Invention Grant
US08111306B2 Apparatus, method and computer-readable medium for eliminating dark current components of an image pickup device 失效
用于消除图像拾取装置的暗电流分量的装置,方法和计算机可读介质

Apparatus, method and computer-readable medium for eliminating dark current components of an image pickup device
Abstract:
An image pickup apparatus includes an image pickup device including plural imaging planes each having different dark current characteristics, each of the imaging planes having an effective image area and an corresponding optical black (OPB) area. The image pickup apparatus also includes a memory that stores a dark current data table including difference data between dark current values pre-measured at upper and lower areas of the effective image area of each of the imaging planes and dark current values pre-measured at corresponding upper and lower areas of the OPB area. The image pickup apparatus further includes an image processing unit to calculate estimate dark current values for the effective image area based on the dark current data table and actual dark current values measured in the OPB area for each of the imaging planes, and eliminates the dark current components for the effective imaging areas.
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