公开(公告)号：US20140348440A1

公开(公告)日：2014-11-27

申请号：US14364715

申请日：2012-12-12

申请人： KONINKLIJKE PHILIPS N.V.

发明人： Frank Bergner ,  Bernhard Johannes Brendel ,  Thomas Koehler

IPC分类号： G06T5/00

CPC分类号： G06T5/00 ,  G06T11/006 ,  G06T2207/20004 ,  G06T2211/424

摘要： A processing component (122) processes images based on an iterative reconstruction algorithm with regularization and/or de-noising algorithm. The processing component includes a set point determiner (224) that determines a quality set point (216) between predetermined lower and upper quality bounds (226) based on a quality variable (228) indicative of an image quality of interest. The processing component further includes a comparator (214) that compares, each processing iteration, a quality metric of a current generated image with the quality set point and generates a difference value indicative of a difference between the quality metric and the quality set point. The processing component further includes a regularization factor updater (220) that generates an updated regularization factor for a next processing iteration based on a current value (222) of the regularization factor and at least the quality metric in response to the difference value indicating that the quality metric is outside of a predetermined range about the quality set point.

摘要翻译： 处理组件（122）基于具有正则化和/或去噪算法的迭代重建算法处理图像。 处理组件包括基于指示感兴趣的图像质量的质量变量（228）确定预定的下限和上限质量界限（226）之间的质量设定点（216）的设定点确定器（224）。 处理组件还包括比较器（214），每个处理迭代将当前产生的图像的质量度量与质量设置点进行比较，并产生指示质量度量和质量设定点之间的差的差值。 处理组件还包括正则化因子更新器（220），其基于正则化因子的当前值（222）生成用于下一个处理迭代的更新的正则化因子，并且至少响应于指示所述正则化因子的差值的质量度量 质量度量关于质量设定点超出预定范围。