A method for correcting an image obtained by a photosensitive device (1, 1', 1") comprising photosensitive points (P 1 to P 9) organised in a matrix (2, 2', 2") of NI rows (L 1 to L 3) by Nc columns (Cl 1 to Cl 3), each photosensitive point (P 1 to P 9) being able to accumulate charges during exposure to luminous radiation, the method being characterised in that it comprises: - a first step (E 2) of row by row reading at first and second successive reading instants separated by a determined duration T sampling of signals representative of charges accumulated at each photosensitive point (P 1 to P 9), the signals of one and the same row (L 1 to L 3) being read simultaneously, the signals read at the first instants, called useful signals, representing the charges accumulated at the various photosensitive points (P 1 to P 9) subsequent to exposure of these points (P 1 to P 9) to useful luminous radiation, the signals read at the second instants, called offset signals, representing the charges accumulated at the various photosensitive points (P 1 to P 9) in the absence of exposure to radiation, for each column (Cl 1 to Cl 3) of the matrix (2, 2', 2"), the useful signals forming a discrete signal X real (n) and the offset signals forming a discrete signal OF(n), with n being an integer between 0 and N-1, where N is an integer between 2 and the number NI of rows (L 1 to L 3) of the matrix (2, 2', 2") - a second step (E 3) of determining, for each signal OF(n) formed by the offset signals at the second instants in the absence of exposure to radiation corresponding to a column (Cl 1 to Cl 3) of the matrix (2, 2',2"), a signal OFX(n) by correcting the signals OF(n) on the basis of the discrete signal X real (n) and the signals OF(n) such as to obtain the signal OFX(n) which would have been formed by the offset signals if they had been read in the first instants in the absence of exposure of the matrix (2, 2', 2") to luminous radiation, - a third step (E 4) of subtracting, for each column (Cl 1 to Cl 3) of the matrix (2, 2', 2"), the signal OFX(n) from the corresponding signal X real (n). - a first step (E 2) of row by row reading at first and second successive reading instants separated by a determined duration T sampling of signals representative of charges accumulated at each photosensitive point (P 1 to P 9), the signals of one and the same row (L 1 to L 3) being read simultaneously, the signals read at the first instants, called useful signals, representing the charges accumulated at the various photosensitive points (P 1 to P 9) subsequent to exposure of these points (P 1 to P 9) to useful luminous radiation, the signals read at the second instants, called offset signals, representing the charges accumulated at the various photosensitive points (P 1 to P 9) in the absence of exposure to radiation, for each column (Cl 1 to Cl 3) of the matrix (2, 2', 2"), the useful signals forming a discrete signal X real (n) and the offset signals forming a discrete signal OF(n), with n being an integer between 0 and N-1, where N is an integer between 2 and the number NI of rows (L 1 to L 3) of the matrix (2, 2', 2") - a second step (E 3) of determining, for each signal OF(n) formed by the offset signals at the second instants in the absence of exposure to radiation corresponding to a column (Cl 1 to Cl 3) of the matrix (2, 2',2"), a signal OFX(n) by correcting the signals OF(n) on the basis of the discrete signal X real (n) and the signals OF(n) such as to obtain the signal OFX(n) which would have been formed by the offset signals if they had been read in the first instants in the absence of exposure of the matrix (2, 2', 2") to luminous radiation, - a third step (E 4) of subtracting, for each column (Cl 1 to Cl 3) of the matrix (2, 2', 2"), the signal OFX(n) from the corresponding signal X real (n).