Simulating High Dynamic Range Imaging with Virtual Long-Exposure Images

摘要

A total exposure time (TET) may be selected. A plurality of images of a scene may be captured using respective TETs that are based on the selected TET. At least two of the images in the plurality of images may be combined to form a merged short-exposure image. A digital gain may be applied to the merged short-exposure image to form a virtual long-exposure image. The merged short-exposure image and the virtual long-exposure image may be combined to form an output image. More of the output image may be properly-exposed than either of the merged short-exposure image or the virtual long-exposure image.

主权项

1. A method comprising:
selecting a total exposure time (TET); capturing, by an image capture device, a plurality of images of a scene, wherein the images in the plurality of images are captured using respective TETs that are based on the selected TET; combining at least two of the images in the plurality of images to form a merged short-exposure image; and applying a digital gain to at least some pixels of the merged short-exposure image to form an output image.