APPARATUS AND METHOD FOR OPERATING A PIXELATED HIGH-ENERGY RADIATION DETECTOR

摘要

Apparatus for spatially correcting an image frame comprising an array of pixel values is disclosed. The apparatus is configured to store a frame of pixel values and scan a multi -pixel correction window across the frame of pixel values. Spatial correction is carried out on pixels values within the correction window at correction positions during said scan. The spatial correction comprises estimating a pixel value at a value estimation position within the window at a correction position based on one or more pixels values within the window for pixel values within the window satisfying a logical condition. The value estimation position corresponds to a pixel value in said frame which will not fall within said window again during said scan of said frame. Further disclosed is apparatus for detecting high-energy radiation, in which charge read-out circuits including charge integration circuitry for integrating charge responsive to a radiation photon interaction event in a high-energy radiation detector are automatically controllable in accordance with an exposure control signal to vary an exposure window duration dependent on an operating parameter of said apparatus.