公开(公告)号：US20110210262A1

公开(公告)日：2011-09-01

申请号：US12692448

申请日：2010-01-22

申请人： David Prendergast ,  Michael Anderson ,  Paul Downes ,  William Croydon ,  Christopher Boyce ,  Wayne Cranwell ,  Trevor McAlister ,  Zhuo Zhang

发明人： David Prendergast ,  Michael Anderson ,  Paul Downes ,  William Croydon ,  Christopher Boyce ,  Wayne Cranwell ,  Trevor McAlister ,  Zhuo Zhang

IPC分类号： G01T1/16

CPC分类号： G01K17/00 ,  G01T1/24 ,  G01T1/246 ,  G01T1/247

摘要： An apparatus for spatially correcting an image frame is disclosed. In some embodiments, the apparatus stores a frame of pixel values and scans a multi-pixel correction window across the frame. Spatial correction is performed on pixels within the window at correction positions during the scan. The spatial correction comprises estimating pixel values at value estimation positions based on one or more pixel values within the window for pixels satisfying a logical condition. The value estimation positions correspond to pixel values which do not fall within the window again during the scan. Further disclosed is an apparatus for detecting high-energy radiation, in which integration circuitry is used for integrating charge responsive to radiation photon interaction events. The circuits are controllable in accordance with an exposure control signal to vary an exposure window duration according to an operating parameter of the apparatus.

摘要翻译： 公开了一种用于空间校正图像帧的装置。 在一些实施例中，该装置存储一帧像素值，并跨越该帧扫描多像素校正窗口。 在扫描期间的校正位置处对窗口内的像素执行空间校正。 空间校正包括基于满足逻辑条件的像素在窗口内的一个或多个像素值来估计值估计位置处的像素值。 值估计位置对应于在扫描期间不再落入窗口内的像素值。 进一步公开的是一种用于检测高能辐射的装置，其中集成电路用于响应于辐射光子相互作用事件积分电荷。 电路根据曝光控制信号是可控的，以根据装置的操作参数改变曝光窗持续时间。

公开(公告)号：US20050199793A1

公开(公告)日：2005-09-15

申请号：US10512256

申请日：2003-04-23

申请人： William Croydon

发明人： William Croydon

IPC分类号： G01T1/185 ,  G01D18/00

CPC分类号： G01T1/185

摘要： A radiation detector, comprising a sensitive volume filled with a counter gas; an anode and a cathode each in communication with the counter gas; a voltage supply for maintaining a potential difference between the anode and the cathode, said potential difference being less than required to cause gas discharge in the counter gas. The radiation detector further comprises a photoemissive material in communication with the sensitive volume. The photoemissive material may be provided as a coating on the cathode. The radiation detector may further comprise a controllable light source for supplying photons of a known wavelength to the photoemissive material. Electrons may be emitted by the photoemissive material in response to the provision of said photons, said electrons causing avalanche breakdown of the counter gas, indicating satisfactory operation of the radiation detector.

摘要翻译： 一种辐射检测器，包括填充有反气体的敏感体积; 每个与对流气体连通的阳极和阴极; 用于维持阳极和阴极之间的电位差的电压源，所述电位差小于在反气体中引起气体放电所需的电位差。 辐射检测器还包括与敏感体积连通的光发射材料。 光发射材料可以作为阴极上的涂层提供。 放射线检测器还可以包括用于将已知波长的光子提供给光发射材料的可控光源。 响应于所述光子的提供，电子可以由光发射材料发射，所述电子引起对流气体的雪崩击穿，表明辐射探测器的令人满意的操作。