scene-adaptive automatic exposure compensation imager

摘要

patent summary: "Scene-adaptive automatic exposure compensation imaging apparatus". The present invention relates to a method that adjusts an auto exposure target in an auto exposure operation in an image sequence, such as an infrared image sequence. The method comprises: obtaining a histogram of at least one of the images; apply a weighted histogram table to the histogram to obtain weighted histogram boxes, with at least some boxes in the histogram containing saturated pixels being assigned a higher weighting value, and at least some boxes in the histogram containing unsaturated pixels. a lower weighting value, and sum the weighted histogram boxes to obtain a saturation point and decrease an auto exposure target for an auto exposure operation when the saturation point exceeds a first threshold value, and increase the auto exposure target when the saturation point is below the first threshold value and the image is underexposed.