Patent ID: 8780246
Filing Date: 2014-07-15
Classification: H04N

Abstract:
1. A method for correcting an image obtained by a photosensitive device comprising photosensitive points organized as a matrix of Nl rows by Nc columns, each photosensitive point configured to accumulate charges during exposure to luminous radiation, the method comprising: reading, row-by-row, at instants t=2n and t=2n+1 of signals representative of the charges accumulated at each n photosensitive point, where n being an integer lying between 0 and N−1, where N is an integer lying between 2 and the number Nl of rows of the matrix, the signals of one and the same row being read simultaneously, a determined duration T determining, for each discrete signal OF(n) corresponding to a column of the matrix, a signal OFX(n) representing the charges accumulated at the photosensitive points readable at the instants t=2n in the absence of exposure to radiation, the signals OFX(n) being determined by correcting the discrete signals OF(n); and subtracting, for each column of the matrix, the signal OFX(n) from the corresponding signal X