IMAGE PICKUP DEVICE, SIGNAL PROCESSING DEVICE AND SIGNAL PROCESSING METHOD

摘要

An imaging device for reducing fixed pattern noise caused by dark current or the like. The imaging device (10) includes a solid state imaging device (11) and a signal processor (12). The solid state imaging device (11) includes a plurality of image cells (Ca) and generates a pixel signal having a logarithmic characteristic that is in accordance with the amount of incident light entering each image cell (Ca). The signal processor (12) includes a correction data table (33) that stores first correction data for correcting the pixel signal and a dark current error data table (34) that stores second correction data for correcting the pixel signal in a low illuminance range. The signal processor (12) has an offset correction computation circuit (31) for correcting the pixel signal based on the first correction data and generating first pixel data. Further, second correction data of the dark current error data table (34) corresponding to the first pixel data is read when necessary. Generation of the first correction data with the second correction data and generation of second pixel data correct variations caused by dark current or the like to an average value.