Planar deformable motion estimation incorporating mass conservation and image gradient constancy
Planar deformable motion estimation incorporating mass conservation and image gradient constancy
复制标题
结合质量守恒和图像梯度恒定的平面可变形运动估计
DOI：
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发表时间：
2011
期刊：
影响因子：
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通讯作者：
A. Amini
中科院分区：
文献类型：
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作者：
M. Negahdar;A. Amini
通过优化目标函数，光流估计算法的精度一直在稳步提高。提出了一种由X射线CT图像计算二维光流的新能量函数。光流框架的一个优点是可以对数值解施加物理约束。这里包含的物理约束包括：亮度恒定、梯度恒定、基于质量守恒的连续性方程和保持间断的时空光滑性。对该方法的定性和定量评估表明，该方法的角度误差明显优于以前的光流技术，用于估计可变形的肺运动。未来的研究将包括将拟议的技术扩展到3-D。
The accuracy of optical flow estimation algorithms has been improving steadily by refining the objective function which should be optimized. A novel energy function for computing 2-D optical flow from X-ray CT images is presented. One advantage of the optical flow framework is the possibility to enforce physical constraints on the numerical solutions. The physical constraints which have been included here are: brightness constancy, gradient constancy, continuity equation based on mass conservation, and discontinuity-preserving spatio-temporal smoothness. Both qualitative and quantitative evaluation of the proposed method demonstrates that the method results in significantly better angular errors than previous optical flow techniques for estimation of deformable lung motion. Future research will include extension of the proposed techniques to 3-D.
影响因子：
3.8
作者：
Yin, Youbing;Hoffman, Eric A.;Lin, Ching-Long
通讯作者：
Lin, Ching-Long
登记。
DOI：
10.1007/978-1-4939-7647-8_1
发表时间：
2018
期刊：
Neuromethods
影响因子：
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作者：
Joshi,AnandA
通讯作者：
Joshi,AnandA