公开(公告)号：US06744912B2

公开(公告)日：2004-06-01

申请号：US10167092

申请日：2002-06-10

申请人： Richard E. Colbeth ,  John M. Pavkovich ,  Edward J. Seppi ,  Edward G. Shapiro

发明人： Richard E. Colbeth ,  John M. Pavkovich ,  Edward J. Seppi ,  Edward G. Shapiro

IPC分类号： G06T500

CPC分类号： H04N5/367 ,  H04N5/32 ,  H04N5/335 ,  H04N5/347

摘要： A multiple mode digital X-ray imaging system providing for preprocessing “binning” of analog pixel signals from a detector array by selectively summing, within the detector array, adjacent pixel charges on a row-by-row basis and selectively summing, within detector array readout circuits, the previously summed pixel charges (by rows) on a column-by-column basis. An array, or mapping, of “defective pixel” flags is used to identify defective pixels within the detector array, with such flags being added to, or inserted into, the incoming data stream for dynamic processing along with the incoming pixel data. A buffer and filter is used to perform still image capture during the radiographic mode of operation and to recursively filter incoming data frames during the fluoroscopic mode of operation by summing a scaled amount of pixel data from prior data frames with a scaled amount of incoming pixel data from the present data frame.

摘要翻译： 一种多模式数字X射线成像系统，其通过在检测器阵列内以逐行为基础选择性地相加相邻像素电荷并在检测器阵列内进行选择性求和，来提供从检测器阵列“模拟”模拟像素信号 读出电路，先前相加的像素电荷（按行）逐列。 使用“缺陷像素”标志的阵列或映射来识别检测器阵列内的有缺陷的像素，其中这些标记被附加到输入数据流中或插入到输入数据流中，以便与输入像素数据一起进行动态处理。 使用缓冲器和滤波器在放射线照相操作模式下执行静态图像捕获，并且在荧光镜操作模式期间递归滤波输入数据帧，通过将来自先前数据帧的像素数据的缩放量与输入像素数据的标度量相加 从当前的数据帧。

公开(公告)号：US5970115A

公开(公告)日：1999-10-19

申请号：US978177

申请日：1997-11-25

申请人： Richard E. Colbeth ,  John M. Pavkovich ,  Edward J. Seppi ,  Edward G. Shapiro

发明人： Richard E. Colbeth ,  John M. Pavkovich ,  Edward J. Seppi ,  Edward G. Shapiro

IPC分类号： H04N5/217 ,  H04N5/32 ,  H04N5/347 ,  H04N5/367 ,  G01N23/04

CPC分类号： H04N5/347 ,  H04N5/32 ,  H04N5/367

摘要： A multiple mode digital X-ray imaging system providing for preprocessing "binning" of analog pixel signals from a detector array by selectively summing, within the detector array, adjacent pixel charges on a row-by-row basis and selectively summing, within detector array readout circuits, the previously summed pixel charges (by rows) on a column-by-column basis. An array, or mapping, of "defective pixel" flags is used to identify defective pixels within the detector array, with such flags being added to, or inserted into, the incoming data stream for dynamic processing along with the incoming pixel data. A buffer and filter is used to perform still image capture during the radiographic mode of operation and to recursively filter incoming data frames during the fluoroscopic mode of operation by summing a scaled amount of pixel data from prior data frames with a scaled amount of incoming pixel data from the present data frame.