1. One or more computer-readable memory or storage devices storing instructions that, when executed by a computing device, perform a method of generating a high dynamic range digital image, the method comprising: performing motion analysis relative to a reference image in a set of plural digital images depicting a scene, the motion analysis comprising determining image differences, relative to the reference image for respective non-reference images in a plurality of non-reference images in the set; based at least in part on the motion analysis, deriving one or more relative exposure levels relative to the reference image for the respective non-reference images; and based at least in part on the one or more relative exposure levels, integrating the set of plural digital images to form a higher dynamic range digital image depicting the scene.