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Intrinsic feature-based pose measurement for imaging motion compensation

机译:基于内在特征的姿态测量,用于成像运动补偿

摘要

Systems and methods for generating motion corrected tomographic images are provided. A method includes obtaining first images of a region of interest (ROI) to be imaged and associated with a first time, where the first images are associated with different positions and orientations with respect to the ROI. The method also includes defining an active region in the each of the first images and selecting intrinsic features in each of the first images based on the active region. Second, identifying a portion of the intrinsic features temporally and spatially matching intrinsic features in corresponding ones of second images of the ROI associated with a second time prior to the first time and computing three-dimensional (3D) coordinates for the portion of the intrinsic features. Finally, the method includes computing a relative pose for the first images based on the 3D coordinates.
机译:提供了用于生成运动校正的断层图像的系统和方法。一种方法包括获得要成像并与第一时间相关联的感兴趣区域(ROI)的第一图像,其中,第一图像与相对于ROI的不同位置和方向相关联。该方法还包括在每个第一图像中定义活动区域,并基于该活动区域在每个第一图像中选择固有特征。其次,在与第一时间之前的第二次相关联的ROI的第二张图像的对应图像中,在时间和空间上识别一部分固有特征,以在时间上和空间上匹配固有特征,并为该部分固有特征计算三维(3D)坐标。最终,该方法包括基于3D坐标计算第一图像的相对姿势。

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