1. A method of correcting for noise otherwise included in an image acquired by a flat-panel-detector having a matrix-type detector panel including a plurality of lines, each for providing a plurality of signals, and a plurality of read out amplifiers for reading out line-by-line the signals acquired by the matrix-type detector panel, the matrix-type detector panel including a dark reference zone and an active area, the method comprising: receiving the plurality of signals from the read out amplifiers; determining, via the signals, a plurality of dark noise contributions in the dark reference zone, each noise contribution related to one or more pixels in the dark reference zone on one or more of the lines of the matrix-type detector panel; and when determined values of dark noise contributions from pixels in the first line do not exceed a pre-defined threshold noise value calculating, in accord with a first procedure, correcting parameters for a first line of the matrix-type detector panel, and when determined values of dark noise contributions from pixels in the first line exceed the pre-defined threshold noise value, calculating, in accord with a second procedure different from the first procedure, correcting parameters for the first line of the matrix-type detector panel; and correcting the image on the flat-panel-detector based on the correcting parameters, wherein the threshold noise value is based on a deviation from a mean noise signal value calculated from the plurality of noise contributions, the first procedure takes into consideration determined values of dark noise contributions from pixels in the first line which do not exceed the pre-defined threshold noise value, and the second procedure does not take into consideration values of dark noise contributions from pixels in the first line which do exceed the pre-defined threshold noise value, wherein the dark reference zone does not include a photoconductor layer and the active area includes a photoconductor layer.