US Patent 9955084 HDR video camera

According to some embodiments, a camera captures a plurality of images of substantially the same scene at different exposure levels for each video frame to be captured. These images are then merged or fused and processed using a spatially, and optionally also temporally, varying tonemapping operator, and the resulting image after some further finishing is written into a video stream. In some embodiments, this processing is performed in real time on a graphics processing unit present in the device containing the camera.