1. A method of processing an image arising from a sensor (CPT) divided into at least two zones (ZD, ZG) associated with different processing pathways, with a view to eliminating the defects due to the differences between these pathways, in which one zone (ZD) is regarded as reference zone and the associated processing pathway is regarded as reference pathway, and another pathway (ZG), the so-called pathway to be corrected, comprises a correction table (TC) matching each signal level (b i ) on input to the table, with a corrected level (b′ i ) on output from the table, characterized in that the correction table is modified iteratively, during each new use of the sensor, according to the following steps: measurement of signal levels (a2, a1, b′1) arising from the processing pathways for a group of border points (A 1, A 2, B 1 ) around the border between the two zones, determination of an abnormal divergence (E) between the measurements (a2, a1, b′1) on either side of the border, this divergence being the consequence of an inappropriate correction of a level (b1) on input to the table, memory storage of new values in the correction table for a series of input levels (b i ) of the correction table around the level (b1) for which the correction is inappropriate, and repetition of these steps for other groups of border points.