The invention relates to a method for generating a video stream comprising a set of high dynamic range images, called HDR video stream, from a plurality of standard dynamic range images that are obtained by reading at least two image sensors each having an image production rate, each sensor comprising a plurality of pixels arranged in a matrix, and each associated with a photoelectric conversion element for converting received light into electric charge and accumulating said electric charge over a light exposure time, said method comprising a plurality of iterations of creating high dynamic range images comprising determining exposure times, reading optical sensors and combining the data from these sensors in an iterative operating mode involving temporary memory area management.