Device and method for reducing exposure time set for high dynamic range video / imaging

摘要

The disclosure proposes a method for obtaining a High Dynamic Range (HDR) image. The method comprises storing a main set of selectable exposure times and a plurality of candidate reduced sets being respective subsets of the main set, controlling a capture of calibration images at respectively each exposure time of the main set, for each candidate reduced set, selecting the calibration images captured with the exposure times of the candidate reduced set and computing a score value depending on intensities of the selected calibration images, selecting a candidate reduced set from the candidate reduced sets on the basis of the computed score values, and controlling the capture of the plurality of images at respectively each exposure time of the selected candidate reduced set for obtaining the HDR image.