Method and apparatus for suppressing noise in image sensor devices

摘要

An image pickup apparatus (100) includes detecting means (101) in which a matrix of pixels (201) converts radiation or light into analog electrical signals, a reading circuit (103) configured to perform signal processing operation by reading the analog electric signals on a row-by-row basis, an A/D converter (104) configured to convert a pixel signal output from the reading circuit into pixel data, and correction processing means (400, 700) configured to correct the pixel data. A controlling means performs control processing so that the reading circuit outputs reset signals to the A/D converter in a period in which the signal processing operation of a predetermined row is performed, the A/D converter converts the reset signals into pieces of reset data in the period, and the correction processing means averages the pieces of reset data and performs subtraction with the averaged reset data and the pixel data output from the A/D converter.