Patent ID: 7330603

Claim:
A method of processing an image in an image sensor, comprising the steps of: dividing the sensor into at least a first zone and a second zone separated by a border, each zone associated with a respective processing pathway, with a view to eliminate the defects due to differences between these pathways, in which the first zone is regarded as reference zone and the associated processing pathway is regarded as reference pathway, and the other pathway is regarded as a pathway to be corrected; using a correction table in the pathway to be corrected, said correction table having an input for receiving a signal level and an output for providing a respective corrected signal level for each value of signal level received on the input; modifying iteratively the correction table, during each new use of the sensor by measuring signal levels arising from the processing pathways for a group of border points around the border between the two zones; determining an abnormal divergence between the measurements on either side of the border, this divergence being the consequence of an inappropriate correction of one particular signal level value by the table; storing new values in the correction table for the one particular signal level value and for several other signal level values of the correction table around the one particular signal level for which the correction is inappropriate; and repeating the measuring, determining and storing steps for other groups of border points.