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

摘要

The present invention provides a method for controlling the capture of multiple images to acquire high dynamic range, HDR, and images. The method stores a main set of selectable exposure times and a reduced set of candidates that are a subset of each of the main sets, and captures calibration images at each exposure time of the main set, respectively. And, for each reduced set of candidates, selecting a calibration image captured at the exposure time of the candidate reduced set and calculating a score value according to the intensity of the selected calibration image Selecting a reduced set of candidates from among a plurality of candidate reduced sets based on the calculated score values of all candidate reduced sets and selected to obtain an HDR image Controlling the capture of a plurality of images at each exposure time of the reduced set of candidates.