient field to rotational field and help to remove the jagged effects;Fidelity term forces image to stop diffusing more and keep characteristic;Shock filter enhances edges and details.Experiments demonstrate that the pro... |
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| Keywords: | Image Magnification Gradient Vector Flow(GVF) Anisotropic Diffusion Shock Filter |
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