Combined Energy Minimization for Image Reconstruction from Few Views

Combined Energy Minimization for Image Reconstruction from Few Views
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从少量视图进行图像重建的组合能量最小化

DOI:
10.1155/2012/154630
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发表时间:
2012-10
影响因子:
--
通讯作者:
Shen, Pei-Yi
Shen, Pei-Yi
中科院分区:
工程技术4区
文献类型:
--
作者:
Wei, Wei;Yang, Xiao-Lin;Zhou, Bin;Feng, Jun;Shen, Pei-Yi

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少视图重建是医学影像学和应用数学中的一个重要问题。本文提出了一种组合能量最小化的图像重建方法。在低密度区域引入图像梯度的能量,加快了重建速度,改善了重建效果。在高密度区域引入图像的总变差,能较好地保持图像特征。引入非线性共轭梯度法求解该问题。我们的方法的效率和精度在几个数值实验中显示。
Reconstruction from few views is an important problem in medical imaging and applied mathematics. In this paper, a combined energy minimization is proposed for image reconstruction. energy of the image gradient is introduced in the lower density region, and it can accelerate the reconstruction speed and improve the results. Total variation of the image is introduced in the higher density region, and the image features can be preserved well. Nonlinear conjugate gradient method is introduced to solve the problem. The efficiency and accuracy of our method are shown in several numerical experiments.
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