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公开(公告)号：US07260254B2
公开(公告)日：2007-08-21
申请号：US10303225
申请日：2002-11-25
IPC分类号： G06K9/00
CPC分类号： G06T7/0012 , G06T2207/30068
摘要： Comparing first and second images taken on different imaging systems and under different exposure conditions is achieved by the steps of: applying a model to the data representing the first image, which model simulates at least one process step in the creation of said first image, to derive a representation of the first image at a level of processing common to the creation of the second image; and applying a further model to said representation, which model simulates at least one process step in the creation of said second image, to derive a further representation of the first image which corresponds to the same level of processing as said second image.
摘要翻译： 比较在不同成像系统和不同曝光条件下拍摄的第一和第二图像是通过以下步骤实现的：将模型应用于表示第一图像的数据，该模型模拟创建所述第一图像中的至少一个处理步骤， 在第二图像的创建共同的处理级别上导出第一图像的表示; 以及将另外的模型应用于所述表示，所述模型模拟所述第二图像的创建中的至少一个处理步骤，以导出对应于与所述第二图像相同的处理级别的第一图像的另外的表示。
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公开(公告)号：US07394924B2
公开(公告)日：2008-07-01
申请号：US10686382
申请日：2003-10-14
IPC分类号： G06K9/00 , G01N23/201
CPC分类号： A61B6/5282 , A61B6/06 , A61B6/502 , A61B6/508 , G06T5/003 , G06T5/20 , G06T2207/10116 , G06T2207/30068
摘要： A method of processing a radiographic image obtained with a slot-scanning radiographic system to compensate for scattering of the illuminating beam in the tissue being imaged. A conventional circularly symmetric scatter mask, for example a point spread function, is adjusted to take account of the shape of the detector and time delay integration used in the slot scanning system, the presence of an air gap between the detector and the bottom of the tissue being imaged, and the collimation of the radiation beam. The result is a sharpened and shortened point spread function.
摘要翻译： 一种处理通过时隙扫描放射线照相系统获得的放射照相图像以补偿被成像的组织中的照射光束的散射的方法。 调整传统的圆对称散射掩模，例如点扩散函数，以考虑到检测器的形状和在时隙扫描系统中使用的时间延迟积分，检测器与底部之间存在气隙 成像的组织和辐射束的准直。 结果是削尖和缩短点扩散功能。
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