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1. 发明申请

WO2011031134A1 IMAGE PROCESSING METHOD AND SYSTEM 审中-公开
标题翻译：图像处理方法和系统
公开(公告)号：WO2011031134A1
公开(公告)日：2011-03-17
申请号：PCT/NL2009/050549
申请日：2009-09-14
申请人： ERASMUS UNIVERSITY MEDICAL CENTER ROTTERDAM , NIESSEN, Wiro Joep , METZ, Cornelis Timotheüs , VAN WALSUM, Theodores , SCHAAP, Michiel
发明人： NIESSEN, Wiro Joep , METZ, Cornelis Timotheüs , VAN WALSUM, Theodores , SCHAAP, Michiel
IPC分类号： G06T7/00 , G06T3/00
CPC分类号： G06T3/0068 , G06T7/344 , G06T7/38 , G06T2207/10076 , G06T2207/10081 , G06T2207/10116 , G06T2207/10124 , G06T2207/30048 , G06T2207/30101
摘要： Registration of two dimensional images with a time dependent three dimensional model of a moving object such as the heart is performed using two transformations. A first transformation, which may involve deformation, maps a three dimensional model of the object for one time point, such as the end- systolic heart phase, to mapped models that match 3D scans of the object for different time points. The first transformation is determined by matching 3D scans with mapped 3D models, typically using large scale structures of the object. Afterwards a stream of 2D images, such as X-ray images of the object, is captured for a series of time points. From this stream, second transformations are determined that map the mapped 3D models to the 2D images. The parameters of the second transformation for an individual time point are determined dependent on the 2D images for a plurality of the time points, to ensure that these parameters map the mapped 3D models for plurality of time points to registered 3D models that define derived 2D image data that match the combination of 2D images for the plurality of time points. Thus, instead of using a single spatial transformation to register the 3D models with a 2D image, registration is performed using a reference 3D model and a combination of a first and second spatial transformation.
摘要翻译：使用两个变换来执行诸如心脏的移动物体的时间依赖三维模型的二维图像的注册。可能涉及变形的第一个变换将对象的三维模型（例如收缩末期心脏相位）映射到与不同时间点的对象的3D扫描匹配的映射模型。通过将3D扫描与映射的3D模型进行匹配来确定第一个变换，通常使用对象的大规模结构。之后，一系列时间点捕获2D图像流，例如对象的X射线图像。从该流中，确定将映射的3D模型映射到2D图像的第二变换。根据多个时间点的2D图像确定各个时间点的第二变换的参数，以确保这些参数将多个时间点的映射3D模型映射到定义导出的2D图像的注册3D模型与多个时间点的2D图像的组合相匹配的数据。因此，不是使用单个空间变换来使用2D图像来注册3D模型，而是使用参考3D模型和第一和第二空间变换的组合来执行注册。

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