公开(公告)号：US4808826A

公开(公告)日：1989-02-28

申请号：US849324

申请日：1986-04-08

申请人： Chun B. Lim ,  Richard Chaney ,  Felix Jih ,  Tim Johnson ,  Steven E. King

发明人： Chun B. Lim ,  Richard Chaney ,  Felix Jih ,  Tim Johnson ,  Steven E. King

IPC分类号： G01T1/164 ,  G01T1/20 ,  G06F15/42

CPC分类号： G01T1/1647 ,  G01T1/1642

摘要： In scintillation cameras, spatial or linearity correction is accomplished utilizing a weighted average of correction vectors in the region of the apparent location of scintillation events. Such vectors are developed in a calibration step using a pinhole or slot apertured mask. On the fly, vectors beyond those next adjacent the apparent location are used for correction, which are constrained to exhibit continuity in both the functional value, and at a minimum the first derivative, but which may include continuity in higher order derivatives also. One such correction function, which insures continuity in both the functional value and its first derivative, is called a Hermite interpolation function.

摘要翻译： 在闪烁照相机中，利用在闪烁事件的明显位置的区域中的校正矢量的加权平均来完成空间或线性校正。 这样的载体在使用针孔或槽孔掩模的校准步骤中显影。 在飞行中，超出邻近表观位置的矢量的矢量被用于校正，其被限制为在功能值和至少一阶导数上表现出连续性，但是也可以包括高阶导数的连续性。 确保功能值及其一阶导数的连续性的一个这样的校正函数被称为Hermite插值函数。