Patent ID: 8508656

Claim:
A method for controlling a dynamic image sensor comprising photodiode cells, each providing an information representative of a brightness level, comprising for each image the steps of: defining ranges of brightness levels; defining several successive time intervals of exposure of the cells for the next image, the cells being reset at the beginning of each interval, said intervals being calculated from the brightness levels of a present image and from the desired brightness level distribution for the next image; and adapting the time intervals of exposure as a function of a homogeneous distribution of the number of cells in the ranges of brightness levels, wherein the time intervals T (i) between resets for the next image are calculated by the following formula: T ( i ) = PvalN + 1 ( i ) - PvalN + 1 ( i - 1 ) Sen · ( LvalN + 1 ( i ) - LvalN + 1 ( i - 1 ) ) , where PvalN+1 (i) designates the upper threshold of interval i for the next image, PvalN+1 (i-1) designates the upper threshold of interval i−1 for the next image, LvalN+1 (i) designates the brightness value of interval i for the next image, LvalN+1 (i-1) designates the brightness value of interval i−1 for the next image, and Sen designates the sensitivity of a cell.