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公开(公告)号:US20120123250A1
公开(公告)日:2012-05-17
申请号:US13297373
申请日:2011-11-16
申请人: Yu Pang , Yefeng Zheng , Matthias John , Jan Boese , Dorin Comaniciu
发明人: Yu Pang , Yefeng Zheng , Matthias John , Jan Boese , Dorin Comaniciu
IPC分类号: A61B6/00
CPC分类号: A61B6/487 , A61B6/12 , A61B6/5264 , G06T7/246 , G06T7/277 , G06T2207/10121 , G06T2207/30021
摘要: A method and system for autoregressive model based pigtail catheter motion prediction in a fluoroscopic image sequence is disclosed. Parameters of an autoregressive model are estimated based on observed pigtail catheter tip positions in a plurality of previous frames of a fluoroscopic image sequence. A pigtail catheter tip position in a current frame of the fluoroscopic image sequence is predicted using the fitted autoregressive model. The predicted pigtail catheter tip position can be used to constrain pigtail catheter tip detection in the current frame. The predicted pigtail catheter tip position may also be used to predict abnormal motion in the fluoroscopic image sequence.
摘要翻译: 公开了一种在透视图像序列中基于自回归模型的尾纤导管运动预测的方法和系统。 基于在透视图像序列的多个先前帧中的观察到的尾纤导管尖端位置来估计自回归模型的参数。 使用拟合的自回归模型预测荧光镜图像序列的当前帧中的尾纤导管尖端位置。 预测的猪尾导管尖端位置可用于限制当前帧中的尾纤导管尖端检测。 预测的猪尾导管尖端位置也可以用于预测荧光镜像图像序列中的异常运动。
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公开(公告)号:US09999399B2
公开(公告)日:2018-06-19
申请号:US13297373
申请日:2011-11-16
申请人: Yu Pang , Yefeng Zheng , Matthias John , Jan Boese , Dorin Comaniciu
发明人: Yu Pang , Yefeng Zheng , Matthias John , Jan Boese , Dorin Comaniciu
CPC分类号: A61B6/487 , A61B6/12 , A61B6/5264 , G06T7/246 , G06T7/277 , G06T2207/10121 , G06T2207/30021
摘要: A method and system for autoregressive model based pigtail catheter motion prediction in a fluoroscopic image sequence is disclosed. Parameters of an autoregressive model are estimated based on observed pigtail catheter tip positions in a plurality of previous frames of a fluoroscopic image sequence. A pigtail catheter tip position in a current frame of the fluoroscopic image sequence is predicted using the fitted autoregressive model. The predicted pigtail catheter tip position can be used to constrain pigtail catheter tip detection in the current frame. The predicted pigtail catheter tip position may also be used to predict abnormal motion in the fluoroscopic image sequence.
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公开(公告)号:US09582934B2
公开(公告)日:2017-02-28
申请号:US13235802
申请日:2011-09-19
申请人: Yefeng Zheng , Yu Pang , Rui Liao , Matthias John , Jan Boese , Shaohua Kevin Zhou , Dorin Comaniciu
发明人: Yefeng Zheng , Yu Pang , Rui Liao , Matthias John , Jan Boese , Shaohua Kevin Zhou , Dorin Comaniciu
摘要: A method and system for extracting a silhouette of a 3D mesh representing an anatomical structure is disclosed. The 3D mesh is projected to two dimensions. Silhouette candidate edges are generated in the projected mesh by pruning edges and mesh points based on topology analysis of the projected mesh. Each silhouette candidate edge that intersects with another edge in the projected mesh is split into two silhouette candidate edges. The silhouette is extracted using an edge following process on the silhouette candidate edges.
摘要翻译: 公开了一种用于提取表示解剖结构的3D网格的轮廓的方法和系统。 3D网格投影到两个维度。 通过基于投影网格的拓扑分析修剪边缘和网格点,在投影网格中生成剪影候选边缘。 与投影网格中的另一边缘相交的每个剪影候选边缘被分割成两个轮廓候选边缘。 使用轮廓候选边缘上的边缘跟随过程提取轮廓。
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4.
公开(公告)号:US20120069017A1
公开(公告)日:2012-03-22
申请号:US13235802
申请日:2011-09-19
申请人: Yefeng Zheng , Yu Pang , Rui Liao , Matthias John , Jan Boese , Shaohua Kevin Zhou , Dorin Comaniciu
发明人: Yefeng Zheng , Yu Pang , Rui Liao , Matthias John , Jan Boese , Shaohua Kevin Zhou , Dorin Comaniciu
IPC分类号: G06T17/00
摘要: A method and system for extracting a silhouette of a 3D mesh representing an anatomical structure is disclosed. The 3D mesh is projected to two dimensions. Silhouette candidate edges are generated in the projected mesh by pruning edges and mesh points based on topology analysis of the projected mesh. Each silhouette candidate edge that intersects with another edge in the projected mesh is split into two silhouette candidate edges. The silhouette is extracted using an edge following process on the silhouette candidate edges.
摘要翻译: 公开了一种用于提取表示解剖结构的3D网格的轮廓的方法和系统。 3D网格投影到两个维度。 通过基于投影网格的拓扑分析修剪边缘和网格点,在投影网格中生成剪影候选边缘。 与投影网格中的另一边缘相交的每个剪影候选边缘被分割成两个轮廓候选边缘。 使用轮廓候选边缘上的边缘跟随过程提取轮廓。
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