Patent ID: 8624178

Claim:
A method of correcting sensitivity for a matrix image sensor, comprising the following steps: a signal X i (L) is established pixel by pixel that corresponds to the illumination of a pixel P i by a luminance L; a fixed reference K 0 is defined for this signal, the value K 0 being chosen such that, for a given luminance L 0 the pixels all supply a signal X i (L 0 ) substantially equal to K 0 ; and a corrected signal X* i (L) is established by applying to a signal X i ,(L)−K 0 referenced with respect to K 0 a multiplying correcting coefficient specific to the pixel concerned and by adding K 0 to the result of the multiplication, the correcting coefficient being determined from a signal X i (Lr) supplied by the pixel P i for a determined reference luminance Lr which is the same for all the pixels.